Panasonic CS-E18QB4RW Service Manual
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Panasonic CS-E18QB4RW Service Manual

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Please file and use this manual together with the service manual for Model No. CU-4E23QBR CU-4E27QBR CU-5E34QBR, Order
No. PAPAMY1404064CE
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
WARNING
PRECAUTION OF LOW TEMPERATURE
Indoor Unit
CS-E12QB4RW
CS-E18QB4RW
Order No: PAPAMY1405050CE
Air Conditioner
Outdoor Unit
CU-E12QB4R
CU-E18QB4R
Destination
Oceania
© Panasonic Corporation 2014

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Summary of Contents for Panasonic CS-E18QB4RW

  • Page 1 PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit. © Panasonic Corporation 2014...

  • Page 2: Table Of Contents

    7. Block Diagram ..........16 17.2 Heat Mode Performance Data....90 CS-E12QB4RW CU-E12QB4R ....16 18. Service Data ............. 91 CS-E18QB4RW CU-E18QB4R ....17 18.1 Cool Mode Outdoor Air Temperature 8. Wiring Connection Diagram ......18 Characteristic..........91 Indoor Unit ..........18 18.2 Heat Mode Outdoor Air Temperature Outdoor Unit ..........19...

  • Page 3: Safety Precautions

    1. Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. ...
  • Page 4 WARNING During pump down operation, stop the compressor before remove the refrigeration piping. (Removal of compressor while compressor is operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.) After completion of installation or service, confirm there is no leakage or refrigerant gas.

  • Page 5: Specifications

    2. Specifications Indoor CS-E12QB4RW Model Outdoor CU-E12QB4R Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.85 3.40 4.00 0.85 3.40 4.00 Capacity BTU/h 2900 11600 13600 2900 11600 13600 kcal/h 2920 3440 2920 3440 Running Current –...
  • Page 6 Indoor CS-E12QB4RW Model Outdoor CU-E12QB4R Type BACKWARD FAN Material Motor Type DC / Transistor (8-poles) Input Power – Output Power Cool Heat Cool Heat Cool Speed Heat Cool Heat Cool Heat Type Propeller Fan Material Motor Type DC (8-poles) Input Power –...
  • Page 7 Indoor CS-E12QB4RW Model Outdoor CU-E12QB4R Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2) Standard length m (ft) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 15 (49.2) I/D & O/D Height different m (ft) 15.0 (49.2) Additional Gas Amount...
  • Page 8 Indoor CS-E18QB4RW Model Outdoor CU-E18QB4R Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.90 4.80 5.70 0.90 4.80 5.70 Capacity BTU/h 3070 16400 19400 3070 16400 19400 kcal/h 4130 4900 4130 4900 Running Current –...
  • Page 9 Indoor CS-E18QB4RW Model Outdoor CU-E18QB4R Type BACKWARD FAN Material Motor Type DC / Transistor (8-poles) Input Power – Output Power Cool Heat Cool Heat Cool Speed Heat Cool Heat Cool Heat Type Propeller Fan Material Motor Type Induction (6-poles) Input Power –...
  • Page 10 Indoor CS-E18QB4RW Model Outdoor CU-E18QB4R Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2) Standard length m (ft) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 30 (98.4) I/D & O/D Height different m (ft) 20.0 (65.6)

  • Page 11: Features

    Environment Protection Non-ozone depletion substances refrigerant (R410A)  Long Installation Piping CS-E12QB4RW, CU-E12QB4R long piping up to 15 meters CS-E18QB4RW, CU-E18QB4R long piping up to 30 meters  Easy to use remote control  Quality Improvement Random auto restart after power failure for safety restart operation...

  • Page 12: Location Of Controls And Components

    4. Location of Controls and Components Indoor Unit Outdoor Unit Remote Control...

  • Page 13: Dimensions

    5. Dimensions Indoor Unit...

  • Page 14: Outdoor Unit

    Outdoor Unit 5.2.1 CU-E12QB4R 5.2.2 CU-E18QB4R...

  • Page 15: Refrigeration Cycle Diagram

    6. Refrigeration Cycle Diagram...

  • Page 16: Block Diagram

    7. Block Diagram CS-E12QB4RW CU-E12QB4R...

  • Page 17: Cs-E18Qb4Rw Cu-E18Qb4R

    CS-E18QB4RW CU-E18QB4R...

