Panasonic CS-E9PB4EA Service Manual
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Panasonic CS-E9PB4EA Service Manual

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Please file and use this manual together with the Service Manual for Model No. CU-2E15PBE, CU-2E18PBE, CU-3E18PBE,
CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, Order No. PAPAMY1301048CE, PAPAMY1303046CE
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-E9PB4EA
CS-E12PB4EA
Order No: PAPAMY1305053CE

Air Conditioner

Outdoor Unit
CU-E9PB4EA
CU-E12PB4EA
Destination
Europe
© Panasonic Corporation 2013.

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Summary of Contents for Panasonic CS-E9PB4EA

  • Page 1: Air Conditioner

    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 2013.

  • Page 2: Table Of Contents

    Outdoor Unit ..........26 Procedure ...........98 6. Refrigeration Cycle Diagram ......27 17. Service Data ........... 100 CS-E9PB4EA CU-E9PB4EA ..... 27 17.1 Cool Mode Outdoor Air Temperature CS-E12PB4EA CU-E12PB4EA ....28 Characteristic ........... 100 17.2 Heat Mode Outdoor Air Temperature 7.

  • 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. The caution items stated here must be followed because these important contents are related to safety.
  • 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-E9PB4EA Model Outdoor CU-E9PB4EA Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.85 2.50 3.00 0.85 2.50 3.00 Capacity BTU/h 2900 8530 10200 2900 8530 10200 kcal/h 2150 2580...
  • Page 6 Indoor CS-E9PB4EA Model Outdoor CU-E9PB4EA Type Hermetic Motor (Rotary) Compressor Motor Type Brushless (4 poles) Output Power Type SIROCCO FAN Material Motor Type DC / Transistor (8-poles) Input Power – Output Power Cool Heat Cool Heat Cool Speed Heat Cool...
  • Page 7 Indoor CS-E9PB4EA Model Outdoor CU-E9PB4EA Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) Standard length m (ft) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) I/D & O/D Height different m (ft) 15.0 (49.2)
  • Page 8 Indoor CS-E12PB4EA Model Outdoor CU-E12PB4EA Performance Test Condition EUROVENT 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 9 Indoor CS-E12PB4EA Model Outdoor CU-E12PB4EA Type Hermetic Motor (Rotary) Compressor Motor Type Brushless (4 poles) Output Power Type SIROCCO FAN Material Motor Type DC / Transistor (8-poles) Input Power – Output Power Cool Heat Cool Heat Cool Speed Heat Cool Heat Cool Heat...
  • Page 10 Indoor CS-E12PB4EA Model Outdoor CU-E12PB4EA Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) Standard length m (ft) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) I/D & O/D Height different m (ft) 15.0 (49.2) Additional Gas Amount...
  • Page 11 CS-XE7PKEW CS-E9PKEW CS-XE9PKEW CS-ME9PD3EA CS-ME9PB4EA 2.5kW ● ● ● ● ● ● ● ● ● ● ● CS-E9GFEW CS-E9GFEW-2 CS-E9PD3EA CS-E9PB4EA CS-E12PKEW CS-XE12PKEW CS-ME12PD3EA CS-ME12PB4EA 3.2kW ● ● ● ● ● ● ● ● ● ● ● CS-E12GFEW CS-E12GFEW-2 CS-E12PD3EA...
  • Page 12 ● ● CS-XE7PKEW CS-E9PKEW CS-XE9PKEW CS-ME9PD3EA CS-ME9PB4EA 2.5kW ● ● ● ● ● ● ● ● ● CS-E9GFEW CS-E9GFEW-2 CS-E9PD3EA CS-E9PB4EA CS-E12PKEW CS-XE12PKEW CS-ME12PD3EA CS-ME12PB4EA 3.2kW ● ● ● ● ● ● ● ● ● CS-E12GFEW CS-E12GFEW-2 CS-E12PD3EA CS-E12PB4EA CS-E15PKEW 4.0kW...
  • Page 13 Indoor Unit : CS-ME5PKE, CS-E7/9/12PKEW, CS-E9/12GFEW, CS-ME9/12PB4EA, CS-ME9/12PD3EA, CS-E9/12PD3EA, CS-E9/12PB4EA Outdoor Unit : CU-2E15PBE 2 Room 1 Room Indoor Unit Capacity (kW) Total Indoor Capacity (kW) Indoor Unit Capacity (kW) Total Indoor Capacity (kW) 1.6 + 1.6 1.6 + 2.0 1.6 + 2.5 1.6 + 2.8 1.6 + 3.2...
  • Page 14 Indoor Unit : CS-ME5PKE, CS-E7/9/12/15/18PKEW, CS-E9/12/18GFEW, CS-ME9/12/18PB4EA, CS-ME9/12/18PD3EA, CS-E9/12PD3EA, CS-E9/12PB4EA Outdoor Unit : CU-3E18PBE 3 Room 2 Room 1 Room Indoor Unit Capacity Total Indoor Capacity Indoor Unit Capacity Total Indoor Capacity Indoor Unit Capacity Total Indoor Capacity (kW) (kW) (kW) (kW) (kW)
  • Page 15 Indoor Unit : CS-ME5PKE, CS-E7/9/12/15/18/21PKEW, CS-E9/12/18GFEW, CS-ME9/12/18/21PB4EA, CS-ME9/12/18PD3EA, CS-E9/12PD3EA, CS-E9/12PB4EA Outdoor Unit : CU-4E23PBE 4 Room 3 Room 2 Room 1 Room Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW)
  • Page 16 4 Room 3 Room 2 Room 1 Room Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) 2.0 + 2.0 + 2.5 + 2.8 2.5 + 2.5 + 4.0 2.0 + 2.0 + 2.5 + 3.2...
  • