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Carrier TRANSICOLD Vector 8700 Operation And Service Manual

Trailer and rail refrigeration units
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Operation and Service Manual
Vector 8700
TM
Trailer and Rail Refrigeration Units
62-12259 Rev F

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Summary of Contents for Carrier TRANSICOLD Vector 8700

  • Page 1 Operation and Service Manual Vector 8700 Trailer and Rail Refrigeration Units 62-12259 Rev F...
  • Page 3 Operation and Service Manual Vector 8700 Trailer and Rail Refrigeration Units © Carrier Corporation, 2024 Printed in U. S. A. November 2024...
  • Page 4 Manual Revision History for 62-12259 Rev. Date Reason for Release 7/25/2023 Initial Release 1/5/2024 Added Notice to Section 7 to reference 62-12258 for engine P codes. Section 8.5.12.2, step #9 – corrected additive part # 46-00074-00 4/2/2024 6/13/2024 Section 8.5.2 - Replaced section with updated instructions for priming the fuel pump.
  • Page 5 TABLE OF CONTENTS PARAGRAPH NUMBER Page 1. SAFETY PRECAUTIONS ............. 1–1 SAFETY PRECAUTIONS .
  • Page 6 2.10 ELECTRICAL DATA ............2–20 2.11 COMPONENT RESISTANCE AND CURRENT DRAW .
  • Page 7 4.5.1 Start-Stop Configuration ........... 4–5 4.5.2 Stop Parameters...
  • Page 8 5.5.5 Functional Parameters Via Display Mounted Keys ....... 5–20 5.5.6 Data Recorder via TRU-Tech .
  • Page 9 8.8.7 Compressor Suction Modulation Valve (CSMV) ....... . 8–39 8.8.8 Expansion Valves, EVXV and ECXV .
  • Page 10 10. WIRING ................10–1 10.1 HARNESS CONNECTOR WIRING .
  • Page 11 Follow safe work practices and utilize the appropriate protective equipment at all times. Your Carrier Transicold refrigeration unit has been designed with the safety of the operator in mind. During normal operation, all moving parts are fully enclosed to help prevent injury. During all pre-trip inspections, daily inspec- tions, and problem troubleshooting, you may be exposed to moving parts.
  • Page 12 Standby Electric Power Figure 1.1 Lockout/Tagout Be aware of HIGH VOLTAGE supplied at the power plug. Even with the unit off, power is present from the plug to the inside of the control box. Disconnect the high voltage source when performing service or main- tenance procedures and lockout/tagout the receptacle in accordance with your company procedures.
  • Page 13 The following statements are specifically applicable to this refrigeration unit and appear elsewhere in this manual. These recommended precautions must be understood and applied during operation and maintenance of the equip- ment covered herein. • Unit may start automatically at any time even if the switch is in the OFF position. Use proper lockout/ tagout procedures before inspection/servicing.
  • Page 14 • Under no circumstances should anyone attempt to repair the Logic or Display boards. Should a problem develop with these components, contact your nearest Carrier Transicold dealer for replacement. • Electronic modules MUST be handled with care to prevent accidental damage or degradation from elec- trostatic discharge (ESD), contamination or abuse.
  • Page 15 • Unit uses R-452A refrigerant and POE oil. The use of inert gas brazing procedures is mandatory for all Carrier Transicold refrigeration units; otherwise compressor failure will occur. For more information Refer to Technical Procedure 98-50553-00 Inert Gas Brazing. •...
  • Page 16 Safety Decals 62-12259 1–6...
  • Page 17 1–7 62-12259...
  • Page 18 62-12259 1–8...
  • Page 19 The unit may be equipped with an optional remote light bar which mounts separately on the front outside corner of the refrigerated compartment. Temperature control is provided by the Carrier Transicold APX control system (Refer to Section 2.5).
  • Page 20 The unit is described as having three major sections: • The condensing section (Figure 2.1 Figure 2.2), which includes the engine generator drive package • The evaporator section (Figure 2.3) • The control system (Figure 2.2) Table 2–1 Model Chart Engine Speed Model Refrigerant...
  • Page 21 Figure 2.1 Front View - Refrigeration System Components 10, 11, 12 5, 6, 7 1. Condenser Fans and Motors 13. Compressor Suc on Temperature Sensor (CST) 2. Ambient Air Temperature Sensor (AAT) 14. Economizer Outlet Temperature Sensor (ECOT) 3. Condenser Coil 15.
  • Page 22 Figure 2.2 Front View - Engine, Control System and AutoFresh Components 30, 31 20 19 17 16 15 1. Coolant Bo le 17. Engine Oil Fill and Dips ck 2. Fuel Filter/Heater (FH)/Water Sensor (ENWFS) 18. Exhuast 3. Diesel Oxida on Catalyst (DOC) 19.
  • Page 23 Figure 2.3 Evaporator Section - Grille Removed 2, 9 1. Evaporator Coil 11. High Pressure Air Switch Fi ng 2. Evaporator High Temperature Switch* (EVHTS) 12. Drain Pan Heater (HTR1) 3. Supply Air Temperature Sensor (1SAT) 13. Defrost Heaters (HTR1 and 2) 4.
  • Page 24 Figure 2.4 Control and Standby Boxes 1. General Contactor (GENCON) 2. Standby Contactor 1 (PSCON1) 3. Standby Contactor 2 (PSCON2) 4. Overload Ground Fault (OGF) 5. Phase Reversal Module (PRM) 11. Heater Contactor 2 (HTCON2) 6. F33, F34, F35 Battery Charger 12.
  • Page 25 Section 8.5.8). The system may be fitted with an intake air temperature sensor (IAT) and a manifold absolute pressure transducer (MAP). These sensors are installed when Carrier Transicold factory monitoring of the air system is required. 2.3.3 After Treatment System 2.3.3.1 Diesel Oxidation Catalyst System...
  • Page 26 2.3.4.5 Engine Oil Pressure Switch (ENOPS) The ENOPS is normally open and closes on pressure rise to the signal to the APX Control System when the engine has sufficient oil pressure for operation. There is a 15-second delay after the engine starts to allow the oil pressure to build up before the APX Control System looks at the input from this switch.
  • Page 27 2.3.9 Condenser Coil The condenser coil is a microchannel type and acts as a heat exchanger in which the compressed refrigerant gas is lowered in temperature and condensed into a liquid. A portion of the condenser coil is occupied by the subcooler, which removes heat from the refrigerant liquid leaving the receiver.
  • Page 28 Evaporator Section The evaporator (Figure 2.3) fits into a rectangular opening in the upper portion of the front wall of the refrigerated compartment. When the unit is installed, the evaporator section is located inside the compartment, and the con- densing section is outside. The evaporator assembly consists of an evaporator coil, evaporator fan, evaporator expansion valve, evaporator outlet pressure transducer, evaporator outlet temperature sensor, defrost termination temperature sensor, supply temperature sensor and return air temperature sensor.
  • Page 29 System Operating Controls and Components Temperature control is provided by the Carrier Transicold APX™ Control System. Once the system is set at the desired temperature, the unit will operate automatically to maintain the desired temperature within very close limits. 2.5.1 Multiple Languages Messages in the MessageCenter can be displayed in several different languages.
  • Page 30 Figure 2.5 Power Module 1. Battery Negative 2. Battery Positive 3. F1 80 amp - Main Fuse 4. F2 30 amp - Power Enable Relay Fuse 5. Diesel / Electric Relay (Only used for Fuel Heat Option) 6. Power Enable Relay 7.
  • Page 31 2.5.4.2 Microprocessor / Stepper Module (MSM) The Microprocessor/Stepper Module (MSM) houses the main microprocessor and the operating processor for the CCMV, EVXV and ECXV. The module is totally self-contained and does not contain any serviceable components. 2.5.4.3 Micro / Stepper Status LED Microprocessor activity within the Microprocessor / Stepper module or Power Module (PM) can be deter- mined by observing the status LEDs, located just to the right of the module bar code on the MSM or inside the PM.
  • Page 32 2.5.4.8 Overload Ground Fault Module (OGF) Figure 2.6 OGF Module The OGF, see Figure 2.6, is located in the control box (Figure 2.4). The module has two electrical safety fea- tures which are active in both Engine and Electric Oper- ation - Overload protection and Ground Fault (Leakage) .In each case, the 00100 Overload / Ground Fault...
  • Page 33 Figure 2.7 Display Module START/STOP DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT STATUS OK 1. Display Screen 2. MENU key 3. DEFROST key 4. START/STOP - CONTINUOUS Key 5. Alarm LED 6. Alarm Key 7. Arrow Keys 8. “=” (Select) Key 9.
  • Page 34 2.5.4.10 Display Module Keys • ALARM: The ALARM key allows viewing of the alarms stored in the system. • UP ARROW and DOWN ARROW: These keys allow scrolling through the selections presented. • EQUAL (ENTER): The EQUAL key is used to confirm a selection and lock it into memory. •...
  • Page 35 2.6.2 Remote Switch(es) The unit is provisioned to connect remote switches (DS/REMS1/REMS2) directly to the control system through the REM connector located in the evaporator section. • Two types of switches may be used: 1. A switch with contacts that are open when the switch is activated. 2.
  • Page 36 2.6.3 Remote Temperature Sensor The unit is provisioned to connect remote temperature sensors (REMSN1, REMSN2 and REMSN3) through the REM connector located in the evaporator section. The system may be configured to display the sensor reading in the Unit Data and to record the sensor reading in the data recorder.
  • Page 37 Engine Data Unit Specification Engine Model V2403-CR-E4 (26-00159-01) Rated Power 24.4 hp (18.2 KW) @1800 rpm Displacement 148.5 in3 (2434 cm3) No. Cylinders NOTE Refer to Table 2–1 for engine speed settings Coolant Capacity 1.66 U.S. gallons (5.86 liters) - 50/50 mix - never to exceed 60/40. Recommended to use Extended Life Coolant, Nitrite Free (ELC- NF), which is red in color and labeled for at least five years, 12,000 hours service life.
  • Page 38 Refrigeration System Data Unit Specification Defrost Air Switch (DAS) Initiates Defrost: 1.40 +/- .07 inch (35 +/- 1.8 mm) Defrost Timer 1.5h, 3h, 6h, or 12 hours Evaporator High Temperature Opens, on a temperature rise, at 130 +/- 5°F (55 +/- 2.8°C) Switch Closes, on a temperature fall, at 100 +/- 7°F (37.8 +/- 3.9°C) Liquid Injection Valve (LIV)
  • Page 39 Unit Specification Detail Nominal voltage and frequen- 460 vac, 60 hz, 3 phase cy at High Speed Nominal voltage and frequen- 345 vac 45 hz, 3 phase cy at Low Speed Generator Resistance 0.235 to 0.27 ohms phase to ground 0.47 to 0.54 phase to phase *Precision meter required for testing Output...
  • Page 40 2.12 Safety Devices The system is protected from high pressure conditions which may occur when exposed to very high temperatures (such as a fire) by a fusible plug mounted in the receiver. Under very high temperature conditions (refer to Section 2.9) the plug will melt, releasing the refrigerant pressure.
  • Page 41 2.13.2 Economized Mode In the economized mode the “main” refrigeration system operates the same as in the Standard mode except the control system operates (opens) the economizer expansion valve (ECXV). With the economizer expansion valve operating (see Figure 2.10), the capacity of the unit is increased by subcooling the liquid refrigerant entering the evaporator expansion valve.
  • Page 42 Figure 2.8 Refrigeration Circuit Standard Mode Evaporator EVOP EVOT EVXV Distributor Condensor Fusible Plug Subcooler Reciever Liquid Line Filter Drier Service Valve LIV N/C ECXV Compressor Discharge Service Valve Economizer CSMV Economizer ECOP Connection ECOT Compressor 62-12259 2–24...
  • Page 43 Figure 2.9 Refrigeration Circuit Economized Mode Evaporator EVOP EVOT EVXV Distributor Condensor Fusible Plug Subcooler Reciever Liquid Line Filter Drier Service Valve LIV N/C ECXV Compressor Discharge Service Valve Economizer CSMV Economizer ECOP Connection ECOT Compressor 2–25 62-12259...
  • Page 44 62-12259 2–26...
  • Page 45 SECTION 3 Operation Display WARNING Unit may start automatically at any time even if the switch is in the OFF position. Use proper lockout/tagout procedures before inspection/servicing. All unit inspection/servicing by properly trained personnel only. Figure 3.1 Display Module START/STOP DIESEL COOL .3 34...
  • Page 46 Display Screens START/STOP DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT STATUS OK Default Screen START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll INTELLISET PRETRIP HOUR UNIT METER DATA Typical Menu Screen SAMPLE SCREEN (1 OF 3) DISPLAYED ITEM #1 DISPLAYED ITEM #2 DISPLAYED ITEM #3...
  • Page 47 The unit will automatically start in the operating state it was in (Engine or Electric) when stopped. 2. The system will display the Carrier Transicold logo, display the default screen, present language selection and the hour meter readings (if configured to do so) along with a test flash of the alarm light and light bar amber LED’s.
  • Page 48 Inspect Mode Inspect mode provides an additional layer of safety for operators and technicians. Inspect mode should be used during all pretrip inspections of the unit. Inspect mode is a user activated feature that forces the unit to shutdown and remain in shutdown regardless of operating state.