  • Page 18: Wiring Connection Diagram

    8. Wiring Connection Diagram Indoor Unit...

  • Page 19: Outdoor Unit

    Outdoor Unit 8.2.1 CU-E12QB4R Resistance of Compressor Windings MODEL CU-E12QB4R CONNECTION 5RS102XNA21 1.211 Ω 1.211 Ω 1.211 Ω Note: Resistance at 20°C of ambient temperature.
  • Page 20 8.2.2 CU-E18QB4R Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-E18QB4R MODEL CU-E18QB4R CONNECTION CWA951620 CONNECTION 5RD132XBC21 YELLOW-BLUE 115.8 Ω 1.897 Ω YELLOW-ORANGE 71.71 Ω 1.907 Ω YELLOW-RED 116.2 Ω 1.882 Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

  • Page 21: Electronic Circuit Diagram

    9. Electronic Circuit Diagram Indoor Unit...

  • Page 22: Outdoor Unit

    Outdoor Unit 9.2.1 CU-E12QB4R...
  • Page 23 9.2.2 CU-E18QB4R...

  • Page 24: Printed Circuit Board

    10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board...
  • Page 25 10.1.2 Display Printed Circuit Board...

  • Page 26: Outdoor Unit

    10.2 Outdoor Unit 10.2.1 Main Printed Circuit Board 10.2.1.1 CU-E12QB4R...
  • Page 27 10.2.1.2 CU-E18QB4R...
  • Page 28 10.2.2 Demand Control Printed Circuit Board 10.2.2.1 CU-E12QB4R 10.2.2.2 CU-E18QB4R...

  • Page 29: Installation Instruction

    11. Installation Instruction 11.1 Indoor Unit 11.1.1 Selecting the Location for the Indoor Unit Provide a check port on the piping side ceiling for repair and maintenance.  Install the indoor unit once the following conditions are satisfied and after receiving the customer approval. The indoor unit must be within a maintenance space.
  • Page 30 11.1.2 Installation of Indoor Unit This air conditioner uses a drain up motor. Horizontally install the unit using a level gauge. CEILING OPENING DIMENSIONS AND HANGING BOLT LOCATION The paper model for installation expand or shrink according to temperature and humidity. Check on dimensions before using it.
  • Page 31 Vacuum drying After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit. The vacuum drying must be carried out by using the service ports of both the liquid and gas side valves. CAUTION Use two wrenches and tighten with regular torque. Flare nut fastening torque N•m (kgf•cm) ø6.35 mm 18 (180)
  • Page 32 11.1.5 Heat Insulation Be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation work leads to water leakage. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). Precautions in high humidity circumstance.
  • Page 33 11.1.6.1 Wire Stripping and Connection Requirement 11.1.7 Installation of Decorative Panel The decorative panel has its installation direction. Confirm the direction by displaying the piping side. Remove the air inlet grille by moving the catchers to center. Fitting the decorative panel Temporarily secure the fixing screws (3 pcs.) before fitting the decorative panel.
  • Page 34 Fit the decorative panel and ceiling wall together and confirm no gap in between. Readjust indoor unit height, if there is a gap between ceiling wall and decorative panel. Open the indoor control box cover. (2 pcs) Insert firmly the connector of cosmetic louver to indoor pcb CN-STM1, CN-STM2 and CN-DISP.

  • Page 35: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 Select the Best Location  11.2.1.1 Indoor/Outdoor Installation If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from Diagram the condenser is not obstructed.  There should not be any animal or plant which could be affected by hot air discharged.
  • Page 36 11.2.3 Connect the Piping 11.2.3.1 Connecting the Piping to Indoor Unit Please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the copper pipe. Do not overtighten, overtightening may cause gas leakage (In case of using long piping) Piping size Torque Connect the piping...
  • Page 37 Connect the center hose of the charging set to a vacuum pump. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes. Close the Low side valve of the charging set and turn off the vacuum pump.
  • Page 38 11.2.6 Pipe Insulation Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 6 mm or above.
  • Page 39 11.2.8 Auto Switch Operation The following operations can be performed by pressing the “AUTO” switch. AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto Switch is pressed. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto Switch is pressed continuously for more than 5 sec.

  • Page 40: Operation Control

    12. Operation Control 12.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.

  • Page 41: Indoor Fan Motor Operation

    12.1.5 Automatic Operation  This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature.  During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature.

  • Page 42: Outdoor Fan Motor Operation

    [Heating]  According to indoor pipe temperature, automatic heating fan speed is determined as follows. B. Feedback control  Immediately after the fan motor started, feedback control is performed once every second.  During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error counter increase, fan motor is then stop and restart.

