Page 1: Table Of Contents
GEN-TRACED) ............21 0140M00517-A EVACUATION .............. 21 CHARGING ..............22 RS6215002r10 January 2021 Copyright © 2015-2017, 2020-2021 Goodman Manufacturing Company, L.P. is a registered trademark of Maytag Corporation or its related companies and is used under license. ® All rights reserved.
Page 2: Important Information
IMPORTANT INFORMATION WARNING CHECKING COMPRESSOR EFFICIENCY ....23 O PREVENT THE RISK OF PROPERTY DAMAGE PERSONAL INJURY THERMOSTATIC EXPANSION VALVE ..... 23 DEATH DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OVERFEEDING ............23 OTHER FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS UNDERFEEDING ............
Page 3 IMPORTANT INFORMATION Notice: WARNING When the outdoor unit is connected to main power, the inverter board has a small current flowing into it to be pre- O AVOID POSSIBLE EXPLOSION pared for operation when needed. Due to this, the Control •U SE ONLY RETURNABLE NOT DISPOSABLE...
Page 4: Product Identification
PRODUCT IDENTIFICATION NOMENCLATURES 7,8,9 11,12 Brand Engineering * G Goodman® Brand Major/ Minor Revisions * Not used for order or inventory control Product Category Electrical S Split System V Inverter Split System 1 - 208/230 V, 1 Phase, 60 Hz Unit Type Capacity X Condenser R-410A...
Page 5 PRODUCT IDENTIFICATION NOMENCLATURES 11,12 Brand Engineering* Single-Piece Air Handler Major/Minor Revisions *Not used for inventory management Unit Applica�on Refrigerant Charge Mul� Posi�on PSC Motor 4 = R-410A Mul� Posi�on EEM Motor Electrical Mul� Posi�on Variable-Speed Motor - Communica�ng 208/230V, 1 Phase, 60 Hz Cabinet Finish Cabinet Width Unpainted...
Page 6: System Operation
SYSTEM OPERATION This section gives a basic description of heat pump con- NOTE: The pressures and temperatures shown in the denser unit operation, its various components and their refrigerant cycle illustrations on the following pages are basic operation. Ensure your system is properly sized for for demonstration purposes only.
Page 7 SYSTEM OPERATION DEFROST CYCLE COOLCLOUD™ HVAC PHONE APPLICATION The defrosting of the outdoor coil is controlled by the The CoolCloud HVAC phone application designed to im- Control Board and the outdoor coil temperature thermistor prove the contractor’s setup /diagnostic experience. and defrost sensor.
Page 8 SYSTEM OPERATION BOOST MODE • In addition, the system can have Enhanced Dehumidification operation in setting “A”, “B”, or “C” of BOOST MODE can be enabled or disabled through the dehumidification based on dehumidification demand. control board push buttons or through the CoolCloud app. - See the Dehumidification Select section for more detail.
Page 9 SYSTEM OPERATION DEVICE STATUS stops. After completion of PUMP DOWN, unit shows error code“E11”. This menu displays information about the systems current NOTE: Refrigerant cannot be collected to the outdoor unit status. This menu can be utilized to confirm correct func- completely if the system is overcharged or if there is a delay tionality of the equipment and for troubleshooting purposes.
Page 10 SYSTEM OPERATION • Profile D (default) ramps up to 50% of the demand DEHUMIDIFICATION SELECT* for 1/2 minute, then ramps to 82% of the full cooling demand airflow and operates there for approximately When Dehumidification mode exists, the circulating fan out- 7 1/2 minutes.
Page 11 SYSTEM OPERATION MAX COMPRESSOR RPS FOR COOLING/HEATING (SELECTED RPS/ RPS range) Max compressor speed at which the outdoor unit will operate can be changed through the control board seven segment displays or the CoolCloud mobile app. Max compressor speed can be changed to get the required capacity or efficiency.
Page 12 SYSTEM OPERATION COOLING CYCLE NOTICE *VXC200601A PECIFICATION OF OR EARLIER MODELS ARE DIFFERENT FROM THIS SPECIFICATION OR DETAILS SEE THE SERVICE MANUAL THAT MATCHES THE MAJOR REVISION OF MODEL NAME Piping Diagram with TXV applicable indoor unit HP/LP Reversing Valve HP/LPs ensor Ball Valve (Gas)
Page 13 SYSTEM OPERATION COOLING CYCLE NOTICE *VXC200601A PECIFICATION OF OR EARLIER MODELS ARE DIFFERENT FROM THIS SPECIFICATION OR DETAILS SEE THE SERVICE MANUAL THAT MATCHES THE MAJOR REVISION OF MODEL NAME LEGEND: Tli = Thermistor (Indoor Liquid Temperature) Tl = Thermistor (Outdoor Liquid Temperature) Tgi = Thermistor (Indoor Gas Temperature) Td = Thermistor (Discharge Temperature) ID HP/LP sensor = Indoor High/Low Pressure Sensor...