  • Page 49 Switching Operating State If DIESEL is displayed, the unit is in Engine Operation. START/STOP DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT STATUS OK WARNING Do not connect power plug to any electrical outlet without checking that it meets the 460/3/60 and 30 Amp electrical requirements of the unit.
  • Page 50 Engine to Electric 1. If the standby electric cable is not already in place, ensure the external power circuit breaker is OFF, and connect the cable to the unit receptacle. 2. Turn the external circuit breaker ON. 3. Press and release the “MENU” key until the “STANDBY” soft key is displayed. 4.
  • Page 51 NOTES • The above settings are examples of possible settings. Factory IntelliSets are available from your authorized Carrier Transicold Truck/Trailer dealer • IntelliSet may be pre-programmed as “IntelliSleep” which allows Sleep mode to be entered by simply changing to that IntelliSet.
  • Page 52 START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll INTELLISET PRETRIP HOUR UNIT METER DATA 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode and the default screen displayed, press the “=” key. If the screen shown just above step 3 below is displayed, pro- ceed to step 3.
  • Page 53 Pretrip Pretrip is a set of tests run by the control system to check unit operation. It is recommended that a Pretrip is run prior to loading the refrigerated compartment. It will indicate a failure if one is detected. A Pretrip can be started at any box temperature. If Pretrip is started while the unit is in a Start-Stop off cycle the unit will start during the course of the test.
  • Page 54 NOTE At any time during Pretrip, the UNIT DATA soft key may be pressed to allow the user to view the unit data screen (refer to Section 3.15). To return to Pretrip from the unit data screen, press the BACK soft key.
  • Page 55 Test 2 - 12VDC Electrical Component Amperage Check: Test 2 will check the amperage (current) draw of the following components: • Battery Amp Draw (All Components Turned Off). • Evaporator Fan Contactor • AutoFresh Air Exchange Relay (AFAR) if equipped •...
  • Page 56 Changing Setpoint START/STOP DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT STATUS OK 1. Verify that the system is powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode and the default screen displayed (press the Back soft key if required). 2.
  • Page 57 Start-Stop Operation START/STOP DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT START/STOP MODE SELECTED 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode, press the START-STOP/CONTINUOUS key until “START/STOP” is highlighted. 2. The message “START/STOP MODE SELECTED” will be displayed in the MessageCenter for 10 seconds. 3.
  • Page 58 3.10 Continuous Operation CONTINUOUS DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT CONTINUOUS RUN MODE SELECTED 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode press the START-STOP/CONTINUOUS key until “CONTINUOUS” is displayed and highlighted. 2.
  • Page 59 3.11 Data Recorder The APX Control System contains a built-in data recorder with 3 megabytes of memory. The recorded data can be downloaded from the data recorder using either the TRU-Tech/TRU-View program or a Data Transfer USB mem- ory device. The data recorder reads the same input information as the control system (Functional Parameters, Configurations, and Unit Data) at all times.
  • Page 60 3.11.3 Data Downloading The data within the data recorder can be downloaded using either the TRU-Tech/TRU-View program with a PC- USB service cable connected to the USB interface port or with a data transfer USB memory device (refer to Sec- tion 5.3.3).
  • Page 61 3.12 Manual Defrost START/STOP DIESEL DEFROST DEFROST SETPOINT DEFROST CYCLE STARTED 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) press the MANUAL DEFROST key. NOTE This procedure may be demonstrated in PC mode but the unit will not actually enter defrost. 2.
  • Page 62 3.13 Language Selection START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll LANGUAGE DATA EXIT RECORDER 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode press the MENU key until LANGUAGE is displayed. 2.
  • Page 63 3.14 Advanced User START/STOP DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT STATUS OK NOTES • As shipped from the factory, the system will operate in the Driver mode. In the Driver mode, some data and menu items covered in this publication will not be available. •...
  • Page 64 3.15 Unit Data START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll INTELLISET PRETRIP HOUR UNIT METER DATA 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode, press the MENU key until UNIT DATA is displayed. 2.
  • Page 65 Unit Data List Engine Remote Sensors (Optional) System Information* Fuel level Remote Sensor 1 Date* Battery: O.K. Remote Sensor 2 Time* Amp Draw (DC) Remote Sensor 3 Trailer/Asset/Car ID* Engine Coolant Temperature Unit Serial #* Unit AC Current #1 Refrigeration System Unit Model #* Unit AC Current #2* Discharge Pressure*...
  • Page 66 Table 3–1 Unit Data DATA DEFINITION Refrigeration System DISCHARGE PRESSURE Refrigerant pressure leaving the compressor COMPRESSOR DISCHARGE TEMP Refrigerant temperature leaving the compressor SUCTION PRESSURE Refrigerant pressure entering the compressor SUCTION LINE TEMP Refrigerant temperature entering the compressor EVAPORATOR PRESSURE Refrigerant pressure leaving the evaporator EVAPORATOR OUTLET TEMP Refrigerant temperature leaving the evaporator...
  • Page 67 3.16 View Active Alarms ACTIVE ALARMS (2 OF 3) A00013 HIGH DISCHARGE PRESSURE A00022 LOW SUCTION PRESSURE A00028 CHECK REFRIG SYSTEM BACK CLEAR ALARMS 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode press the ALARM key.
  • Page 68 3.17 View Hour Meters START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll INTELLISET PRETRIP HOUR UNIT METER DATA 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode, press the MENU key until HOUR METERS is displayed.
  • Page 69 3.18 Functional Parameters START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll LANGUAGE DATA FUNCTIONS EXIT RECORDER 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode, and in the Advanced User mode, press the MENU key until FUNCTIONS is displayed. 2.
  • Page 70 Table 3–2 Functional Parameters Function Parameter Selections Description LOW SPEED DELAY 0 MINS TO 255MINS Select the length of time the unit is to remain in low speed after S/S: (in 1 minute increments) starting, before transitioning to high speed, when in Start-Stop Operation.
  • Page 71 Table 3–2 Functional Parameters Function Parameter Selections Description Fresh Protect -21.6° to -3.6° Supply air will be limited to the selected degrees below the cur- Continuous rent setpoint in continuous operation. Factory Default = -7.0 Fresh Protect -21.6° to -3.6° Supply air will be limited to the selected degrees below the cur- Start/Stop rent setpoint in start/stop operation.
  • Page 72 Table 3–2 Functional Parameters Function Parameter Selections Description WAKE UP TIME Set a time when Sleep mode will wake up, ranging from 1 hour to eight days from current time. Overrides OVERRIDE DOOR If the switches are all configured “Switch Not Installed”, this SWITCH SHUTDOWN parameter will not display.
  • Page 73 3.19 Sleep Mode START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll LANGUAGE DATA FUNCTIONS EXIT RECORDER 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode, and in the Advanced User mode, press the MENU key until FUNCTIONS is displayed. 2.
  • Page 74 Additional Sub-Menus: 1. “WAKE UP TIME” may be set to ON or OFF, the default setting is OFF. • When “WAKE UP TIME” is set to OFF the unit will remain in Sleep mode until it is taken out manually (refer to the preceding “TO EXIT SLEEP MODE”...
  • Page 75 3.20 Stopping The Unit START/STOP DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT STATUS OK SROS To stop the unit, place the START/RUN-OFF switch in the OFF position. The unit will shutdown immediately, while the system completes a shutdown sequence and then the display will go blank. The engine will stop and the dis- play will turn off.
  • Page 76 Carrier Transicold has worked with approved communication providers with recommended installation locations, and wiring connections to Carrier units. Instructions for installing this equipment is supplied by each individual pro- vider, and not by Carrier Transicold. Communications electrical harnesses are available from Carrier Transicold Performance Parts Group (PPG).
  • Page 77 Once Emergency Bypass mode has been activated, the unit will operate normally for 24 hours, a countdown timer will be shown on the display. This 24-hour window of operation will keep the load safe, and provide enough time to contact the nearest Carrier Transicold Service Center for repair of the unit. START/STOP...
  • Page 78 3.23 Remote Panel The unit may be fitted with an optional remote control panel. The remote panel, which is very similar to the display module, displays compartment setpoints, compartment temperatures and operating modes (heat, cool or defrost). The setpoint may be modified and the unit may be started and stopped using the remote panel. This compact remote panel can be mounted to suit the individual operator’s preferences - on the front bulkhead or in the compartment (even in the wall itself).
  • Page 79 The following unit functions are controlled the same as the main display: • Display compartment temperatures, Section 3.2 • Display the current mode of operation for each compartment, Section 3.2 • Intelliset selection, Section 3.6 • Initiate Pretrip, Section 3.7 •...
  • Page 80 62-12259 3–36...
  • Page 81 SECTION 4 Engine and Temperature Control NOTES 1. If the unit is in an alarm condition, the control system alarm response may override the operation described herein. If an alarm is displayed in the MessageCenter, refer to the specific alarm description in Section 7 for “Unit Control”...
  • Page 82 To start the unit, place the SROS in the run position. • Power flows from the SROS out of the display module through DM-7 to the J1 jumper fuse (F15) to splice point 31 (SP31). • From splice point 31 to MSM and OGF (SP31 to 3MSM-35 and SP31 to HVB1-J to HVB4-1 to OGF-12+). •...
  • Page 83 NOTE The unit will not restart for at least 30 seconds following a shutdown. 4.3.2 Loss of Standby Power When the unit is running on standby power and power is lost, alarm 00073 No Power - Check Power Cord will be activated and the unit will shut down for five minutes.
  • Page 84 If alarm 00129 Check Engine Coolant Sensor is active, the ambient temperature sensor will be used. If both alarm 00129 Check Engine Coolant Sensor and alarm 00121 Check Ambient Air Sensor are active the control system assumes a temperature of less than 32°F (0°C) for the preheat timing. During the last five seconds of preheat OR for five seconds before a start attempt, if no preheat is required, the buzzer (B) is energized;...
  • Page 85 4.5.1 Start-Stop Configuration Start-Stop Operation is dependent on both Configuration and Functional Parameter settings. The first setting to be considered is the START-STOP PARAMETERS Configuration. This setting determines control actions when in the Perishable Range or Frozen Range. The available settings are TOGETHER and SEPARATE. •...
  • Page 86 4.5.2 Stop Parameters Whenever the unit starts in Start-Stop Operation, it will remain in the Start-Stop ON cycle until all five of the follow- ing criteria have been satisfied: 4.5.2.1 Unit has run for the selected Minimum Run Time The MINIMUM RUN TIME is selected in the control system Functional Parameters. The purpose of this is to force the unit to run long enough to completely circulate the air inside the compartment, and to ensure that the product temperature is at setpoint.
  • Page 87 If the temperature requirement has been satisfied while one of the other shutdown requirements has not been met, the unit will operate with the compressor and heaters off and the evaporator fan running until this parameter has also been met. 4.5.3 Re-Start Parameters While the unit is in a Start-Stop OFF Cycle, restart will be initiated when one of the following conditions occurs:...
  • Page 88 4.5.3.5 Compartment temperature has exceeded the Override Functional Parameter value During MINIMUM OFF TIME the control system continually monitors the refrigerated compartment tem- perature and the override functional parameter value. During the Minimum Off Time, if the refrigerated compartment temperature drifts this far above or below setpoint in the Perishable Range, or above set- point in the Frozen Range, the unit will override the Minimum Off Time, and restart.
  • Page 89 Control Temperature with Fuel Saver OFF COOL MODE Switch ON when CT-SP is Switch OFF when CT- greater than or equal to SP is less than -0.36°F (- 0.36°F (0.2°C) 0.2°C) NULL MODE Between Cool and Heat or Heat and Cool HEAT MODE Switch On when CT- SP is Switch Off when CT-...
  • Page 90 4.6.4.1 Pulldown Pulldown will be entered: • Following a Start-Up • Following a Setpoint change (requiring additional cooling) • Following an operational change (Start-Stop vs Continuous or Engine Operation vs Electric Operation) • Following a defrost termination • When all other Stop Parameters have been met except the refrigerated compartment Temperature Stop Parameter Pulldown will end when one of the following occurs: •...
  • Page 91 Control Temperature with Fuel Saver OFF HTCON1 Switch Off when CT- Switch On when CT- SP is SP is greater than less than -0.54°F (-0.3°C) -0.36°F (-0.2°C) HTCON2 Switch Off when CT- Switch On when CT- SP is SP is greater than less than -3.6°F (-2.0°C) -3.24°F (-1.8°C) Control Temperature with Fuel Saver ON...
  • Page 92 Defrost Defrost is an independent cycle that overrides cooling and heating functions in order to de-ice the evaporator. When the unit enters defrost the MessageCenter will display DEFROST CYCLE STARTED for the first 10 seconds and then display the default message for the remainder of the cycle. DEFROST is displayed in the Operator Mes- sage Panel, along with the setpoint while the unit is in the cycle.
  • Page 93 4.8.1.2 Defrost Based on Time Time interval between defrosts is selected in the Functional Parameters. The parameter value may be set to 1.5, 3, 6, or 12 hours. The factory default setting is six hours. NOTE The defrost timer will not count when the unit is in defrost, the unit is in a Start/Stop off cycle or the DTT is greater than 40.0°F (4.4°C).