  • Page 43: Airflow Direction

    12.4 Airflow Direction 1. There is one type of airflow, vertical airflow (directed by horizontal vane). 2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).

  • Page 44: Quiet Operation (Heating)

    12.6 Quiet Operation (Heating)  Purpose To provide quiet heating operation compare to normal operation.  Control condition Quiet operation start condition  When “POWERFUL/QUIET” button at remote control is pressed. POWERFUL/QUIET LED illuminates. Quiet operation stop condition  When one of the following conditions is satisfied, quiet operation stops: ...

  • Page 45: Auto Restart Control

    12.9 Auto Restart Control  When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes.

  • Page 46: Protection Control

    13. Protection Control 13.1 Protection Control For All Operations 13.1.1 Restart Control (Time Delay Safety Control)  The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period. ...
  • Page 47 13.1.4 Compressor Overheating Prevention Control  Instructed frequency for compressor operation will be regulated by compressor top temperature. The changes of frequency are as below.  If compressor top temperature exceeds 107°C, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking.

  • Page 48: Protection Control For Cooling & Soft Dry Operation

    13.2 Protection Control For Cooling & Soft Dry Operation 13.2.1 Outdoor Air Temperature Control  The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.  This control will begin 1 minute after the compressor starts. ...

  • Page 49: Protection Control For Heating Operation

    13.2.6 Odor Cut Control  To reduce the odor released from the unit. Start Condition  AUTO FAN Speed is selected during COOL or DRY operation.  During freeze prevention control and timer preliminary operation, this control is not applicable. Control content ...
  • Page 50 13.3.7 Demand Control  When the air-conditioner connected to Demand Response Enabling Devices (DRED), the power consumption especially during peak hours could be controlled.  Three Demand response modes (DRM) are available DRM1 = Compressor cut off DRM2 = Operate at 50% of rated input power DRM3 = Operate at 75% of rated input power ...

  • Page 51: Servicing Mode

    14. Servicing Mode 14.1 Auto OFF/ON Button AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds.

  • Page 52: Remote Control Button

    REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off/On Mode is in standby condition) and press “AC Reset”...

  • Page 53: Outdoor Pcb Test Run Operation (For Pump Down/Servicing Purpose)

    14.3 Outdoor PCB Test Run Operation (For Pump Down/Servicing Purpose)  The Test Run operation will be activated by short-circuiting CN-S (Pin 1 and 2) at outdoor unit PCB after power supplied to outdoor unit terminal 1 and 2. The unit forced to run rated frequency cooling operation mode. ...
  • Page 54  CU-E18QB4R...

  • Page 55: Troubleshooting Guide

    15. Troubleshooting Guide 15.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no Normal Pressure and Outlet Air Temperature (Standard) electrical problems before inspecting the refrigeration cycle. Gas Pressure Outlet air Temperature Such problems include insufficient insulation, problem with the (kg/cm (°C) power source, malfunction of a compressor and a fan.
  • Page 56 15.1.1 Relationship Between the Condition of the Air Conditioner and Pressure and Electric Current Cooling Mode Heating Mode Condition of the Electric current Electric current air conditioner Low Pressure High Pressure Low Pressure High Pressure during operation during operation Insufficient refrigerant ...

  • Page 57: Breakdown Self Diagnosis Function

    15.2 Breakdown Self Diagnosis Function 15.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  When the latest abnormality code on the main Once abnormality has occurred during operation, unit and code transmitted from the remote the unit will stop its operation, and Timer LED controller are matched, power LED will light blinks.

  • Page 58: Error Codes Table

    15.3 Error Codes Table Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation No memory of failure — Normal operation — — Indoor fan only  Indoor/outdoor wire terminal Indoor/outdoor operation can Indoor/outdoor After operation for ...
  • Page 59 Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation  Check refrigeration system Outdoor cooling high 4 times happen Cooling high pressure — pressure protection within 20 minutes protection  Outdoor air circuit Power transistor  PCB faulty 4 times happen Power transistor module module overheating...