Page 14: Servicing
SERVICING CHECKING VOLTAGE THERMOSTAT AND WIRING 1. Remove outer case, control panel cover, etc., from unit WARNING being tested. OLTAGE NOW PRESENT With power ON: With power ON, thermostat calling for cooling/heating. WARNING 1. Use a voltmeter to check for 24 volt at thermostat wires C and R in the indoor unit control panel.
Page 15: Checking Transformer And Control Circuit
SERVICING The required wires are data lines 1 and 2. 3. No voltage indicates faulty transformer, bad wiring, or The thermostat needs 4 wires between the indoor unit and bad splices. thermostat or 5 wires if the thermostat requires a Common 4.
Page 16: Checking Compressor
SERVICING 4. Compare your readings to the detected pressure vs occurs as the terminal vents. output voltage in the following table. Replace the sensor if the sensor is open, shorted, or outside of the voltage Ignition cannot occur at the venting terminal without the range.
Page 17: Ground Test
SERVICING NOTE: If an open compressor is indicated, allow ample TESTING CRANKCASE HEATER (OPTIONAL) time for the internal overload to reset before replacing com- pressor. The crankcase heater must be energized a minimum of 2 hours before the unit is operated. Crankcase heaters are GROUND TEST used to prevent migration or accumulation of refrigerant in the compressor crankcase during the off cycles and pre-...
Page 18: Testing Eev Coil Resistance
SERVICING TESTING EEV COIL RESISTANCE leaking. When stuck in the mid-position, part of the dis- charge gas from the compressor is directed back to the To check the resistance of the EEV coil, first disconnect suction side, resulting in excessively high suction pressure. EEV cable from the Control board.
Page 19: Avpec* Heater Control
SERVICING TROUBLESHOOTING Communications (Applies only to Systems with Compatible ComfortNetTM Outdoor Unit and CTK04AE* Thermostat) MOTOR CONTROL CIRCUITS The integrated air handler control has some on-board tools that may be used to troubleshoot the network. These tools are: red communications LED, green receive (Rx) LED, and HIGH VOLTAGE! learn button.
Page 20: Refrigeration Repair Practice
SERVICING a. Red communications LED – Indicates the status of the network. Refer to the Network Troubleshooting Chart for MOTOR CONTROL CIRCUITS the LED status and the corresponding potential problem. b. Green receive LED – Indicates network traffic. Refer to the Network Troubleshooting Chart for the LED status and the corresponding potential problem.
Page 21: Leak Testing (Nitrogen Or Nitrogen-Traced)
SERVICING of 15% silver, 80% copper, and 5% phosphorous). Recom- WARNING mended heat 1400°F. REFRIGERANT UNDER PRESSURE! Copper to Steel Joints - Silver Solder used without a flux Failure to follow proper procedures may cause (alloy of 30% silver, 38% copper, 32% zinc). Recommend- property damage, personal injury or death.
Page 22: Charging
SERVICING gauge (low side) has dropped to approximately 29 CAUTION inches of vacuum, open the valve to the vacuum micron Use refrigerant certified to AHRI standards. Used gauge. See that the vacuum pump will blank-off to a refrigerant may cause compressor damage and is not maximum of 500 microns.
Page 23: Checking Compressor Efficiency
SERVICING installation cannot be avoided, the bulb must be mounted 5. With the system still running, remove hose and reinstall so that the capillary tubing comes out at the top. both valve caps. 6. Check system for leaks. THE VALVES PROVIDED BY THE MANUFACTURER ARE DESIGNED TO MEET THE SPECIFICATION REQUIRE- NOTE: Subcooling information is valid only while the unit is MENTS FOR OPTIMUM PRODUCT OPERATION.
Page 24: Cecking Subcooling
SERVICING NOTE: An optional method is to locate the thermometer To obtain the amount of subcooling subtract 109°F from at the suction line service valve. Ensure the thermometer 120°F. makes adequate contact and is insulated for best possible The difference is 11° subcooling. See the specification readings.
Page 25: Checking Thermostatic Expansion Valve
SERVICING to rise subcooling to 8°F ± 1°F(*1), then check super- OPERATION heat. d. If subcooling is 8°F ± 1°F(*1) and superheat is high, 1. Remove the remote bulb of the thermostatic expansion adjust the TXV valve to 7 to 9°F superheat, then valve from the suction line.
Page 26: Refrigerant Piping
SERVICING CAUTION Do not allow the sludge or oil to contact the skin. Severe burns may result. NOTE: The Flushing Method using R-11 refrigerant is no longer approved by Daikin Brand Heating-Cooling. REFRIGERANT PIPING The piping of a refrigeration system is very important in relation to system capacity, proper oil return to compressor, pumping rate of compressor and cooling performance of the evaporator.
Page 27 SERVICING Hanger Wall Liquid Line Stud Strapped to Suction Line Liquid Line Metal Sleeve Suction Line Wrapped in Armaflex ® FIGURE 1-1. INSTALLATION OF REFRIGERATION PIPING FROM VERTICAL TO HORIZONTAL IMPORTANT - Refrigerant lines must not touch wall. Suction Line Liquid Line Outside Wall Wood Block...