  • Page 94 Two ranges are available for selection, Range Lock 1 and Range Lock 2. Each Range can be independently set to lock it’s setpoint temperatures into either Start-Stop or Continuous operation. Each Range has its own selectable minimum and maximum temperature, which define the span of the range. If some setpoint temperatures are contained in both ranges due to range overlap, Range 1 will always have priority over Range 2.
  • Page 95 Figure 4.3 Range Lock Settings - Overlapping Range 1 always has priority when Range 1 & 2 overlap Range 1 is set for 32 to 42 F Range 2 is set for -22 to (0 to 5.6 C) 89.6 F (-30 to 32 C) Set for Continuous Set for Start-Stop Range 2...
  • Page 96 When the unit restarts, it will return to Continuous Operation for a minimum of 15 minutes or the Minimum Run Time Functional Parameter setting, whichever time is longer. The original activation conditions must then be met in order for the unit to return to ProductShield Econo: Start/Stop. ProductShield Econo Go To Start/Stop Examples: The following examples apply in situations where all other Start/Stop conditions have been met.
  • Page 97 these configurations, the unit will enter High Air when ambient temperature is above the high setting or below the low setting. • When the High Air Maximum Temperature Configuration is set for a value and High Air Minimum Tempera- ture Configuration is set to OFF, the microprocessor will switch to high speed operation when the ambient temperature is above the setting.
  • Page 98 4.10.2 Cargo Protect Mode The control system will activate Cargo Protect mode when the 00122 Check Return Air Sensor 00123 Check Supply Air Sensor alarms activate at the same time. • If the setpoint is in the perishable range (refer to Section 4.6.1), the unit will shutdown.
  • Page 99 10. Low Suction Pressure Override If suction pressure is below -4 psig (-.27 bar) for > 20 seconds , inhibit high speed operation. Remain in low speed for five minutes and until the suction pressure > -3 psig (-.2 bar). 11.
  • Page 100 62-12259 4–20...
  • Page 101 SECTION 5 Control System Interface Interface Methods There are four methods for interfacing with the APX Control System: 1. Driver/Advanced User Interface: Activities such as start, stop, Pretrip, reading alarms, reading data and changing Functional Parameters may all be performed using the display mounted keys (refer to Section 2.
  • Page 102 Technician mode should be canceled when work is complete. If Technician mode is not canceled, Technician mode will be available for 60 minutes after the last key press without requiring a code, even after placing the SROS in the OFF and then back in the RUN/STOP position.
  • Page 103 3. The hour meter screen will display with a 15-second timeout. Press the ▲ or ▼ key to scroll through the available selections. With the desired sub-menu highlighted, press the “=” key to view the data. Standby Protect Hours STANDARD HOUR METERS (2 OF 3) OTHER METERS and COUNTERS Engine Protect Hours ENGINE HOURS...
  • Page 104 Figure 5.3 Inactive Alarms ACTIVE ALARMS NO ACTIVE ALARMS BACK CLEAR INACTIVE ALARMS ALARMS INACTIVE ALARMS I00093 CHECK START-UP BUZZER P00144 CHECK UL1 CIRCUIT P00141 PRETRIP STOPPED BY USER CLEAR CLEAR BACK EXIT INACTIVE 1. Enter the Technician mode, as described in Figure 5.1, then press the ALARM key.
  • Page 105 5.2.3 Configuration Settings Configuration settings match the APX Control System to the unit and define APX Control System action under var- ious operational conditions. Instructions for working with Configurations are provided below. 1. Enter the Technicians Menu, highlight CONFIGURATION SETTINGS and then press the “=” key as described in Figure 5.1.
  • Page 106 11. To change a value selection screen, press the “=” key with the desired Configuration sub-menu highlighted as in Sample Screen A. The individual Configurations within the sub-menu will display as in Sample Screen B. Press the ▲ or ▼ key to scroll through the individual Configurations. The individual Configurations will highlight as the list is scrolled.
  • Page 107 5.2.4 Component Test Mode Component Test mode allows the technician to energize individual circuits for five minutes at a time. The unit is not allowed to start when the system is in Component Test mode. Instructions for entering the Component Test mode are provided in Figure 5.5.
  • Page 108 4. When a component is energized in Component Test mode, the AMP DRAW display initially shows the cur- rent draw of the system, after a few seconds the display will change to reflect the current draw of the system plus the added component. for example, if CCON is energized in Component Test mode, the AMP DRAW display might initially show 0.75 Amps, then after a few seconds, the AMP DRAW display will change to 1.0 Amps.
  • Page 109 7. During evacuation, the APX Control System will monitor the pressure transducer readings. • The system will remain in “RECOVER / LEAK CHK / EVAC MODE” as evacuation is started. • As the refrigeration system is evacuated, the system pressure will go into a deep vacuum. Once the CSP is less than 20 in/hg and the CDP is less than +5 psig the operator message panel will change to “EVAC/ CHARGE MODE”.
  • Page 110 1. With the START/RUN - OFF switch in the OFF position, remove protective cover from the USB interface port and insert a Data Transfer USB. The Carrier Transicold logo will display and then the MessageCenter will display one or more USB soft key descriptions.
  • Page 111 READING USB USB Port 1. Data may be downloaded with the system powered up or turned off. Remove protective cover from the USB interface port and insert the Carrier Transicold APX USB flash drive. The MessageCenter will display READING USB. NOTE If Configured to do so, the system will prompt for entry of the data protect PIN code (refer to “PRO-...
  • Page 112 Whenever installing new software, it is always a good idea to start the unit and give it a quick check over prior to performing the operation. All units should have the software upgraded to the latest ver- sion, provided for Carrier Transicold dealers on the Carrier SolutionCenter. 62-12259...
  • Page 113 Figure 5.8 Installing Software START/STOP DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT READING USB USB Port 5–13 62-12259...
  • Page 114 1. Ensure the desired software version folder is loaded in the “PROGRAM” folder on a Data Transfer USB memory device. 2. With the system powered or off, remove the protective cover from the USB port and insert USB. The Mes- sageCenter will display READING USB.
  • Page 115 5.3.5 Transferring Configuration Files Instructions for installing configuration files into the APX Control System from a Data Transfer USB memory device are provided below. Configuration (*.set) files consist of one of the following types of files. A “Configuration” file contains a complete set of Configuration, Functional Parameter and Data Recorder settings for the system. An “IntelliSet”...
  • Page 116 Tru-Tech and Tru-View The TRU-Tech and TRU-View program allows the user to access system data using a computer when the unit is not running and without starting the eight hour data recorder timer. The application interface will provide additional programming and configuring capabilities that will not be available using the display mounted keys. The data recorder may also be configured using the TRU-Tech program.
  • Page 117 When field diagnosis of a Carrier Transicold refrigeration unit determines that an APX main microprocessor is not performing properly and must be replaced, the replacement module must be setup for this unit and customer by entering the required Configurations, Functional Parameters and data recorder settings.
  • Page 118 The preferred method for setup of the main microprocessor is to use the display mounted keys or a Data Transfer USB memory device. All required changes, except unit specific and time sensitive data, may be performed using the USB memory device. If a USB is not available the main microprocessor may be setup using TRU-Tech.
  • Page 119 5.5.3 Microprocessor Setup 1. Ensure that the replacement module is in place, all wires connected and the negative battery cable is recon- nected. 2. Make sure the latest software has been loaded to ensure all modules are compatible, refer to Section 5.3.4 When a module is replaced, software should be upgraded before switching the unit on.
  • Page 120 NOTES 1. If a Data Transfer USB memory device will be used to setup the remainder of the main microprocessor set- tings, proceed to Section 5.5.7 after the settings are entered. 2. After the unit specific and time sensitive configuration settings are complete use the ▲ or ▼ key until “CON- FIGS COMPLETE, = TO EXIT”...
  • Page 121 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description Configuration Settings Press the ▲ or ▼ keys to display configurations: UNIT IDENTIFICATION CONFIGURATION SETTINGS (1 OF 11) SETPOINT(S) and RANGE LOCK UN IT IDENTIFICATION START-STOP SETTINGS SETPOINT(S) AND RANGE LOCK INTELLISET and PRODUCT SHIELD...
  • Page 122 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description Setpoint (s) and Range Lock DECIMAL DISPLAYED DISPLAYED = setpoint will be shown with a decimal and temperatures may be selected to a tenth of a de- gree.
  • Page 123 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description S/S PARAMETERS TOGETHER TOGETHER = When the Minimum Run Time, Mini- mum Off Time, Restart Temperature, Maximum Off SEPARATE Time, and Override Temperatures are set in the Functional Parameter List, the same values will be used for both Frozen and Perishable setpoints.
  • Page 124 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description PRODUCTSHIELD: HIGH AIR OFF = The unit will operate normally in high and low speeds. ON = In Engine Operation, the unit will operate in high speed when the ambient air temperature is out- side a user defined range.
  • Page 125 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description ENGINE OIL PRESS YES / NO YES = When alarm 00011 Check Engine Oil Pres- SHUTDOWN sure has been activated three times in the last two hours of engine operation alarm 00021 Technician Reset Required...
  • Page 126 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description HP ALARM SHUTDOWN DELAY YES / NO YES = for the first two occurrences of a high- pressure condition, the unit will shutdown without triggering alarm 00013 until the HP safety switch close, for up to 15 minutes.
  • Page 127 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description DISPLAY TOTAL SWITCH ON YES / NO YES = This hour meter will be displayed during the startup messaging sequence and will be in hour me- ter menu.
  • Page 128 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description PM 1 - 5 RESET INTERVAL ENGINE HOURS 0 or 50 The value to be entered here is the desired number TO 30,000 hours in 50 of hours or cycles between PM Maintenance Alarms for this meter.
  • Page 129 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description UNIT SHUTDOWN BELOW If Door Switch = Unit Shutdown is selected: OFF = the unit will shutdown at any ambient tem- (ambient air temperature) 120 to -20°F (49 to -29°C) perature.
  • Page 130 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description ENABLE ADVANCED USER YES / NO YES = Advanced User mode is automatically en- MODE: abled when the unit is powered on. NO = Driver mode is automatically enabled when the unit is powered on and Advanced User mode may be enabled manually.
  • Page 131 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description LIGHT BAR NOT INSTALLED NOT INSTALLED = a remote light bar is not installed 2 light = a two light bar is installed. 2 LIGHT BATT CHARGER NO TEMP...
  • Page 132 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description DIESEL OFFSET MAX AMPS The maximum allowable amperage in low speed op- eration will be the configured MAX GEN AMPS or 0 TO 10 MAX STANDBY AMPS less this value.
  • Page 133 Table 5–1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) Configuration Selections Description AUTOFRESH AIR DELAY SETPOINT SETPOINT - Once the compartment temperature has reached setpoint 1.5°F (0.8°C), the Auto- Fresh 0-48 HOURS IN Air Exchange will start to operate based on the se- 1 HOUR lected Functional Parameters.
  • Page 134 62-12259 5–34...
  • Page 135 SECTION 6 MessageCenter Messages The following table lists common messages which do not appear in other lists in this manual and a description of their meaning. Refer to Section 7 for a list of Alarm messages. Refer to Section 3.15 for a list of Unit Data mes- sages.
  • Page 136 Table 6–1 MessageCenter Messages Message Description DOOR OPEN A refrigerated compartment door is open. DOOR OPEN - LOW SPEED A refrigerated compartment door is open forcing the unit to run in low speed. ENTERING SERVICE MODE The initial message for Service mode. ERROR: ENG HRS >...
  • Page 137 Table 6–1 MessageCenter Messages Message Description PRODUCTSHIELD: ECONO ON The unit is operating in ProductShield Econo which overrides normal unit Start-Stop or Continuous Run operation. Refer to Section 4.9.3. PRODUCTSHIELD: HIGH AIR ON The unit is operating in ProductShield High Air which overrides normal unit speed operation.
  • Page 138 Table 6–1 MessageCenter Messages Message Description TIME SELECTION NOT CHANGED A time change was started but not entered (saved) in Configuration List. TRIP START ENTERED The Trip Start marker has been placed in the data recorder. UNIT BATTERY TOO LOW The unit battery has dropped below 7 volts for more than 10 seconds.
  • Page 139 SECTION 7 Alarm Troubleshooting WARNING APX control system equipped units may start automatically at any time the START/ RUN-OFF switch is in the START/RUN position. Also, the unit may be fitted with two way communication equipment that will allow starting of the unit from a remote location even though the switch is in the OFF position.
  • Page 140 Notes NOTE Note 1: The active alarm list may be cleared when in the Driver mode or Advanced User mode by pressing the CLEAR ALARMS soft key. That is: the alarm is “cleared” from the active alarm list and moved to the inactive alarm list for later review if the condition that caused the alarm has been cor- rected.
  • Page 141 Alarms 00001 Low Level Fuel Warning NOTE This is an optional alarm which will only occur when a fuel level sensor is present and configured “YES”. • ACTIVATION: The ECU circuit is energized (PM-32 to ENCU-44) and fuel level is 15% or less for more than 30 seconds.