  • Page 60: Self-Diagnosis Method

    15.4 Self-diagnosis Method 15.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions  During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused  Faulty indoor unit PCB.
  • Page 61 15.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions  During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit or outdoor unit PCBs mounted. ...
  • Page 62 15.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 63 15.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.  Faulty sensor.
  • Page 64 15.4.5 H16 (Outdoor Current Transformer) Malfunction Decision Conditions  An input current, detected by Current Transformer CT, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction Caused  Lack of gas  Broken CT (current transformer) ...
  • Page 65 15.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused ...
  • Page 66 15.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 67 15.4.8 H24 (Indoor Pipe Temperature Sensor 2 Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor 2 are used to determine sensor errors. Malfunction Caused  Faulty connector connection.
  • Page 68 15.4.9 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 69 15.4.10 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 70 15.4.11 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 71 15.4.12 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions  The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit and outdoor unit PCBs used.  Indoor unit or outdoor unit PCB defective.
  • Page 72 15.4.13 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused  Operation stops due to short circuit inside the fan motor winding. ...
  • Page 73 15.4.14 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED flashing) Malfunction Decision Conditions  Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. ...
  • Page 74 15.4.15 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions  Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) Malfunction Caused ...
  • Page 75 15.4.16 F11 (4-way Valve Switching Failure) Malfunction Decision Conditions  When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction Caused ...
  • Page 76 15.4.17 F90 (Power Factor Correction Protection) Malfunction Decision Conditions  To maintain DC voltage level supply to power transistor.  To detect high DC voltage level after rectification. Malfunction Caused  During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors.
  • Page 77 15.4.18 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions  The input current is low while the compressor is running at higher than the setting frequency. Malfunction Caused  Lack of gas.  3-way valve close. Troubleshooting...
  • Page 78 15.4.19 F93 (Compressor Rotation Failure) Malfunction Decision Conditions  A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused  Compressor terminal disconnect  Faulty Outdoor PCB  Faulty compressor Troubleshooting...
  • Page 79 15.4.20 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry) Malfunction Decision Conditions  During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction Caused ...
  • Page 80 15.4.21 F96 (IPM Overheating) Malfunction Decision Conditions  During operating of cooling and heating, when IPM temperature data (100°C) is detected by the IPM temperature sensor. Multi Models only Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat sink temperature sensor.
  • Page 81 15.4.22 F97 (Compressor Overheating) Malfunction Decision Conditions  During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the compressor tank temperature sensor. Malfunction Caused  Faulty compressor tank temperature sensor  2/3 way valve closed ...
  • Page 82 15.4.23 F98 (Input Over Current Detection) Malfunction Decision Conditions  During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is detected by checking the input current value being detected by current transformer (CT) with the compressor running.
  • Page 83 15.4.24 F99 (DC Peak Detection) Malfunction Decision Conditions During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry. Malfunction Caused  DC current peak due to compressor failure. ...

  • Page 84: Disassembly And Assembly Instructions

    16. Disassembly and Assembly Instructions WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 16.1 Disassembly of Parts Open the Intake Grille from the Front Grille by moving the catchers to center (Fig.1).
  • Page 85 To remove the Electronic Controller, release the 6 hooks that hold it to the Control Board (Fig. 4). Fig. 4 Remove the Front Grille by removing the screw A and scr ews B, C & D half way open (Fig. 5). Fig.
  • Page 86 Remove the Fan Motor by release the Fan Motor lead wire connectors and Fan Motor screws (Fig. 8). Fig. 8...

  • Page 87: Outdoor Electronic Controller Removal Procedure

    16.2 Outdoor Electronic Controller Removal Procedure 16.2.1 CU-E12QB4R Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove the Control Board as follows: Fig. 1 Fig. 4 Remove the 8 screws of the Front Panel. Fig.
  • Page 88 16.2.2 CU-E18QB4R Remove the 4 screws of the Top Panel. Remove the Control Board. Fig. 4 Remove the 8 screws of the Electronic Controller. Fig. 1 Remove the 10 screws of the Front Panel. Fig. 5 Fig. 2 Remove the Top Cover of the Electronic Controller.

  • Page 89: Technical Data

    1076 18.4 2811 1869 1092 13.3 2108 2066 1074 15.8 2393 1802 1076 (Dry bulb value based on 46% humidity) 17.1.2 CS-E18QB4RW CU-E18QB4R Indoor (°C) Outdoor DB (°C) 19.0 4499 3327 5533 3899 3544 3020 4800 3625 1450 22.0 7204...

  • Page 90: Heat Mode Performance Data

    3913 1487 4000 1050 4166 1036 4019 2161 2619 1021 3672 1336 4124 4408 1043 4661 1013 17.2.2 CS-E18QB4RW CU-E18QB4R Indoor (°C) Outdoor WB (°C) 2803 1699 2993 1528 4631 2276 4162 1235 3058 4550 1008 2786 1659 3650 1812...