Page 28 SERVICING If hanging line set from a joist or rafter, use metal strapping Wire Tie or heavy nylon wire tires (around suction line only) that are securely anchored. 8’ Floor Joist or T ape or Wire Tie Roof Rafter 8’ Floor Joist or Roof Rafter Metal Sleeve Strapping placed...
Page 29 SERVICING Oil Trap Construction LONG RADIUS STREET ELL 45° 45° STREET SHORT RADIUS STREET ELL SECTION 4. OUTDOOR UNIT IS BELOW THE INDOOR UNIT 1. The maximum elevation (vertical) difference between the outdoor unit and the indoor unit is 90 feet. 2.
Page 30: Duct Static Pressures And/Or Static Pres- Sure Drop Across Coils
SERVICING DUCT STATIC PRESSURES AND/OR STATIC PRES- SURE DROP ACROSS COILS This minimum and maximum allowable duct static pres- sure for the indoor sections are found in the specifications section. Tables are also provided for each coil, listing quantity of air (CFM) versus static pressure drop across the coil.
Page 31 SERVICING In continuous fan mode, the communicating thermostat • Measure static pressure of the return duct at the inlet provides the airflow demand. The communicating provides of the furnace 4 continuous fan speeds (25%, 50%, 75% and 100% of • Measure the static pressure of the supply duct at the maximum airflow).
Page 32: Indoor Unit Troubleshooting
SERVICING INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1) COMMUNICATING BOARD AUXILIARY ALARM SWITCH CIRCULATOR BLOWER The control is equipped with two Auxiliary Alarm terminals, This air handler is equipped with a variable speed circulator labeled CAS, which are typically utilized in series with a blower.
Page 33 SERVICING INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1) 19 kW or 15 kW 10 kW 8 kW 6 kW 5 kW 3 kW 20 kW (Factory Setting) Electric Heating Air Flow (*indicates factory setting) NOTE: Upon start up in communicating mode the circuit board may display an “Ec” error. This is an indication that the dip switches on the control board need to be configured in accordance with the Electric Heating Airflow Table.
Page 34 SERVICING INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1) 7 SEGMENT LED DESCRIPTIONOFCONDITION (characters will alternate) (nodisplay) INTERNAL CONTROL FAULT / NO POWER STANDBY, WAITING FOR INPUTS HEATER KIT TOO LARGE, TOO SMALL, OR NO MATCH FUSE OPEN AUXILIARY SWITCH OPEN DATA NOT ON NETWORK INVALIDDATAONNETWORK INVALID Bluetooth®...
Page 35 SERVICING INDOOR UNIT ERROR CODES INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1)
Page 36 SERVICING INDOOR UNIT ERROR CODES INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1)
Page 37 SERVICING INDOOR UNIT ERROR CODES INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1)
Page 38 SERVICING INDOOR UNIT ERROR CODES INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1)
Page 39 SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT WARNING HIGH VOLTAGE ! ISCONNECT POWER BEFORE SERVICING ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH INDOOR UNIT CONTROL BOARD proper fault codes. If the switch is later detected closed AUXILIARY ALARM SWITCH for 30 seconds, normal operation resumes and the error message is removed.
Page 40 SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT See following image. NOTE: Upon start up in communicating mode the circuit board may display an “Ed” error. This is an indication that the dip switches on the control board need to be configured in accordance with the Electric Heating Airflow Table.
Page 41 SERVICING DIAGNOSTIC CODES TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT DIAGNOSTIC CODES 7 SEGMENT LED DESCRIPTION OF CONDITION DISPLAY Normal Operation NO HTR KIT INSTALLED - SYSTEM CALLING FOR AUXILIARY HEAT (Minor Error Code) HEATER KIT DIP SWITCHES NOT SET PROPERLY FUSE OPEN AUXILIARY SWITCH OPEN DATA NOT ON NETWORK...
Page 42 SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT 2-digit 7 segment displays 7 Segment LED Description of Condition Display (State) (No Di s pl a y) INTERNAL CONTROL FAULT/NO POWER STANDBY, WAITING FOR INPUTS FAN COOL-COMMUNICATING MODE ONLY (Aux Hea t Dema nd) FAN HEAT-COMMUNICATING MODE ONLY (Aux Hea t Dema nd) FAN ONLY (Fa n Dema nd-Ma nua l )
Page 43 SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT 2-digit 7 segment displays 3. When the unit is havingsome minor error code in normalmode,2-digit 7 segmentdisplaysshow error code and airﬂowstatus. 2. Error code 3. Airﬂow 4. When the unit is havingsome minor error code during defrost opera�onin normalmode, 2-digit 7 segmentdisplaysshow state “dF”, error code and airﬂowstatus.
Page 44 SERVICING SETTING THE MODE DISPLAY - INDOOR UNIT TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT...