  • Page 142 00011 Check Engine Oil Pressure NOTE This alarm may be activated if too high a viscosity oil is used in cold ambient. • ACTIVATION: The ECU circuit is energized (PM-32 to ENCU-44) and engine oil pressure is below 12 psig (0.82 bar) for longer than five seconds while the engine is running.
  • Page 143 00012 High Coolant Temperature • ACTIVATION: Condition 1: Ambient temperature is below 120°F (48.9°C) and engine coolant temperature is above 230°F (110°C). Condition 2: Ambient temperature is above 120°F (48.9°C) and, engine coolant temp is above 241°F (116°C). Condition 3: Ambient temperature is at or above 120°F (48.9°C) and the engine coolant temperature has remained between 230 and 241°F (110 and 116°C) for more than five minutes.
  • Page 144 00012 High Coolant Temperatures (continued) 5. Check Engine Coolant Temperature Sensor (ENCT) a. Refer to procedure for alarm 00129 Check Engine Coolant Sensor. Alarm condition must be corrected and the alarm cleared to continue. b. Inspect sensor and connector pins and terminals. Verify no damage to sensor. Verify no damage, moisture, or corrosion in connector.
  • Page 145 00013 High Discharge Pressure • ACTIVATION: Compressor discharge pressure switch (HPS) contacts are open. HPS contacts open when the discharge pressure rises. Refer to Section 2.9. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still energized.
  • Page 146 00014 High A/C Amps • ACTIVATION: AC Current Sensor 1, 2, or 3 is greater than 28.5A for 3 seconds. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still energized.
  • Page 147 00015 Battery Voltage Too High • ACTIVATION: Battery voltage at the main microprocessor is greater than 17 VDC. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still energized. NOTE RESET CONDITION: Auto reset after 15 minutes when the voltage at the main microprocessor is between 11 and 14 VDC, or alarm may be manually reset using the display mounted keys or by...
  • Page 148 00016 Battery Voltage Too Low • ACTIVATION: Battery voltage at the main microprocessor is less than 10 VDC (except when the engine starter is engaged). • UNIT CONTROL: Engine and Electric Operation: Shutdown and alarm. Alarm only if activated while starting unit.
  • Page 149 00017 High Compressor Discharge Temp • ACTIVATION: “Check Compressor Discharge Sensor” alarm not active (if alarm is active, refer to 00125 Check Compressor Discharge Sensor first) and: discharge temp rises above 285.1°F (140.6°C) for 30 seconds, or discharge temp rises above 295.0°F (146.1°C). •...
  • Page 150 00018 Low Refrigerant Pressure • ACTIVATION: Suction Pressure has been less than -6.3 psig (-0.43 bar) for the Low Suction Pressure Configuration time or 10 seconds (whichever is less). • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Alarm only or (if configured for shutdown) refrigeration system shutdown and alarm with PSCON still energized.
  • Page 151 00019 Low Fuel Shutdown NOTE This is an optional alarm. This alarm will only occur if the Fuel Level Sensor Configuration is YES. • ACTIVATION: The fuel level is 10% or less for more than 60 seconds AND 00126 Check Fuel Sensor Circuit is not active.
  • Page 152 00021 Technician Reset Required • ACTIVATION: The High Engine Temp Shutdown Configuration and/or Engine Oil Pressure Shutdown Configuration is/are set to YES, and 00011 Check Engine Oil Pressure, 00012 High Coolant Temperature, or 00129 Check Engine Coolant Sensor has become active and shut the unit down three times within the past 2 hours.
  • Page 153 00022 Low Suction Superheat • ACTIVATION: Alarms 00127 Check Suction Temperature Sensor and/or 00131 Check Evaporator Temperature Sensor are not active and Compressor suction superheat (Compressor Suction Temperature (CST) minus saturated temperature for Compressor Suction Pressure (CSP) is less than 8°F (4.4°C) for more than 3-4 minutes.
  • Page 154 00023 A/C Current Over Limit • ACTIVATION: The high voltage amp draw is over the limit shown in the following table for more than 10 seconds. CONDITION DRAW Engine High / Low Speed, Standby Cool or Pretrip / Engine Off Engine High Speed Heat Engine Low Speed or Standby Heat Engine High Speed Defrost (With heaters energized)
  • Page 155 00023 Low Refrigerant Pressure (continued) 4. Check High Voltage Components Amp Draw (with the unit operating) a. Check condenser fan amp draw on all legs. (CDCON) b. Check evaporator fan motor amp WARNING draw on all three legs (1EVCON) c. Check compressor amp draw on all three legs. (CCON) d.
  • Page 156 00024 Compression Ratio Exceeded • ACTIVATION: If the compressor compression ratio is greater than 24 for 20 seconds. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still energized. •...
  • Page 157 00027 High Suction Pressure • ACTIVATION: The refrigeration system is running and the suction pressure has been greater than 98 psig (6.7 bar) for more than 10 minutes. • UNIT CONTROL: Engine Operation: Alarm only or (if configured for shutdown) engine and unit shutdown and alarm.
  • Page 158 00028 Check Refrigeration System • ACTIVATION: The refrigeration system is running and the discharge pressure is less than 5 psig (0.34 bar) higher than suction pressure for more than 30 seconds. • UNIT CONTROL: Engine Operation: Alarm only or (if configured for shutdown) engine and unit shutdown and alarm.
  • Page 159 00031 Failed to Start - Auto Mode • ACTIVATION: Engine has tried to start three times unsuccessfully in the Auto Start mode. • UNIT CONTROL: Engine Operation: Shutdown and alarm. Electric Operation: Alarm condition only. • RESET CONDITION: Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 160 00034 Engine Failed to Stop • ACTIVATION: When in Engine Operation, engine is turning more than 500 RPM for 20 seconds after unit shutdown or cycled off or Oil Pressure switch is closed longer than 20 seconds after unit shutdown or cycle off.
  • Page 161 00035 Check Starter Circuit • ACTIVATION: Engine speed fails to reach 50 rpm during two start attempts. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: This alarm will not activate in Electric Operation. • RESET CONDITION: Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 162 00036 Check Coolant Temperature • ACTIVATION: Coolant temperature is below 32°F (0°C) after the engine has been running for five minutes. • UNIT CONTROL: Engine Operation: Alarm only. Electric Operation: This alarm will not activate in Electric Operation. • RESET CONDITION: Auto reset when coolant temperature is higher than 36°F (2.2°C) or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 163 00038 Check High Speed RPM • ACTIVATION: The control system is calling for high speed operation, and engine speed is less than 1650 rpm, or greater than 1950 rpm for more than 60 seconds (120 seconds when the control system calls for a change from low to high speed, or when unit first starts).
  • Page 164 00039 Check Engine RPM • ACTIVATION: In Engine Operation and 00130 Check Engine RPM Sensor is not active and engine speed is less than 1300 rpm, or greater than 1950 rpm for five minutes, or engine rpm to less than 1290 rpm for five seconds after the engine speed has been greater than 1300 rpm for 3 seconds.
  • Page 165 00041 Engine Stalled • ACTIVATION: The control system is calling for the engine to run, Engine speed sensor is good, and engine speed is less than 10 rpm; or alarm 00130 Check Engine RPM Sensor is ON, and the Oil Pressure switch contacts are open.
  • Page 166 00041 Engine Stalled (continued) 5. Check Engine Speed Sensor (ENSSN) - Inspect harness, connector pins and terminals. (See wiring schematic Section 10.) Verify no physical damage to harness, and no damage, moisture, or corrosion in connectors. 6. Check Engine Air-Intake System a.
  • Page 167 00051 Alternator (Battery Charger) Not Charging • ACTIVATION: Unit is running and the current flow is less than -1.0 amps between the alternator and the battery for three continuous minutes. • UNIT CONTROL: Engine Operation: Alarm only or (if Alternator Check Shutdown configuration is set to YES (configured for shutdown) engine and unit shutdown and alarm.
  • Page 168 00053 Box Temperature Out-of-Range • ACTIVATION: Condition One: If the unit is running in Pulldown and the SAT is not greater than 1°F (0.56°C) below the RAT or if the unit is running in Pull-Up and the SAT is not above the RAT, the configured action (Alarm only after 30 minutes or Alarm and Shutdown after 45 minutes) will be activated.
  • Page 169 00053 Box Temperature Out-of-Range (continued) 3. Check for Any Shutdown Alarm(s) - Check the Alarm List for any shutdown alarms. Alarm conditions must be corrected and the alarm cleared to continue. 4. Check for Alarm 00018 Low Refrigerant Pressure - Alarm conditions must be corrected and the alarm cleared to continue.
  • Page 170 00055 Check Defrost Air Switch • ACTIVATION: The defrost air switch has called for a defrost cycle within eight minutes of a defrost termination for two consecutive defrost cycles. (The air switch contacts were closed continuously for 15 seconds before the defrost cycle was started.) •...
  • Page 171 00057 Check Remote Switch 1 (REMS1) • ACTIVATION: REMS1 is set to trigger an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds. • UNIT CONTROL: Engine and Electric Operation: May be configured as alarm only, alarm and force low engine speed, or alarm and shutdown.
  • Page 172 00058 Check Remote Switch 2 (REMS2) • ACTIVATION: Remote Switch 2 is set to activate an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds. • UNIT CONTROL: Engine and Electric Operation: May be configured as alarm only, alarm and force low engine speed, or alarm and shutdown.
  • Page 173 00059 Data Recorder Not Recording • ACTIVATION: No data is being recorded by the data recorder. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Alarm may be manually reset using the display mounted keys. NOTE Follow the steps below until a problem is found. Once a repair or correction has been made, clear the alarm(s).
  • Page 174 00061 Door Open (DS1) • ACTIVATION: DS1 is set to trigger an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds. • UNIT CONTROL: Engine and Electric Operation: May be configured as alarm only, alarm and force low engine speed, or alarm and shutdown.
  • Page 175 00066 Check Evaporator Sensor Group • ACTIVATION: The unit has been shut off for at least 48 hours. During wake up, a temperature comparison of the Evaporator Temperature Sensors (RAT, SAT, DTT) is performed. If the highest and the lowest temperature readings are more than 3.6°F (2.0°C) apart this alarm will be activated. The Evaporator Temperature Sensors test for this alarm is only run when main power is off and the unit is not running.
  • Page 176 00073 No Power - Check Power Cord • ACTIVATION: The unit is set to operate in electric AND no AC power; incoming voltage at the High Voltage Transformer (HVT) is less than 300VAC. • UNIT CONTROL: Engine Operation: System will remain in Engine Operation. Electric Operation: If the “NO A/C POWER”...
  • Page 177 00074 Phase Reversed • ACTIVATION: If the system is in electric mode and the Stop/Run Switch is ON and the system cannot properly detect the phase. • UNIT CONTROL: Engine Operation: Alarm only. Electric Operation: Required Shutdown. • RESET CONDITION: Auto reset when and the phase reversed switch = phase reverse okay for 2 seconds, or switch to diesel mode.
  • Page 178 00075 Compressor Motor Overload • ACTIVATION: If alarm 00022 Low Suction Superheat, 00027 High Suction Pressure and/or 00028 Check Refrigeration System was triggered with current below 5.5 amps. This alarm will also trigger on restart from alarm 00022, 00027 and/or 00028 if compressor current does not rise above 1 amp, and alarm 00013 High Discharge Pressure is not active.
  • Page 179 00076 Condenser Motor Overheated • ACTIVATION: The condenser fan motor Internal Protectors (IP-CDM1) circuit is open and alarm 00013 High Discharge Pressure is not active. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still energized.
  • Page 180 00076 Condenser Motor Overheated (continued) 7. Check IPC circuit a. Use Component Test mode to energize CDCON1 circuit. (Refer to Section 5.2.4.) Output will come b. Verify 12 VDC at CDCON1 A1 and PM-11. Inspect wiring between condenser, PM, and CCB. c.
  • Page 181 00077 Evaporator Motor Overheated • ACTIVATION: The evaporator fan motor Internal Protector (IP-EVM) is open and alarm 00013 High Discharge Pressure is not active. • UNIT CONTROL: Engine and Electric Operation: Shutdown and alarm • RESET CONDITION: Alarm 00109 Check 1EVCON Coil is not active.
  • Page 182 00084 Check Remote Alarm Light This alarm may be activated with earlier software revisions, follow procedure for alarm 06001 Check Light Bar. 00093 Check Startup Buzzer • ACTIVATION: The Buzzer (B) circuit is shorted or open. (The Buzzer output from the microprocessor [PCM-23 to 3MM15] is negative, so the circuit will not be shorted to ground, but is shorted either within the Buzzer itself, or to a positive wire.) •...
  • Page 183 00094 Check Compressor Contactor 1 • ACTIVATION: Compressor motor contactor (CCON) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Shutdown and alarm. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 184 00095 Check CDCON1 Coil • ACTIVATION: Condenser fan motor contactor (CDCON) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 185 00096 Check GENCOIL Coil • ACTIVATION: Generator contactor (GENCON) circuit is shorted or open. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 186 00098 Check High Temperature Thermostat • ACTIVATION: With the Main Power switch toggled out of the OFF position, the EVHTS circuit is open. • UNIT CONTROL: Engine and Electric Operation: Alarm and no heat allowed. • RESET CONDITION: Auto Reset when the EVHTS circuit is okay for 15 minutes, or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 187 00100 Overload / Ground Fault • ACTIVATION: Engine or Electric Operation is being called for and the overload ground fault module is reading more than 40 Amps on any A/C current leg OR there is A/C voltage leaking to ground of more than 150 Milli-amps.