  • Page 91: Service Data

    18. Service Data Service data provided are based on the air conditioner running under rated frequency during forced cooling / forced heating mode. 18.1 Cool Mode Outdoor Air Temperature Characteristic Condition  Indoor room temperature: 27°C DryBulb/19°C Wet Bulb  Unit setting: Standard piping length, forced cooling at 16°C, Hi fan ...
  • Page 92 18.1.2 CS-E18QB4RW CU-E18QB4R...

  • Page 93: Heat Mode Outdoor Air Temperature Characteristic

    18.2 Heat Mode Outdoor Air Temperature Characteristic Condition  Indoor room temperature: 20°C DryBulb/ -°C Wet Bulb  Unit setting: Standard piping length, forced heating at 30°C, Hi fan  Compressor frequency: Rated for Heating operation  Voltage: 230V/240V 18.2.1 CS-E12QB4RW CU-E12QB4R...
  • Page 94 18.2.2 CS-E18QB4RW CU-E18QB4R...

  • Page 95: Piping Length Correction Factor

    18.3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length. 18.3.1 CS-E12QB4RW CU-E12QB4R 18.3.1.1 Cooling Capacity 18.3.1.2 Heating Capacity Note: The graphs show the factor after added right amount of additional refrigerant.
  • Page 96 18.3.2 CS-E18QB4RW CU-E18QB4R 18.3.2.1 Cooling Capacity 18.3.2.2 Heating Capacity Note: The graphs show the factor after added right amount of additional refrigerant.

  • Page 97: Exploded View And Replacement Parts List

    19. Exploded View and Replacement Parts List 19.1 Indoor Unit...
  • Page 98 Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 99 <Model: CS-E12QB4RW CS-E18QB4RW> SAFETY REF. NO. PART NAME & DESCRIPTION CS-E12QB4RW CS-E18QB4RW REMARK BASE PAN ASS’Y CWD52K1100 ← INNER POLYSTYRENE COMPLETE CWG07C1047 ← CABINET SIDE PLATE ASS’Y CWE041121 ← CABINET SIDE PLATE ASS’Y CWE041122 ← LEAD WIRE - FAN MOTOR CWA67C5136 ←...
  • Page 100 SAFETY REF. NO. PART NAME & DESCRIPTION CS-E12QB4RW CS-E18QB4RW REMARK INSTALLATION INSTRUCTION CWF616460 ← CWG86420 ← BASE BOARD-COMPLETE CWG62C1047 ← SHOCK ABSORBER CWG712509 ← SHOCK ABSORBER CWG712510 ← C.C. CASE CWG565693 ← (Note)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).

  • Page 101: Bt20E (Front Grille Complete)

    19.2 CZ-BT20E (Front Grille Complete) Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 102 SAFETY REF. NO. PART NAME & DESCRIPTION CZ-BT20E REMARK FRONT GRILLE - COMPLETE CWE11C3105 A.S MOTOR DC SINGLE 12V 250 OHM CWA981105J BRACKET - A.S.MOTOR CWD932522 VANE CWE241159 SHAFT CWH631038 SHAFT CWH631045 CONNECTOR - SHAFT CWH081007 BEARING CWH641008 PLATE COVER FOR A.S.MOTOR CWD911459 PLATE COVER FOR CONNECTING SHAFT CWD911460...

  • Page 103: Outdoor Unit

    19.3 Outdoor Unit 19.3.1 CU-E12QB4R Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 104 SAFETY REF NO. DESCRIPTION & NAME QTY. CU-E12QB4R REMARK CHASSIS ASSY CWD52K1277 SOUND PROOF MATERIAL CWG302719 FAN MOTOR BRACKET CWD541167 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR ARS6411AC SCREW - FAN MOTOR MOUNT CWH55252J PROPELLER FAN ASSY CWH03K1066 NUT - PROPELLER FAN CWH56053J COMPRESSOR 5RS102XNA21...
  • Page 105 19.3.2 CU-E18QB4R Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 106 SAFETY REF NO. DESCRIPTION & NAME QTY. CU-E18QB4R REMARK CHASSIS ASSY CWD52K1191 ANTI - VIBRATION BUSHING CWH50077 COMPRESSOR 5RD132XBC21 NUT - COMPRESSOR MOUNT CWH561096 SOUND PROOF MATERIAL CWG302656 FAN MOTOR BRACKET CWD541126 FAN MOTOR CWA951620 SCREW - FAN MOTOR BRACKET CWH551217 SCREW - FAN MOTOR MOUNT CWH551040J...

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