Page 45 SERVICING SETTING THE MODE DISPLAY - INDOOR UNIT TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT...
Page 46 SERVICING INDOOR UNIT (AVPEC**) ERROR CODES...
Page 47 SERVICING INDOOR UNIT (AVPEC**) ERROR CODES...
Page 48: Heat Pump Advance Feature Menu
SERVICING HEAT PUMP ADVANCED FEATURE MENU HEAT PUMP / FAULT CODE HISTORY SUBMENU ITEM INDICATION/USER MODIFIABLE OPTIONS COMMENTS (The Active and History Fault codes are displayed.) Active fault code and up to 6 fault code histories. ACTIVE (The Active Fault codes are displayed.) Active fault code only.
Page 49 SERVICING HEAT PUMP ADVANCED FEATURE MENU HEAT PUMP / DEVICE SETTING (1) SUBMENU ITEM INDICATION(Units) COMMENTS BOOST MODE is ON by default. See BOOST MODE BOOST MODE ENABLE OFF or ON section of this manual for more details. If enabled, when the ambient outdoor temperature is greater than this selected value, boost mode will be operational.
Page 50 SERVICING HEAT PUMP ADVANCED FEATURE MENU HEAT PUMP/ DEVICE SETTING (2) SUBMENU ITEM INDICATION(Units) COMMENTS Selecting "OFF" disables dehumidification selecting. Standard, OFF, A, B or C DEHUMIDIFICATION ENABLE "Standard", "A", "B" or "C" enables dehumidification. Selecting yes will reset any cooling setting to their RESET COOLING SETTINGS NO or YES factory defaults.
Page 51: Emergency Mode
SERVICING EMERGENCY MODE FOR EEV APPLICABLE INDOOR 1. HEATING EMERGENCY MODE UNIT Emergency Heating mode is to be used when commu- nication between the indoor unit and thermostat is not functioning properly. This mode will run the electric heat strips independently of any thermostat in one of two modes: High Heat Level or Low Heat Level.
Page 52 SERVICING Upon start up in emergency mode the circuit board may display an “Ed” error. This is an indication that the DIP switches on the control board need to be configured in accordance with the Electric Heating Airflow Table. Configuring the DIP switches to the unit will clear the error code.
Page 53 SERVICING 2. COOLING EMERGENCY MODE Avg. Cooling emergency mode is to be used when communica- ON time OFF time Run Time tion between the indoor and outdoor units is not functioning properly and temporary cooling operation is required. This Low Cool 7 minutes 15 minutes mode enables the outdoor unit and indoor unit to run inde-...
Page 54 SERVICING TROUBLESHOOTING- OUTDOOR UNIT AND INDOOR UNIT FOR EEV APPLICABLE UNIT Dipswitch Default Factory Se�ngs Switch # Se�ng Func�on No Use No Use ID DS-1 No Use No Use No Use No Use ID DS-2 No Use No Use Heater Kit Selec�on in Emergency Mode Heater Kit Selec�on in Emergency Mode ID DS-3 Heater Kit Selec�on in Emergency Mode...
Page 55 SERVICING COOLING EMERGENCY MODE WIRING FOR TXV AP- PLICABLE INDOOR UNIT Cooling emergency mode is available when using a TXV applicable indoor unit. To energize the blower at the appro- priate speed, standard Legacy wiring is required. The im- age below shows how the thermostat input terminals are to be wired when selecting a cooling airflow.
Page 56: Setting The Mode Display - Outdoor Unit
SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT MODE DISPLAY INTRODUCTION A 3-digit display is provided on the Control board as a backup tool to the thermostat for reading faults, fault history, monitoring and setting up the unit. Follow the information provided in this section to learn how to use the mode display.
Page 57 SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT NAVIGATING THROUGH THE DISPLAY SCREENS SCREEN The home or default screen on the display. This shows the most recent fault. SCREEN 1 To access, hold the RECALL button for 5 seconds at screen 0. SCREEN 2 To access, hold the RECALL button for 5 seconds at screen 1.
Page 58 SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT FAULT CODE HISTORY NAVIGATION < SCREEN 1> This mode will allow the user to see the six most recent system faults. For a list of the fault codes, please see the TROUBLESHOOTING tables in this document. <...
Page 59 SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT MONITORING MODE NAVIGATION < SCREEN 0 > < SCR EEN 2 > This screen allows the user to monitor system variables as shown in the tables at the end of this section. Blink interval: <...
Page 60 SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT SETTINGS MODE 1 NAVIGATION < SCREEN 3 > < SCREEN 0 > Setting Mode 1 allows the user to adjust system settings as shown in the tables at the end of this section. Blink interval: <...
Page 61 SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT SETTINGS MODE 2 < SCREEN 4 > < SCREEN 0 > Setting Mode 2 allows the user to change system settings. See table in back of this section. Blink interval: 0.4 sec. On - 0.4 sec. Off <...