  • Page 188 00109 Check 1EVCON Coil • ACTIVATION: Evaporator fan motor contactor (1EVCON) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 189 00114 Check LIV Circuit • ACTIVATION: A problem has been detected in the LIV coil circuit. If this alarm is activated while the control system is calling for LIV to be energized, the circuit is detected shorted. If this alarm is activated at any other time, the circuit is detected open.
  • Page 190 00121 Check Ambient Air Sensor • ACTIVATION: Ambient Air Temperature Sensor (AAT) is not within range of -53 to +158°F (-47° to +70° C). • UNIT CONTROL: Engine and Electric Operation: A value of 122°F (50°C) will be used for any calculations. •...
  • Page 191 00122 Check Return Air Sensor • ACTIVATION: Return Air Temperature Sensor (RAT) is not within range of -53 to +158°F (-47 to +70° C). • UNIT CONTROL: Engine and Electric Operation: • If alarm 00123 Check Supply Air Sensor is not active: Alarm and switch to supply air control. •...
  • Page 192 00123 Check Supply Air Sensor • ACTIVATION: Supply Air Temperature Sensor (SAT) is not within range of -53 to +158°F (-47 to +70° C). • UNIT CONTROL: Engine and Electric Operation: • If alarm 00122 Check Return Air Sensor is not active: Temperature Control is set for Supply Air and setpoint is in the perishable range: Alarm and switch to return air control.
  • Page 193 00124 Check Defrost Termination 1 Sensor • ACTIVATION: Defrost Termination Temperature Sensor (1DTT) is not within the range of -53° to +158°F (-47° to +70° C.) • UNIT CONTROL: Engine and Electric Operation: If alarm 00122 Check Return Air Sensor is not active: Alarm and initiate defrost if 1RAT is below 45°F (7.2°C).
  • Page 194 00125 Check Compressor Discharge Sensor • ACTIVATION: Compressor Discharge Temperature Sensor (CDT) is not within the range of -40° to +392°F (-40° to +200°C). • UNIT CONTROL: Engine and Electric Operation: Alarm Only. • RESET CONDITION: Auto reset when sensor is in range or, alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 195 00127 Check Suction Temperature Sensor • ACTIVATION: Compressor Suction Temperature Sensor (CST) is not within the range of -53 to +158°F (-47 to +70° C.) • UNIT CONTROL: Engine and Electric Operation: Alarm only. Control of Superheat will switch to supply air temperature sensor.
  • Page 196 00128 Low / Unbalanced A/C Amps • ACTIVATION: The compressor is on and AC Current Sensor 1, 2 or 3 is less than 5 amps for 10 seconds. OR, if the difference between AC Current 1 and AC Current 2, 2-3 or 1-3 is greater than 10 amps for 10 seconds.
  • Page 197 00129 Check Engine Coolant Sensor • ACTIVATION: Engine Coolant Temperature Sensor (ENCT) is not within the range of -58 to +266°F (-50 to +130°C). • UNIT CONTROL: Engine Operation: Alarm Only. Electric Operation: This alarm does not activate in electric operation. •...
  • Page 198 00130 Check Engine RPM Sensor • ACTIVATION: If ambient temperature is above 32°F (0°C), and this is the second or third start attempt, and the engine oil pressure switch is closed (oil pressure good), and engine speed is sensed at less than 1000;...
  • Page 199 00131 Check Evaporator Temperature Sensor • ACTIVATION: Evaporator Outlet Temperature Sensor (EVOT) is not within the range of -53 to +158°F (-47 to +70°C) • UNIT CONTROL: Engine and Electric Operation: Alarm only and superheat for EVXV will be calculated using SAT or DTT if alarm 00123 Check Supply Air Sensor is active.
  • Page 200 00133 Check Remote Temperature Sensor 1 00134 Check Remote Temperature Sensor 2 00135 Check Remote Temperature Sensor 3 • ACTIVATION: Remote Temperature Sensor (REMSN1, REMSN2 or REMSN3) is not within the range of -53 to +158°F (-47 to +70°C.) • UNIT CONTROL: Engine and Electric Operation: Alarm only.
  • Page 201 P00141 Pretrip Stopped by User • ACTIVATION: Pretrip cycle was stopped by user before the Pretrip cycle ended automatically. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. • RESET CONDITION: Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 202 P00153 Check Return Air Sensor • ACTIVATION: Return Air Temperature Sensor (RAT) is not within the range of -53 to +158°F (-47 to +70°C). • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”. •...
  • Page 203 P00157 Check Battery Current • ACTIVATION: With all circuits off, current flow of more than +1.5 to -2.0 amps is detected in the 12 VDC electrical circuits. NOTE If this alarm occurs, Pretrip Test #2 will be skipped and Pretrip Test #3 will start. •...
  • Page 204 P00159 Check Defrost Termination 1 Sensor • ACTIVATION: Defrost Termination Temperature Sensor (1DTT) is not within the range of -53 to +158°F (-47 to +70°0 C.) • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
  • Page 205 P00162 Check AFA Solenoid Circuit • ACTIVATION: The (AFAR) circuit current draw is outside the normal range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”. • RESET CONDITION: Auto reset if Pretrip is started again, or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 206 P00174 Check Low Speed RPM • ACTIVATION: Test #4: With the CAN calling for low speed, engine speed is NOT between: 1300 and 1400 rpm. Test #6: 15 seconds after the High Speed Pretrip Test #5, engine speed has NOT dropped back to the low speed range (within 15 seconds).
  • Page 207 P00177 Check EXV (EVXV) Superheat • ACTIVATION: With the unit running in Test 11, after the control system closes the EVXV to 0%, evaporator pressure fails to drop by 20 psig (1.36 bar) or fails to go below 0 psig / bar OR the EVXV appears not to be opening to the full capacity position.
  • Page 208 P00180 Check Suction Modulation Valve • ACTIVATION: With the unit running in Pretrip Test #10, after the microprocessor attempts to close CSMV, the suction pressure fails to drop below 0 psig (0 bar). • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL IN TEST 10”. •...
  • Page 209 P00187 Check Heater 1 Circuit This device is checked twice in Pretrip - once in Test 2 and again in Test 7. • ACTIVATION TEST 2: (unit not running): Normal draw for the 1HTCON1 coil is 0.05 to 1.0 Amps (12 VDC).
  • Page 210 P00187 Check Heater 1 Circuit (continued) 460 VAC Circuit 6. Check Amp Draw of 1HTCON1 Heater Circuit a. With the unit running and calling for Heat, use a clamp on ammeter to check the current draw of all three legs. Must be within range shown in Section 2.10 for all three legs.
  • Page 211 P00188 Check Heater 2 Circuit This device is checked twice in Pretrip - once in Test 2 and again in Test 7. • ACTIVATION TEST 2: (unit not running): Normal draw for the 1HTCON2 contactor coil is 0.05 to 2.0 Amps (12 VDC).
  • Page 212 P00188 Check Heater 2 Circuit (continued) 460 VAC Circuit 6. Check Amp Draw of 1HTCON2 Heater Circuit a. With the unit running and calling for Heat, use a clamp on ammeter to check the current draw of all three legs. Must be within range shown in Section 2.10 for all three legs.
  • Page 213 P00189 Check Evaporator Fan Motor This device is checked twice in Pretrip - once in Test 2 and again in Test 9. • ACTIVATION TEST 2: (unit not running): Normal draw for the 1EVCON contactor coil is 0.05 to 2.0 Amps (12 VDC).
  • Page 214 P00189 Check Evaporator Fan Motor (continued) 460 VAC Circuit 5. Check Amp Draw of 1EVCON Evaporator Fan Motor Circuit a. With the unit running in either HEAT or COOL, use a clamp on ammeter to check the current draw of all three legs.
  • Page 215 P00190 Check Condenser Fan Motor • ACTIVATION: Normal draw for the condenser fan motors is 0.8 to 3.5 Amps (460 VAC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
  • Page 216 P00206 Check Condenser Fan Circuit • ACTIVATION: Normal draw for the CDCON contactor coil is 0.05 to 2.0 Amps (12 VDC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
  • Page 217 P00207 Check Compressor Contact Circuit • ACTIVATION: Normal draw for the CCON contactor coil is 0.0 to 1.0 Amps (12 VDC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
  • Page 218 P00208 Check Generator Contact Circuit • ACTIVATION: Normal draw for the GENCON coil is 0.0 to 1.0 Amps (12 VDC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
  • Page 219 P00209 Check Standby Contact Circuit • ACTIVATION: Normal amps for the PSCON or PSCON2 contactor coils 0.0 to 1.0 Amps (12 VDC). The circuit(s) test outside this range. (During this test either PSCON or PSCON2 will be tested depending on the phase reversal module.) •...
  • Page 220 P00217 Check Fuel Pump • ACTIVATION: Normal draw for the fuel pump is 0.9 to 2.0 Amps (12 VDC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
  • Page 221 00223 Engine Maintenance Due • ACTIVATION: The Engine Maintenance Hour Meter time has expired. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset using the display mounted keys. Corrective Actions: 1.
  • Page 222 00225 General Maintenance Due • ACTIVATION: The General Maintenance Hour Meter time has expired. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset via keypad. Corrective Actions: 1.
  • Page 223 00227 Service Soon - PM #2 Due • ACTIVATION: The Maintenance Hour Meter #2 time has expired. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset via keypad. Corrective Actions: 1.
  • Page 224 00229 Service Soon - PM #4 Due • ACTIVATION: The Maintenance Hour Meter #4 time has expired. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset via keypad. Corrective Actions: 1.
  • Page 225 Enter correct Model Number. Check Model Number on Nameplate. Select the correct model number in the “MODEL NUMBER” Configuration. If correct model number is not found, Install (or have Carrier Transicold dealer install) latest software revision. 2. Reset Microprocessor a.
  • Page 226 00237 Function Parameters Error • ACTIVATION: There is an error in one or more of the Functional Parameters that are stored in the main microprocessor memory. • UNIT CONTROL: Engine and Electric Operation: Incorrect Functional Parameter(s) will be automatically set for default value. •...
  • Page 227 00238 Configurations Error • ACTIVATION: There is an error in the Configuration settings that are stored in the main microprocessor memory. • UNIT CONTROL: Engine and Electric Operation: Incorrect Configuration(s) will be automatically set for default value. • RESET CONDITION: Auto reset when valid Configuration(s) are entered, or alarm may be manually reset by turning the unit off, then back on again NOTE Follow the steps below until a problem is found.
  • Page 228 Continue with the steps below as necessary. Corrective Actions: 1. Check Microprocessor Software Revision - Check microprocessor software Unit should have the soft- ware upgraded to the latest version, provided for Carrier Transicold dealers on the Carrier SolutionsCen- ter. 2. Reset Microprocessor a.
  • Page 229 00248 Configuration Mode / HP2 Error • ACTIVATION: EEPROM Configuration is out of range. • UNIT CONTROL: Engine and Electric Operation: Shutdown and alarm. • RESET CONDITION: Auto reset only when valid info is entered. NOTE Follow the steps below until a problem is found. Once a repair or correction has been made, clear the alarm(s).
  • Page 230 Corrective Actions: 1. Check Software Revision - Check microprocessor software Unit should have the software upgraded to the latest version, provided for Carrier Transicold dealers on the Carrier SolutionsCenter. 2. Reset Microprocessor a. Place the START/RUN-OFF switch in the OFF position. Disconnect negative battery cable or unplug PM connector.
  • Page 231 02001 Rear Panel Shutdown • ACTIVATION: 'UNIT OFF' soft key is pressed from Remote Panel. • UNIT CONTROL: Engine and Electric Operation: Shutdown and alarm. • RESET CONDITION: Auto reset when all module software versions are compatible. Or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 232 02002 Low Discharge Superheat • ACTIVATION: Compressor discharge superheat is less than 68°F (20°C) after three minutes of engaging the Econ SH offset logic, the compressor is on, and Evaporator Flood back control hasn’t been active in the last three minutes and suction superheat is greater than 40°F (4.4°C) NOTE This alarm can be caused by a stuck open ECXV or LIV, causing too much liquid to be sent into the compressor at the economizer connection.
  • Page 233 Once Emergency Bypass mode has been activated, the unit will operate normally for 24 hours, a countdown timer will be shown on the display. This 24-hour window of operation will keep the load safe, and provide enough time to contact the nearest Carrier Transicold Service Center for repair of the unit.
  • Page 234 04002 High Economizer Superheat • ACTIVATION: With unit running in economized mode for 15 minutes, ECXV open greater than 99% for five minutes, and a box temperature less than 14°F (-10°C); economizer superheat is above 74°F (23°C) for five minutes. NOTE This alarm can be caused by a stuck ECXV, not letting enough liquid into the economizer circuit.
  • Page 235 04004 No Setpoint Change • ACTIVATION: Operator failed to press '=' key after entering a setpoint change • UNIT CONTROL: Alarm only. • RESET CONDITION: Setpoint change entered correctly. NOTE Follow the steps below until a problem is found. Once a repair or correction has been made, clear the alarm(s).
  • Page 236 05010 Check Standby Contactor 2 (PSCON2) • ACTIVATION: Standby contactor one (PSCON2) circuit is shorted or open. • UNIT CONTROL: Engine Operation: Alarm condition only. Electric Operation: Required Shutdown • RESET CONDITION: 15 Minutes have elapsed since activation or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 237 05012 Check ECU Power Circuit NOTE When operation of the engine is required the main microprocessor will provide a signal from terminal 3MM-9. This signal has been referred to as the “run relay”, based on pre-APX control systems that had an actual relay in place. Whenever the term “run relay” is used in APX control system discussion, it is referring to the engine run output from 3MM-9 to the ECU at terminal ENCU-44.
  • Page 238 05014 Check Starter Solenoid Circuit • ACTIVATION: A problem has been detected in the starter solenoid coil (SS) circuit. If this alarm is activated while the control system is calling for SS to be energized, the circuit is detected shorted. If this alarm occurs at any other time, the circuit is detected open.
  • Page 239 05016 Check Remote Amber Light • ACTIVATION: A problem has been detected in the alarm (amber) light circuit (LB). If this alarm is activated while the circuit is energized, the circuit is detected shorted. If this alarm is activated at any other time, the circuit is detected open.
  • Page 240 05017 Check Engine Preheat Enable Circuit • ACTIVATION: A problem has been detected in the engine preheat enable circuit (EPHT). If this alarm is activated when the circuit is energized, the circuit is detected shorted. If this alarm is activated at any other time, the circuit is detected open.
  • Page 241 05019 Check CDCON2 Coil • ACTIVATION: Condenser fan motor contactor (CDCON2) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 242 05020 Check Heater Contactor 1 • ACTIVATION: Heater Contactor 1 (1HTCON1) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 243 05021 Check Heater Contactor 2 • ACTIVATION: Heater Contactor 2 (1HTCON2) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 244 05028 PM Fuse 2 Alarm • Trigger-on Condition: TPC Reports Fuse Status Bad AND SIO Comm Fail Alarm 25800 is active for 15 seconds. • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found.
  • Page 245 • Trigger-on Condition: TPC Reports Fuse Status Bad • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found. Once a repair or correction has been made, the active alarm should clear itself (refer to reset condition above).
  • Page 246 05033 Power Enabled Coil Open Circuited • Trigger-on Condition: Power Enable Control is ordered OFF AND PM reports Output Error on PER channel for six sec- onds. • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found.
  • Page 247 06000 Condenser Motor 2 Overheated • ACTIVATION: The condenser fan motor Internal Protectors (IP-CDM2) circuit is open. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still energized. • RESET CONDITION: Auto Reset when motor overload input is within limits, or change to engine Operation, or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 248 07000 Economizer Temperature Sensor • ACTIVATION: Economizer temperature sensor is out of range • UNIT CONTROL: Engine and Electric Operation: Alarm only. Economizer forced to STANDARD mode when alarm is active. • RESET CONDITION: Auto reset or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 249 07006 Suction Pressure Sensor • ACTIVATION: Suction pressure sensor is out of range. If Economizer pressure < or = (Suction pressure - 10) for 10 seconds and suction pressure is > than 40 psig and < than 60 psig with the compressor running. •...
  • Page 250 07009 Return Air Sensor Out of Range (RAT and RAT2) • ACTIVATION: A Redundant Return Air Temperature Sensor (RAT2) is installed, configured, and it differs from RAT by 2°C for 10 consecutive one minute samples or for 25 of the last 30 samples. •...
  • Page 251 20100 No Comm From Micro to Display NOTE This alarm will be available in the inactive alarm list and download only. It is an indication that an intermittent failure is occurring, causing a break in the circuit sufficient to activate the alarm. •...
  • Page 252 20101 No Comm From Micro to Remote Display • ACTIVATION: If alarm 21100 No Comm from Any Board to Main Micro is not active, and the number of remote panels installed is configured as 1, and no sync responses have been received from the Remote Panel Module for 10 seconds.
  • Page 253 21100 No Comm from Any Board to Main Micro NOTE This alarm will be available in the inactive alarm list and download only. It is an indication that an intermittent problem has occurred and a careful diagnosis is required. • ACTIVATION: Main microprocessor cannot communicate with any modules over the CAN bus.
  • Page 254 22401 MSM-1 in Low Sensor Voltage The voltage supply for the sensors on the MSM is below the low voltage limit 4.5V • ACTIVATION: • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto reset when voltage is correct, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
  • Page 255 22402 MSM-1 in High Sensor Voltage • ACTIVATION: greater than 5.5 VDC The voltage supply for the sensors on the MSM is • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto reset when sensor voltage is correct, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
  • Page 256 23800 PM CAN Fail • ACTIVATION: No response from Power Module. • UNIT CONTROL: Shutdown all modules except the display and alarm. (The alarm will only display if the dis- play module is communicating.) Main microprocessor status LED will illuminate steady green (not pulsing).
  • Page 257 24103 CCB Lost Configuration • ACTIVATION: If alarm 21100 No Comm from Any Board to Main Micro is not active, and unit is not starting in diesel. No sync responses have been received from the CCB2 Module for 10 seconds. •...
  • Page 258 24201 Sensor Input Voltage Low CCB2 • ACTIVATION: The Voltage Supply for the Sensors on the CCB2 is below the low voltage limit 4.5V • UNIT CONTROL: Engine and Electric Operation: Alarm Only. • RESET CONDITION: The Voltage Supply for Sensors on the CCB2 is above low voltage limit 4.5V NOTE Follow the steps below until a problem is found.
  • Page 259 25500 Tri-Stepper CAN Fail • ACTIVATION: 1-1MSM cannot communicate with 1-2MSM over the CAN bus. Engine and Electric Operation: Shut down and alarm. The stepper valve • UNIT CONTROL: module status LED may be on steady green (not pulsing) or red. Auto reset when CAN communication is restored, alarm reset or alarm •...
  • Page 260 25502 Tri-Stepper Input Voltage • ACTIVATION: The stepper input voltage is reported out of valid range (9V to 17V) by MSM for three seconds as timed at stepper board. • UNIT CONTROL: Engine and Electric Operation: Alarm only. Steppers on board with problem disabled (Powered OFF) until good power reported from Stepper Board at which point they are re-enabled.
  • Page 261 25201 Over Current STP2 • ACTIVATION: The stepper current is reported to be too high by stepper board 2 (Indicated by Stepper Output Voltage < 5V) for 3 Seconds as timed at stepper board. • UNIT CONTROL: Engine and Electric Operation: Alarm only. Steppers on board with problem disabled (Powered OFF) until good power reported from Stepper Board at which point they are re-enabled.
  • Page 262 26101 Engine Over Heat ECU • ACTIVATION: Engine water temperature > or = 262°F (128° C) • UNIT CONTROL: Engine Operation: Alarm only. Electric Operation: Will not activate in electric operation. • RESET CONDITION: If trigger on message not received for five seconds, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
  • Page 263 26104 Battery Voltage High ECU • ACTIVATION: ECU recognition of battery voltage is above 18 V. • UNIT CONTROL: Engine Operation: Required Shutdown. Electric Operation: Will not activate in electric operation. • RESET CONDITION: If trigger on message not received for five seconds, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
  • Page 264 26106 Sensor Supply Voltage 1 Low • ACTIVATION: Voltage to sensor is below 4.00 V • UNIT CONTROL: Engine Operation: Required Shutdown. Electric Operation: Will not activate in electric operation. • RESET CONDITION: If trigger on message not received for five seconds, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
  • Page 265 26109 Actuator Abnormal ECU • ACTIVATION: Actuator current >3.0A or < 80mA • UNIT CONTROL: Engine Operation: Required Shutdown. Electric Operation: Will not activate in electric operation. • RESET CONDITION: If trigger on message not received for five seconds, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
  • Page 266 26110 Engine Speed Sensor Abnormal • ACTIVATION: Engine speed = 0 min-1 (rpm) • UNIT CONTROL: Engine Operation: Required Shutdown. Electric Operation: Will not activate in electric operation. • RESET CONDITION: If trigger on message not received for five seconds, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
  • Page 267 27200 No Comm from Micro to Optional Comm Module • ACTIVATION: If alarm 21100 No Comm from Any Board to Main Micro is not active, number of Comm Modules Configuration is set to 1, and no sync responses have been received from the Comm Module for 10 seconds.
  • Page 268 28002 No Comm from Door Switch • ACTIVATION: The door switch configuration is configured as 3rd Party and no communications have been received for 15 minutes • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Communications have been received from the door switch. NOTE Follow the steps below until a problem is found.
  • Page 269 28004 Invalid REMS1 28005 Invalid REMS2 • ACTIVATION: The Remote Switch configuration is configured as 3rd Party and data received from the switch is invalid. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Valid data received from remote switch. NOTE Follow the steps below until a problem is found.
  • Page 270 62-12259 7–132...
  • Page 271 Removing Charge R-452A. Unit uses R-452A refrigerant and POE oil. The use of inert gas brazing procedures is mandatory for all Carrier Transicold refrigeration units; otherwise compressor failure will occur. for more information Refer to Technical Procedure 98-50553-00 Inert Gas Brazing.
  • Page 272 Cooling System 1. Check coolant change interval (refer to Section c. of this Section 8.5.12 table). If replacement is not required, check antifreeze concentration using a refractometer, (Carrier Transicold P/N 07-00435-00). 2. Clean condenser/radiator surfaces Section 8.5.12 3. Check water pump Check 4.
  • Page 273 Table 8–1 Maintenance Schedule System Operation Reference Section Unit 1. Check unit mounting bolts Check 2. Check engine and compressor mounting bolts Engine Manual 3. Check door latches and hinges Section 8.4.4 4. Check condition of water pump belt Check Refrigeration 1.
  • Page 274 8.4.1 AutoFresh Fresh Air Exchange Figure 8.1 Automatic Fresh Air Exchange 5. Inlet Connection 1. Cover 6. Outlet Connection 2. Gasket 7. Solenoid Hardware 3. Housing 8. Cover Hardware 4. Solenoid 8.4.1.1 Cover and/or Cover Gaskets Replacement 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and disabling the starter.
  • Page 275 8.4.2 Remove Grille Insert Figure 8.2 Grille Insert Removal and Door Latch Maintenance NOTE If difficulty is experienced when attempting to remove the grille mounting bolts, the grille may be removed with the surround attached to allow access to the mounting clips. (Refer Section 8.4.3.) 1.
  • Page 276 8.4.4 Door Latch Maintenance and Cable Replacement 8.4.4.1 Door Latch Maintenance Proper maintenance is important for smooth clean and lubricated, CTD recommends the operation of the latch assemblies and the latch use of a degreasing cleaner and LPS 2 lubri- pins that are mounted on the unit’s frame (See cant.
  • Page 277 Engine and Engine Related Systems Service Procedures for servicing the engine, fuel system, engine cooling system and air cleaner are provided in the following sub-paragraphs. 8.5.1 Fuel System The fuel system consists of the fuel tank, mechanical fuel pump, fuel filter, fuel injection pump, the injectors and interconnecting tubing.
  • Page 278 8.5.2 Priming the Fuel Pump System 1. Turn on the SROS switch and make sure the electric fuel pump bowl is full of fuel. NOTE If the fuel bowl on the electric pump is not full, turn off the SROS switch to turn off fuel pump, remove electric fuel pump bowl and fill (from clean fuel source) as needed 2.
  • Page 279 8.5.3 Electric Fuel Pump Screen Check/Replace 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and disabling the starter. Disconnect the high voltage source and lockout/tagout the receptacle. 2. Remove bowl, (Figure 8.7).
  • Page 280 8.5.5 Fuel Level Sensor (FLS) Check An optional fuel level sensor (Figure 8.8) supplies an input signal to the control system as to the percent of fuel remaining in the fuel tank. The control system will activate alarm 00001 Low Level Fuel Warning when the level reaches 15%, and (if configured to do so) shuts the engine down when the level reaches 10%.
  • Page 281 8.5.6 Fuel Heater The optional fuel heater (Figure 8.5) applies heat to fuel in the fuel filter. Heating the fuel dissolves/prevents paraf- fin wax crystals (and ice) that form when diesel fuel is chilled thus enabling the water separator to work more effi- ciently and to prevent the filter from plugging with wax and/or ice crystals.
  • Page 282 8.5.7.3 Change Engine Oil Filter 1. If not continuing from preceding step, warm up the engine and then stop it by placing the STOP/ RUN-OFF switch in the OFF position. Ensure the unit will not start automatically by disabling the starter. Disconnect the high voltage source and lockout/tagout the receptacle.
  • Page 283 Figure 8.11 Engine Control System Engine Fuel Injectors (ENINJ1-4) ENINJ3 ENINJ2 ENINJ4 Exhaust Manifold ENINJ1 Engine Speed Sensor (ENSSN) Intake Manifold Fuel Return Engine Control Unit (ENCU) Engine Fuel Rail Pressure (ENFRP) Engine Camshaft Sensor (ENCS) Fuel Primer Plunger Fuel Inlet Engine Fuel Control Valve (ENFCV) •...