Page 62 SERVICING 7-SEGMENT DISPLAY SCREEN 0 (Display FAULT CODE) Setting Contents Notes Fault code (present) SCREEN 1 (Display FAULT CODES) Setting Contents Notes Fault code (latest) Latest Fault code (2nd) Fault code (3rd) Fault code (4th) Fault code (5th) Fault code (6th) SCREEN 2 (MONITOR MODE) Setting Contents...
Page 63 SERVICING 7-SEGMENT DISPLAY SCREEN 3 (SETTING MODE 1) SCREEN 3 (SETTING MODE 1) Setting No. Contents Setting Installer/Serviceman Notes *1, *2 Cool Air ow Trim High 0: -15% 2: -5% 4: 5% 6: 15% 1: -10% 3: 0% 5: 10% Cool Air ow Trim Int 0: -15% 3: 0%...
Page 64 SERVICING 7-SEGMENT DISPLAY CTK04 ADDENDUM SCREEN 4 (SETTING MODE 2) Setting 0: 30min. 1: 60min. Maximum Defrost Interval 2: 90min. 3: 120min. 0:Same Level 1:Outdoor Lower Vertical Rise 2:Indoor Lower 0:ON 1:OFF System Verification Test (System Test) 0:ON 1:OFF Force Defrost Cycle 0:ON 1:OFF Pump Down...
Page 65: Ctk04 Addendum
SERVICING CTK04 ADDENDUM CTK04** COMFORTNET™ THERMOSTAT TWO-WIRE OUTDOOR, FOUR-WIRE INDOOR WIRING OVERVIEW Low voltage wiring consists of two wires between the indoor The ComfortNet™ system (or CT system) is a system that unit and outdoor unit and four wires between the indoor unit includes a ComfortNet compatible modular blower heat and the thermostat.
Page 66 SERVICING CTK04 ADDENDUM THERMOSTAT MENU SCREEN SYSTEM START-UP TEST NOTICE N INITIAL POWER START THE OUTDOOR UNIT WILL DISPLAY CODE E11, SYSTEM SIGNALING THAT INITIAL TEST MUST BE RUN OLLOW ™ OMFORT SETUP SCREEN TO ENTER APPLICATION UNIQUE INFORMATION OMFORT ET THERMOSTAT MANUAL FOR DETAILED INFORMATION A system test is now required to check the equipment...
Page 67 SERVICING CTK04 ADDENDUM 4. From the MENU screen, scroll down and select Comfort- Net™ USER MENU. 5. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom.) 6.
Page 68 SERVICING CTK04 ADDENDUM 8. Next, scroll down and select EQUIP TEST. 9. Select SYSTEM TEST. 10.Select ON to run the SYSTEM TEST. Press DONE to initiate test. 11.Allow the system test to run for its duration (5-15 minutes). EQUIP TEST SCREEN will show the system test is ON once selected.
Page 69 SERVICING CTK04 ADDENDUM 12.Press Previous Menu button and navigate to HOME screen and allow test to finish. The display similar to the one at the right will be displayed after SYSTEM TEST completes. Test is complete only when CODE 11 notice clears from BOTH the thermostat display AND the seven segment LED display on the outdoor unit.
Page 70 SERVICING CTK04 ADDENDUM 3. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom). 4. Select YES to continue. 5. Select HEAT PUMP. 6.
Page 71 SERVICING CTK04 ADDENDUM 7. Select CHARGE Mode. 8. Select ON. Press DONE to initiate CHARGE Mode. (System will then run for 1 hour and either return to cool- ing or heating mode depending on if the mode thermo- stat is set at COOL or HEAT MODE from the SYSTEM menu on the main screen.
Page 72 SERVICING CTK04 ADDENDUM BOOST MODE BOOST MODE enables the system to operate at a higher compressor speed than rated maximum compressor speed and satisfy the structural load more effectively during higher ambient outdoor conditions. BOOST MODE is initiated by an outdoor temperature sensor located in the outdoor unit. Please note that outdoor equipment operational sound lev- els may increase while the equipment is running in BOOST MODE.
Page 73 SERVICING CTK04 ADDENDUM 3. Enter Installer password, if known. Menu > ComfortNet User Menu a. The password is the thermostat date code and can be obtained by selecting the red Cancel button and Please enter the installer password selecting the Dealer Information button. b.
Page 74 SERVICING CTK04 ADDENDUM 7. BOOST MD turns BOOST MODE OFF or ON. BOOST ...ComfortNet User Menu > Heat Pump > SYS SETUP MODE is ON by default. Previous SET MAX CURRENT : OFF Menu Outdoor Help VERTICAL RISE : Lower BOOST MD : ON BOOST TEMP : Always On ...HEAT PUMP >...
Page 75 SERVICING CTK04 ADDENDUM 9. Once satisfied with BOOST MODE adjustments, navigate to the HOME screen by selecting the Previous Menu button three times then selecting HOME. DEHUMIDIFICATION 6. Scroll down and select Dehumidification. The thermostat reads the indoor humidity level and allows 7.
Page 76 SERVICING CTK04 ADDENDUM DEHUMIDIFICATION SELECT* When Dehumidification mode exists, the circulating fan out- put is reduced, increasing system run time, over cooling the evaporator coil and ultimately removing more humidity from the structure than if only in cooling mode. The system can have Dehumidification operation in setting “STD”, “A”, “B”...
Page 77 SERVICING CTK04 ADDENDUM SET THERMOSTAT TO ADJUST MAXIMUM COMPRESSOR SPEED Please follow the following sequence to enter MAXIMUM compressor speed. Maximum compressor speed at which the outdoor unit will operate in cooling or heating mode can be changed using thermostat. Maximum compressor speed can be changed to get the required capacity or efficiency.
Page 78 SERVICING CTK04 ADDENDUM 4. Select YES to continue. Menu > ComfortNet User Menu Changing these se�ngs could cause improper opera�on of your HVAC equipment! Would you like to con�nue? 5. Select HEAT PUMP. Menu > ComfortNet User Menu Previous Air Handler Menu Help Heat Pump...
Page 79 SERVICING CTK04 ADDENDUM 8. Select Cool RPS SELECT(cooling mode) or HEAT RPS SELECT (heating mode). Select the desired Maximum compressor speed 9. Once Maximum compressor speed is set, navigate to SYSTEM MENU HOME HOME screen. Enter normal operation with temperature offset or thermostat schedule, as desired.
Page 80 SERVICING CTK04 ADDENDUM 3. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom). 4. Select YES to continue. 5. Select HEAT PUMP. 6.
Page 81 SERVICING CTK04 ADDENDUM 7. User can change the airflow trim at high, intermediate and low compressor for cooling and heating mode. Select: Cool Airflow Trim Hi: high speed cooling Cool Airflow Trim Int: intermediate speed cooling Cool Airflow Trim Low: low speed cooling Heat Airflow Trim Hi: high speed heating Heat Airflow Trim Int: intermediate speed heating Heat Airflow Trim Low: low speed heating...
Page 82 SERVICING CTK04 ADDENDUM SET THERMOSTAT TO ADJUST INDOOR AIRFLOW PROFILE, COOL/HEAT ON DELAY AND COOL/HEAT OFF DELAY DEFROST 1. Please follow the sequence 1. to .6 of Set Thermostat To Adjust Indoor Air CFM trim 2. Select Cool Set-up for Cool Airflow Profile, Cool ON Delay or Cool OFF Delay Heat Set-up for Heat ON Delay or Heat OFF Delay Heat Airflow Profile, DEFROST...
Page 83 SERVICING CTK04 ADDENDUM SET THERMOSTAT TO FORCE DEFROST CYCLE Follow the following sequence to Force a defrost cycle. NOTE: Unit will need to wait another 6 minutes before starting another force defrost cycle. 1. On the HOME screen, select MENU. 2.
Page 84 SERVICING CTK04 ADDENDUM 5. Select HEAT PUMP. 6. Select EQUIP TEST. 7. Select FORCE DF CYCLE. 8. Select ON. Press DONE to initiate FORCE DEFROST CYCLE.
Page 85 SERVICING CTK04 ADDENDUM SET THERMOSTAT TO PUMP DOWN Please follow the following sequence to enter PUMP DOWN to accumulate the refrigerant to outdoor unit. Do not operate Cool ON or Heat ON mode to enter PUMP DOWN. Before starting the PUMP DOWN operation, change indoor fan trim, delay and profile back to default and stop electric heater and gas furnace.
Page 86 SERVICING CTK04 ADDENDUM 4. Select YES to continue. 5. Select HEAT PUMP . 6. Select MAINTENANCE. 7. Select PUMP DOWN.
Page 87 SERVICING CTK04 ADDENDUM 8. Select ON. Press DONE to initiate PUMP DOWN. Approximately one minute later, the compressor should start operating. Check the amperage at the compressor wiring to see the compressor operation status. Close liquid service valve approximately two minutes after compressor has come on.
Page 88 SERVICING CTK04 ADDENDUM SET 7-SEGMENT MODE DISPLAY TO PUMP DOWN Please follow the following sequence to enter PUMP DOWN to accumulate the refrigerant to outdoor unit. Do not operate COOL ON or HEAT ON mode to enter PUMP DOWN. Before starting the PUMP DOWN operation, change indoor fan trim, delay and profile back to default and stop electric heater and gas furnace.
Page 89 SERVICING CTK04 ADDENDUM 3. Follow screen for System Status. Time Stamp (Compressor run time) HEAT PUMP Current system operational Mode (cooling, cooling startup, heating, heating startup, oil return, defrost, stop) Compressor Reduction Mode Requested and Actual percentage Demand (Requested Demand, Actual cooling / heating provided) Requested and Reported ID airflow (Requested CFM, Actual CFM) Outdoor Air Temperature, Outdoor Fan speed...