  • Page 284 8.5.11 Cooling System 8.5.11.1 Cleaning and Flushing Air flows through the condenser and then the radiator. The cooling surfaces must be clean and the interior of the radiator must be clean for adequate cooling. Use only red Extended Life Coolant, Nitrite Free (ELC-NF) that is premixed to a 50/50 concentration of coolant/water.
  • Page 285 8.5.11.2 Radiator Replacement 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and removing the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 2. Drain coolant into a suitable container by removing coolant bottle cap and the engine drain plug. 3.
  • Page 286 8.5.12 Water Pump V-Belt Replacement WARNING Beware of moving belts and belt-driven components. When working with belts, beware of pinch points. Figure 8.13 Water Pump V-Belt 1. Rain Shield 2. Pivot Bolt 3. Alternator 4. Adjustment Bolt 5. Water Pump 6.
  • Page 287 8.5.13 Breather The breather consists of a breather valve, diaphragm and breather pipe. The breather is fitted with a diaphragm type valve and mitigates pressure changes in the crankcase. Figure 8.14 Breather 8–17 62-12259...
  • Page 288 Refrigerant System Service Service of refrigerant system equipment, refrigerant charge, leak checking and evacuation. Figure 8.15 Refrigeration System Service 1. Vacuum Pump 11. Economizer 2. Vacuum Indicator 12. Evaporator 3. Refrigerant Cylinder 13. Evaporator Expansion Valve 4. Refrigerant Recovery Unit 14.
  • Page 289 8.6.1 Refrigerant System Service Connections To service the refrigerant system, service equipment is connected at the compressor discharge service valve, compressor suction service valve, and/or the liquid line service valve. When connecting to a valve, backseat the valve (turn counterclockwise) to close off gauge connection and attach service line to the valve.
  • Page 290 8.6.3 Removing the Charge WARNING R-452A refrigerant is an A1 non-flammable refrigerant blend which includes some mildly flammable constituents. As such, please follow all proper service and maintenance procedures. Ensure that proper evacuation procedure is strictly followed before performing any “hot work,” including, but not limited to brazing or welding, on these units to prevent flare- up of residual refrigerant.
  • Page 291 Figure 8.16 Four Port Manifold Gauge Option 8.6.3.1 Unit Connections Figure 8.17 Unit Connections • Connect the manifold gauge set to the unit (refer to Figure 8.16) • Hose A to low-pressure compressor service valve • Hose B to vacuum pump •...
  • Page 292 11. Open the hose B service valve and wait for one minute. 12. Check the manifold gauge values. Readings must be at the lowest and most stable. 13. Close hose B service valve. 14. Stop the vacuum pump. 15. Disconnect the vacuum pump. The manifold gauge (I) is installed Before continuing with the next steps: •...
  • Page 293 10. Disconnect the recovery machine and dispose of the R-452A recovery bottle according to local regulation. End of recovery procedure 11. Purge with Nitrogen. for more information about nitrogen instruction, refer to Carrier Transicold document #98-60068-00 (Brazing Instructions). 8–23 62-12259...
  • Page 294 8.6.3.5 Pump Down the Low Side Components on the low side of the refrigeration system (the filter drier, EVXV, ECXV, evaporator coil, CSMV, heat exchanger, suction line etc.) may be serviced or replaced without having to completely remove the refrigerant charge from the system by pumping down the low side, and temporarily storing the refrigerant in the condenser and receiver.
  • Page 295 8.6.4 Adjusting Charge Level Adjustment of the charge level may be required when there has been a leak or the system was not correctly charged during a previous service. 1. Check charge level by performing the procedures outlined in Section 8.6.2.1.
  • Page 296 8.6.6 Leak Checking WARNING Never use air or gases containing oxygen for leak testing or operating refrigerant compressors. Pressurized mixtures of air or gases containing oxygen can lead to explosion. The condition that the system may be in when leak checking is required include; when the system is charged, when the system is without charge, when the low side has been pumped down and when only the compressor is to be leak checked.
  • Page 297 5. Connect a cylinder of dry nitrogen. Use the dry nitrogen to increase the pressure as necessary 20 to 150 psig (1.4 to 10.2 bar) to detect the leak. The larger the leak the less pressure is required. The smaller the leak, the greater pressure is required.
  • Page 298 9. If any leaks are found they must be repaired before proceeding. 10. Repeat steps 4 - 9 as necessary. 11. Disconnect the nitrogen cylinder. Evacuate the low side of the system after all leaks are repaired. (Refer to Section 8.6.7.) 8.6.6.4 Leak Checking Compressor The compressor connections, suction, discharge, and economizer, must be leak checked once the com-...
  • Page 299 • Essential tools to properly evacuate any system include a good vacuum pump (5 cfm/8m H volume dis- placement, Carrier Transicold P/N 07-00176-11) and a good vacuum indicator such as a digital vacuum gauge (micrometer). Carrier Transicold P/N 07-00414-00. •...
  • Page 300 8.6.7.2 Evacuation of the Low Side 1. Evacuate only after a low side leak check. (Refer to Section 8.6.6) 2. If possible keep the temperature of the major components (condenser, evaporator, compressor and receiver) above 60°F (15.6°C) to speed evaporation of moisture. If the temperature is lower than 60°F (15.6°C), ice might form before moisture removal is complete.
  • Page 301 Compressor Service WARNING Before removal of the compressor, relieve the internal pressure by very carefully loosening the couplings to break the seal. The scroll compressor achieves low suction pressure very quickly. Do not use the compressor to evacuate the system below 0 psig. Never operate the compressor with the suction or discharge service valves closed (frontseated).
  • Page 302 8.7.1 Remove and Replace the Compressor: 1. Remove refrigerant charge. Refer to Section 8.6.2 2. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and removing the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 3.
  • Page 303 8. Rotate compressor to gain access to the power 9. Remove (slide out) the old compressor from the plug. Remove the power plug retaining clip (see unit and slide the new compressor into the unit. Figure 8.20) by pulling out gently on the left side NOTE (to clear the shorter left locking tab and rotate the right locking tab) and then slide up and off...
  • Page 304 The scroll compressor achieves low suction pressure very quickly. Do not use the compressor to evacuate the system below 0 psig. Never operate the compressor with the suction or discharge service valves closed (frontseated). Internal damage will result from operating the compressor in a deep vacuum.
  • Page 305 Unit uses R-452A and POE oil. The use of inert gas brazing procedures is mandatory for all Carrier Transicold refrigeration units; otherwise compressor failure will occur. for more information Refer to Technical Procedure 98-50553-00 Inert Gas Brazing. 5. Unbraze refrigerant lines from condenser coil.
  • Page 306 Figure 8.21 Condenser/Radiator Assembly 1. Bracket 13. Gasket (Subcooler) 2. Bracket 14. Bracket 3. Condenser Coil 15. Bracket 4. Gasket 16. Bracket 5. Gasket 17. Bracket 6. Gasket 18. Radiator Coil 7. Gasket 19. Bracket 8. Gasket 20. Bracket 9. Screw, Captive Washer 21.
  • Page 307 8.8.3 Filter Drier 8.8.3.1 Check Filter Drier The unit must be running in cool for this test. Check for a restricted or plugged filter drier by feeling the liq- uid line inlet and outlet connections of the drier cartridge. If the outlet side feels cooler than the inlet side, then the filter-drier should be replaced.
  • Page 308 Figure 8.22 Economizer Section 1. Liquid Outlet Line (to EVXV) 2. Liquid Inlet Line (From Drier) 3. Economizer Heat Exchanger 4. Economizer Outlet Pressure Transducer (ECOP) 5. Economizer Expansion Valve (ECXV) 6. Economizer Outlet Temperature Sensor (ECOT) 7. Compressor Economizer Connection 8.
  • Page 309 8.8.6 Stepper Test Harness A stepper test harness (Carrier Transicold P/N 07−00515) is available for testing the compressor suction modula- tion valve (CSMV) and evaporator expansion valve (EVXV). The test harness is installed by disconnecting the 2MSM connector at the MSM module and plugging the C1 con-...
  • Page 310 The valve stepper motor may be tested using a stepper motor drive tester or ohmmeter. 1. To test with a stepper motor drive tester (Carrier Transicold P/N 07-00375-00SV), connect the 4-pin test cable supplied with the tester to the valve connector, refer to Figure 8.25, and the cable wires to the tester in...
  • Page 311 8. Adjust the suction service valve so that the approximate temperature is maintained. for perishable loads, it is recommended that the adjustment be made so that available capacity is slightly larger than the load, the unit will cycle OFF and ON. 9.
  • Page 312 10 minutes. During this time the voltage being sent to the EVXV can be measured. The valve stepper motor may be tested using a stepper motor drive tester or ohmmeter. 1. To test with a stepper motor drive tester (Carrier Transicold P/N 07-00375-00SV), connect the 5-pin test cable to the valve connector (see Figure 8.27), and the cable wires to the tester in accordance with wire and...
  • Page 313 Figure 8.27 Evaporator Expansion Valve Pins PIN A (ORANGE) PIN B (RED) COMMON (+12VDC) PIN D (BLACK) PIN C (YELLOW) PIN E (GRAY) 8.8.8.3 Diagnostics - Valve If the valve failed Pretrip and passed the preceding diagnostic testing, this is an indication that the valve internal mechanism is damaged and the piston and motor assembly is to be replaced.
  • Page 314 8.8.8.4 Expansion Valve and Strainer Replacement 1. Pump down the low side. Refer to Section 8.6.2. 2. Remove coil and unbraze valve. Clean all tube stubs so new valve fits on easily. 3. Verify the strainer is in place. 4. Use a wet rag to keep the replacement valve cool and braze in place. 5.
  • Page 315 Figure 8.28 Solenoid Valve 1. Locking Nut 2. Upper O-Ring 3. Threaded Collar 4. Coil 5. Lower O-Ring 6. Armature Tube 7. Internal O-Ring 8. Spring 9. Armature 8.8.10 High Pressure Switch 8.8.10.1 Checking High Pressure Switch WARNING Do not use a nitrogen cylinder without a pressure regulator. Cylinder pressure is approximately 2350 PSIG (160 bar).
  • Page 316 4. Set nitrogen pressure regulator higher than open setting for switch being tested. for pressure switch settings refer to Section 2.9. 5. Close valve on cylinder and open bleed-off valve. 6. Open cylinder valve. Slowly close bleed-off valve and increase pressure until the switch opens. If light is used, light will go out and if an ohmmeter is used, the meter will indicate open.
  • Page 317 7. Attach an ohmmeter to the air switch electrical contacts to check switch action. NOTE Use a hand aspirator (Carrier Transicold P/N 07-00177-01), since blowing into tube by mouth may cause an incorrect reading. 8. With the gauge reading at zero, apply air pressure very slowly to the air switch. An ohmmeter will indicate continuity when switch actuates.
  • Page 318 10. Repeat checkout procedure until switch actuates at correct gauge reading. 11. After switch is adjusted, place a small amount of paint or fingernail polish on the adjusting screw so that vibration will not change switch setting. 62-12259 8–48...
  • Page 319 Electrical System Component Service 8.9.1 Microprocessor Stepper Module (MSM) For complete Microprocessor Stepper Module replacement instructions refer to Section 5.5.3 8.9.2 Power Module (PM) NOTE The buzzer, buzzer harness, fuses, door, door seal, hinge pin, door screw (with retainer) and relays may be purchased separately and do not require complete module replacement.
  • Page 320 9. The component legend sticker is to be located inside the PM door. Install the correct sticker (packaged with the replacement PM) for this unit inside the replacement PM. The replacement PM is populated at the factory with the standard fuses and relays. Additional fuses and relays may be required for this application (refer to Figure 2.5) transfer the required fuses and relays from the original PM to the replacement PM as required.
  • Page 321 2. Attach a grounded wrist strap (CTD P/N 07- Figure 8.32 Location of Cover Ground Cable 00304-00) and ground it to a good unit frame ground. 3. Remove the four control box cover bolts, then remove the cover ground cable. Refer to Fig- 8.32.
  • Page 322 6. Disconnect L1, L2, and L3 (on CCON). Refer to 7. The panel will drop down, allowing access to Figure 8.35 the CCB board. Refer to Figure 8.36 Figure 8.35 Disconnect L1, L2, L3 Figure 8.36 CCB Exposed 8. Disconnect the connector from the top of the CCB.Refer to Figure 8.37 Figure 8.37 Removing Connector NOTE...
  • Page 323 9. Slide the CCB towards the front of the box until • Nylock nut the panel clears the lower studs, then tip the • Nylon washer CCB out of the control box. • 10. Remove the four nuts and washers that secure •...
  • Page 324 Megohmmeter Test Procedure Check of the electrical insulation integrity and connections using a resistance tester (commonly known as a meg- ohmmeter), such as Carrier Transicold P/N 07-00481-00, that can be set to 1000V. CAUTION Before connecting a megohmmeter, place the Main Power switch in the OFF position.
  • Page 325 8.9.6 Light Bar The light bar may be tested using a 12 VDC source. To test the light bar: 1. Ensure the unit will not start automatically by Figure 8.39 Light Bar Connections placing the START/RUN-OFF switch in the OFF position and removing the negative battery cable.