Page 90 SERVICING CTK04 ADDENDUM TROUBLESHOOTING - INDOOR UNIT FOR EEV APPLICABLE UNIT DIRECTIONS TO COMFORTNET SYSTEM ADVANCED FEATURE MENUS Press MENU, scroll down and press COMFORTNET USER MENU. Enter the date code (password) when prompted. The date code is printed on the back of the thermostat; or press MENU>EQUIPMENT STATUS and scroll down to find the date code.
Page 91 SERVICING CTK04 ADDENDUM TROUBLESHOOTING - INDOOR UNIT FOR EEV APPLICABLE UNIT SET-UP SET-UP Submenu Item User Modifiable Options Comments Choose the operation mode of Humidifier OFF*, ON, IND (This selection is only displayed if HUM is selected in ACC) Choose the indoor fan speed at the time of humidification HUM FAN SPD (%) 25%, 50%*, 75% , 100% (This selection is only displayed if IND is selected...
Page 92 SERVICING CTK04 ADDENDUM HEAT PUMP ADVANCED FEATURE MENU DIAGNOSTICS INDICATION/USER SUBMENU ITEM COMMENTS MODIFIABLE OPTIONS s t l i t c Y " c " . y r STATUS Provides compressor run �me in hours. Time Stamp (TS) Current system opera�on mode (COOLING, COOLING STARTUP, HEATING, HEATING STARTUP, Mode (MD) DEFROST, OIL RETURN, STOP).
Page 93 SERVICING CTK04 ADDENDUM HEAT PUMP ADVANCED FEATURE MENU SYSTEM SETUP (SYS SETUP) Reset System Setup Op�ons to Factory i t c " " S t l u i t t Defaults If the outdoor & indoor units are within +/- 15 �. ver�cal distance, Same Level, Outdoor Lower, or select SAME LEVEL.
Page 94 SERVICING CTK04 ADDENDUM HEAT PUMP ADVANCED FEATURE MENU COOL SETUP SUBMENU ITEM USER MODIFIABLE OPTIONS COMMENTS CL Reset (CL RESET) YES or NO Selecting to default factory setting. *1, *2 -15% to +15% in 5% increments Selects the cooling airflow trim amount. Cool Airflow Trim Hi (C TR H) Cool Airflow Trim Int...
Page 95: Troubleshooting
TROUBLESHOOTING COOLING ANALYSIS CHART POSSIBLE CAUSE X IN ANALYSIS GUIDE INDICATE "POSSIBLE CAUSE" Liquid stop valve does not fully open Gas stop valve does not fully open Line set restriction Line set length is too long Blocked filter-dryer OD EEV coil failure OD EEV failure ID EEV coil failure ID EEV failure...
Page 96 TROUBLESHOOTING HEATING ANALYSIS CHART POSSIBLE CAUSE X IN ANALYSIS GUIDE INDICATE "POSSIBLE CAUSE" Liquid stop valve does not fully open Gas stop valve does not fully open Line set restriction Line set length is too long Blocked filter-dryer OD EEV coil failure OD EEV failure ID EEV coil failure ID EEV failure...
Page 97 TROUBLESHOOTING Control Board Transmitted Climate Fault Code Thermostat Fault Probable Causes Corrective Actions LED Display Talk Message ● High electrical noise OD CTRL FAIL1 Indicates a general memory error. ● Replace control board if necessary ● Faulty control board ● Blocked/restricted condenser coil ●...
Page 98 TROUBLESHOOTING Control Board Transmitted Climate Fault Code Thermostat Fault Probable Causes Corrective Actions LED Display Talk Message ● Discharge thermistor inoperable or ● Check discharge thermistor resistance and This error indicates the equipment improperly connected connections; Repair/replace as needed is experiencing frequent high ●...
Page 99 TROUBLESHOOTING Control Board Transmitted Climate Fault Code Thermostat Fault Probable Causes Corrective Actions LED Display Talk Message ● Check installation clearances. ● Check the opening of stop valve, should be full ● Short circuit condition open; Repair/replace if needed ● Stop valve not completely open Board detected a high current ●...
Page 100 TROUBLESHOOTING Control Board Transmitted Climate Fault Code Thermostat Fault Probable Causes Corrective Actions LED Display Talk Message This error indicates the equipment ● Obstruction in fan rotation ● Check and clean grille of any debris is experiencing frequent outdoor ● Ooutdoor fan motor not connected ●...
Page 101 TROUBLESHOOTING RE-WRITING SHARED DATA TO OUTDOOR UNIT 8. Connect the Climate Talk (CT) connector to the outdoor USING BLUETOOTH® SHARED DATA LOADER unit. BTSDL01 9. Turn the power ON to the outdoor unit. 10. Continue the operation of the unit as desired. Check Troubleshooting codes to determine the need to flash shared data to outdoor unit.
Page 102 TROUBLESHOOTING RED LED (H1P) Bluetooth® Shared Data Loader BTSDL01 CONNECTOR (X52A) ZOOMED VIEW OF 20 SEER OD CONTROL BOARD...