  • Page 326 5. Check wiring between CT and pins CCB10, CCB-12, CCB-31, and CCB-34 as required. 6. If a problem with the current sensors is suspected, check sensor output. Current sensor inputs to the module are rated at 16.7mV per Amp. for every Amp that is read at the wires coming from the GENCON or PSCON T1, T2 and T3 terminals with an amp meter, there should be a corresponding voltage reading on the blue, brown and orange wires to the black wire.
  • Page 327 8.9.9 Evaporator Blower and Motor NOTE Blower motor bearings are factory sealed and do not require additional grease. 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and removing the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 2.
  • Page 328 Figure 8.41 Evaporator Blower Assembly 1. Access Panel 5. Blower Assembly 2. Grille 6. Motor 3. Nozzle 7. Stator 4. Supply Air Sensor 8. Mounting Brackets 9. Support Bracket 62-12259 8–58...
  • Page 329 8.9.10 Condenser Fan Assemblies 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and removing the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 2. Disconnect the motor electrical connector. Note motor is assembled to allow routing of the wiring down the lower right hand leg of the welded support.
  • Page 330 Figure 8.42 Condenser Fan Assembly 8. 9. 8. 9. 4 PLCS. 1. Condenser Fan Assembly 6. Fan Motor and Assembly 2. Divider 7. Motor 3. Shroud 8. Welded Support 4. Frame 9. Wire routing 5. Fan 62-12259 8–60...
  • Page 331 8.9.11 Battery Charger (BTYC) NOTE A battery of known good condition must be connected to the charger before doing the following test. The charger operates only when the input voltage is between 275 VAC and 640VAC. If either limit is exceeded it will not function.
  • Page 332 8.9.12.2 Generator Replacement Service procedures for replacement of the back of the engine. The procedures that follow generator (see Figure 8.47) involve removal of cover the general steps required. Minor modifi- components as required to swing the unidrive cations of the procedures may be required assembly out, from the generator end, suffi- depending on the routing of wires within the cient to allow removal of the generator from the...
  • Page 333 8.9.12.3 Generator Removal 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and removing the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 2. Remove the front roadside and curbside doors. 3.
  • Page 334 Figure 8.45 Support Tool Secured, Bottom View To prepare for removal of the rotor bolts, install the flywheel locking tool (Carrier P/N 07-60083-00, see Figure 8.43, Figure 8.46). 16. Swing the unidrive assembly out sufficient to remove the generator. 17. Remove the tape from the generator splice connections. When cutting the generator splices, cut on the harness side, leaving just enough harness wire so that the wiring remaining on the old generator may be viewed later to determine color combinations required for reassembly.
  • Page 335 NOTE Do not remove the shim from the replacement generator, the replacement generator shim must remain in place until the generator is installed. 21. Install the shipping sleeve (Carrier P/N 54-00656-23) between the rotor and stator, see Figure 8.43. 22. Note (see Figure 8.47, Figure...
  • Page 336 24. Attach a lifting mechanism to the lifting tool. Figure 8.49 Generator Lifting Tool Installation Take the weight off the generator and slide it back away from the engine sufficient to rotate the lifting tool lock (see Figure 8.49) in position. Once the lock is in position, remove the generator from the unit.
  • Page 337 8.9.12.4 Generator Assembly Procedure 1. Verify the existence and condition of the two original dowel pins in the bell housing. (See Figure 8.43, Carrier P/N 34-06329-00 - not included in the kit. If replacement is required, the pins are to be installed with the chamfer facing out.
  • Page 338 Figure 8.50 Generator Wires NOTE Green wire not shown Figure 8.51 Generator/Harness Wire Connections HARNESS GENERATOR GENCON L1/GEN VB (black) GREY (VB) GENCON L2/GEN UA (white) BLACK (UA) GENCON L3/GEN WC (red) BROWN (WC) GREEN (W/Red Tape) GREEN 12. Complete wire installation by gathering the four wires and covering with tape (Carrier P/N 02-00137-10). Refasten wiring in place to the frame mount.
  • Page 339 8.9.13 Compressor Discharge Temperature Sensor Values for testing the sensor, in accordance with standard procedures, are provided in Table 8–6. To replace the compressor discharge temperature sensor (see Figure 8.53) do the following: 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and removing the negative battery cable.
  • Page 340 Table 8–5 Sensor Resistance Sensors AAT, RAT, SAT, ENCT, DTT, CST, EVOT, REMSN 1, 2, & 3 °F °C Ohms °F °C Ohms °F °C Ohms °F °C Ohms 336,500 -7.8 49,060 24.4 10,250 56.7 2,809 -38.9 312,600 -6.7 46,230 25.6 9,760 57.8...
  • Page 341 Table 8–6 Sensor Resistance (CDTS) °C °F Ohms °C °F Ohms °C °F Ohms °C °F Ohms 2,889,600 64.4 117,656 168.8 12,306 273.2 2,335 -36.4 2,532,872 68.0 107,439 172.4 11,524 276.8 2,223 -32.8 2,225,078 71.6 98,194 176.0 10,793 280.4 2,119 -29.2 1,957,446 75.2...
  • Page 342 Refer to the following two tables for Temperature Pressure Chart for R-452A refrigerant. Table 8–7 R-452A Temperature Pressure Chart Temperature Liquid Vapor Temperature Liquid Vapor °F °C psig psig °F °C psig psig -29.2 10.4 0.72 0.45 144.6 9.97 128.6 8.87 -25.6 12.7...
  • Page 343 Table 8–8 Compressor Discharge Table 8–9 Compressor Suction Pressure Transducer Pressure/Voltage Pressure Transducer Pressure/Voltage PSIG Voltage PSIG Voltage -0.7 -5.0 -0.3 10.0 15.0 20.0 25.0 10.2 11.9 13.6 15.3 17.0 18.7 20.4 22.1 23.8 25.5 27.2 30.6 Table 8–10 Current Sensor Millivolt Output vs Current Sensed Amps MV Output Amps...
  • Page 344 62-12259 8–74...
  • Page 345 SECTION 9 Unit Troubleshooting Under no circumstances should anyone attempt to repair sealed module internal components. Should a problem develop with these components, contact your nearest Carrier Transicold dealer for replacement. NOTE Run a Pretrip and check all active alarms before continuing with troubleshooting.
  • Page 346 Indication/Trouble Possible Causes Action / Reference 9.1.2 Engine Starts Then Stops Fuel supply restricted Check No fuel in tank Check Leak in fuel system Check Faulty fuel control operation Engine Manual Plugged fuel filter Section 8.5.5 Plugged inlet screen to mechanical pump Section 8.5.3 Plugged inlet screen to electric pump Section 8.5.4...
  • Page 347 Indication/Trouble Possible Causes Action / Reference 9.1.6 Miscellaneous Engine Troubleshooting Air cleaner or hose restricted Section 8.5.9 Air in fuel system Section 8.5.2 Air vent restricted in fuel tank cap Clean Restricted fuel lines Engine Manual Loss of power Defective fuel injection pump Engine Manual Defective injector(s) or incorrect type Engine Manual...
  • Page 348 Battery Charger Indication/Trouble Possible Causes Action / Reference Short in 12 volt wiring causing overload of charger Section 8.9.11 F33, F34, F35 fuse blown Internal short Section 8.9.11 Bad cell in battery Test battery for de- fect according to Charging rate does not taper back battery manufactur- after charging for a few minutes of er’s instructions...
  • Page 349 Refrigeration / Temperature Control Indication/Trouble Possible Causes Action / Reference 9.4.1 Unit Will Not Cool Compressor contactor defective Check Compressor malfunction Compressor defective Section 8.7 A defrost cycle did not terminate. Check DTT Section 8.9.14 Refrigeration system Abnormal pressure Section 9.4.8 Check system for noncondensibles Section 8.6.2 9.4.2...
  • Page 350 Indication/Trouble Possible Causes Action / Reference 9.4.5 Unit Will Not Heat Or Has Insufficient Heating Heater(s) defective Section 8.9.3 Heater contactors or coil defective Replace Defective wiring / connectors Replace Unit will not heat or has insuffi- Loose terminal connections Tighten cient heat Low voltage...
  • Page 351 Indication/Trouble Possible Causes Action / Reference 9.4.8 Abnormal Pressure - Cooling Condenser coil dirty Section 8.8.2 Condenser fans rotating backwards Check Wiring Refrigerant overcharge or noncondensibles Section 8.6.2 High discharge pressure Discharge service valve partially closed Open Stuck Open Economizer Valve Section 8.8.8 Stuck Open LIV Section 8.8.9...
  • Page 352 Indication/Trouble Possible Causes Action / Reference 9.4.11 Expansion Valve (EVXV) Malfunction Low refrigerant charge Section 8.6.2 EVOT defective Section 8.9.14 Coil not seated properly on valve Section 8.8.11 Valve or Valve Coil defective Section 8.8.8 EVXV not controlling correctly EVOP defective Check EVXV inlet screen plugged Check/Replace...
  • Page 353 SECTION 10 Wiring 10.1 Harness Connector Wiring All illustrations provided in this Section are looking at the connector connection end (with the wires in the back). Table 10–1 PM 1MSM-10 LVE-26 SP20 Not Used SP30 LVE-15 AFAR-A SS-A FP-A FHR-A SP41 1MSM-3 SP22/2MSM-22...
  • Page 354 Table 10–2 DM SP11 SP00 SATCOM-B Not Used Not Used SP01 J1-A Not Used Not Used SP21 Not Used SATCOM-A Not Used Not Used Table 10–3 1MSM PM-24 2MSM-29 PM-12 SP00 Not Used 2MSM-30 SP21 SP01 Not Used PM-1 SP11 PM-23 Not Used Not Used...
  • Page 355 Table 10–4 2MSM Not Used CSMV-A CSMV-B CSMV-C CSMV-D LVE-43 LVE-27 LVE-28 LVE-41 LVE-42 SP12/PM25 ECXV-E LVE-37 LVE-22 LVE-35 SP32 DAS-A ECXV-A ECXV-B ECXV-C ECXV-D SP22/PM13 Not Used Not Used LVE-23 DAS-B SP02 SP03 1MSM-2 1MSM-6 Not Used Not Used Not Used Not Used Not Used...
  • Page 356 Table 10–5 3MSM AAT-A CST-A LVE-46 LVE-44 LVE-31 ECOT-A LVE-20 LVE-3 SP44 ECOP-3 LVE-33/ FLS-A CDT-A CST-B LVE-29 LVE-45 ECOT-B LVE-38 LVE-9 CDP-3 CSP-3 LVE-18 FLS-C AAT-B CDT-B LVE-47 LVE-30 LVE-32 LVE-39 SP43 CDP-1 CSP-1 ECOP-1 FLS-B SP31 62-12259 10–4...
  • Page 357 Table 10–6 CCB CCON-A1 HVB4-2 IBC-1 HVB3-5 HVB3-1 TERM1 Not Used Not Used Not Used SP59/CT-Orange Not Used SP57/CT-Tan GENCON-11 SP81 HVB3-6 HVB3-4 HVB3-2 CCB-30 SP64 SP90 Not Used Not Used Not Used PSCON-Aux-21 Not Used SP50 Not Used HVB3-3 TERM1 CCB-18 SP56/CT-Black...
  • Page 358 Table 10–7 ECU ENCT-B SP02 ENSSN-2 SP03 Not Used Not Used Not Used Not Used Not Used RPS-2 ENCT-A Not Used RPS-3 RPS-1 Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used...
  • Page 359 Table 10–9 HVB1 ES-H/HVB3-1 ES-G/HVB3-2 LVE-13/HVB3-3 LVE-12/HVB3-4 Not Used Not Used PM-29/HVB3-7 SP10/HVB3-8 SP31/HVB4-1 LVE/HVB4-2 LVE-8/HVB4-3 SP32/HVB4-4 Table 10–10 HVB2 SP40/HVB5-1 SP41/HVB5-2 SP42/HVB5-3 Not Used Not Used SP11/HVB3-5 SP21/HVB3-6 Not Used Not Used Not Used Not Used Not Used Not Used Not Used Table 10–11 HVB3 CCB-5/HVB1-A...
  • Page 360 10.2 Splice Points OFG-0V PRM-0V CCB-26 HVB3-8 SP50 IBC-3 PSCON2-A2 CCON-A2 SP56 CCB-1 CT-Black CCB-12 CT-Tan SP57 OGF-Brown CCB-34 CT-Blue SP58 OGF-Blue CCB-10 CT-Orange SP59 OGF-Orange SP64 CCB-19 HVT-3 SP65 CCB-35 HVT-4 PRM-12V HBV3-7 SP81 CCB-14 CCB-30 HBV4-3 SP33 IBC-2 10.3 Wiring Schematics The wiring schematics are provided on the following pages.
  • Page 374 Central America and Mexico Carrier Transicold Carrier Transicold 700 Olympic Drive Ejercito Nacional 253-A Piso 5 Athens, GA 30601 USA Colonia Anahuac 11320 Mexico D.F. ©2024 Carrier Corporation. Printed in USA 10/24 Carrier, Carrier Transicold is a registered trademark of Carrier Corporation.