Page 103 TROUBLESHOOTING NETWORK TROUBLESHOOTING 3. Perform continuity check on wires to make sure cable is OK. Replace the cable if necessary. If a network communication error code has occurred, use 4. Change both dip switches of DS1 on the outdoor unit the following steps to help troubleshoot the system.
Page 104 TROUBLESHOOTING THERMISTOR RESISTANCE VALUE Tm : Coil TI : Liquid Tb : Defrost Tl : Liquid Td : Discharge Ta : Ambient Tgi: Indoor Gas Tli: Indoor Liquid Thermistor Thermistor Thermistor Thermistor TEMP TEMP Volts Volts Volts Volts ℃ Resistance Resistance Resistance Resistance...
Page 105 TROUBLESHOOTING PRESSURE TEMPERATURE R-410A Pressure vs. Temperature Chart PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F -37.7 37.8 74.3 100.2 420.0 120.7 137.6 -34.7 38.7 74.9 100.7 422.0 121.0 137.9 -32.0 39.5 75.5 101.1 424.0 121.4 138.3 -29.4 40.5...
Page 106 TROUBLESHOOTING Required Liquid Line Temperature LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT SERVICE VALVE (PSIG)
Page 107 TROUBLESHOOTING INSTALL THE ELECTRICAL BOARD WARNING When working on a service port, ensure that no refrigerant HIGH VOLTAGE ! and/or compressor oil is sprayed onto the electrical board. ISCONNECT POWER BEFORE SERVICING OR This could damage the board’s functionality. INSTALLING ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY...
Page 108 TROUBLESHOOTING WARNING VOID CONTACT WITH THE CHARGED AREA •N EVER TOUCH THE CHARGED AREA BEFORE CONFIRMING THAT THE RESIDUAL VOLTAGE IS VOLTS OR LESS 1. S HUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR MINUTES 2. M AKE SURE TO TOUCH THE ARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE...
Page 109 TROUBLESHOOTING WARNING VOID CONTACT WITH THE CHARGED AREA •N EVER TOUCH THE CHARGED AREA BEFORE CONFIRMING THAT THE RESIDUAL VOLTAGE IS VOLTS OR LESS 1. S HUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR MINUTES 2. M AKE SURE TO TOUCH THE ARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE...
Page 110: Wiring Diagrams
WIRING DIAGRAM *VZC200[24-36]1** Wiring is subject to change. Always refer to wiring diagram on the unit for the most up to date wiring.
Page 111 WIRING DIAGRAM *VZC200481** / *VZC200601B* (OR LATER) Wiring is subject to change. Always refer to wiring diagram on the unit for the most up to date wiring.
Page 112 WIRING DIAGRAM HIGH VOLTAGE! ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH INDOOR UNIT FOR TXV APPLICABLE UNIT (MBVC**00AA-A) 763962519 9!213 60 92...
Page 113 WIRING DIAGRAM INDOOR UNIT FOR EEV APPLICABLE UNIT (AVPEC**) RAM MONITOR FLASH WRITER SHARE DATA Wiring is subject to change. Always refer to wiring diagram on the unit for the most up to date wiring.
Page 114: Accessories
ACCESSORIES EXPANSION VALVES *VZC20***1** Model Name TXV-Kit *VZC200241** TXV-V24 *VZC200361** TXV-V36 *VZC200481** TXV-V48 *VZC200601** TXV-V60 R410A - Max. 75°C (167°F) SS = 2°C (3.6°F) or according cation Number of turns Number of turns Number of turns Number of turns from SS to from SS to from SS to from SS to...
Page 115 ACCESSORIES ELECTRIC HEATER (OPTIONAL ITEM) HEAT KIT NOMINAL kW 19/20 Optional electric heaters may be added, in the quantities shown in the specifications section, to provide electric resis- 1000 tance heating. Under no condition shall more heaters than the quantity 1200 shown be installed.
Page 116 ACCESSORIES AV**PEC HEATER KIT MODELS AVPEC25B14A* AVPEC37C14A* AVPEC59D14A* AVPEC61D14A* *Revision level taht may or may not be designated. NOTE: Airflow selection should meet the minimum requirements as mentioned in the air handler Installation instructions. For heater kit installation, it is important to set the capacity of the electric heater at Set-up menu on the thermostat and DIP switch on indoor unit control board.
Page 117 ACCESSORIES For installations not indicated above the following formula is to be used: TR = (kW x 3412) x (Voltage Correction) / (1.08 x CFM) Where: TR = Temperature Rise kW = Heater Kit Actual kW 3412 = Btu per kW VC* = 1.0 (240 Supply Volts) = 0.92 (230 Supply Volts) = 0.84 (220 Supply Volts)
Page 118 GOODMAN BRAND ® AMANA BRAND ® is a registered trademark of Maytag Corporation or its related companies and is used under license. ® All rights reserved. Copyright © 2015-2017, 2020-2021 Goodman Manufacturing Company, L.P.

Maytag Amana VZC20 Service And Troubleshooting

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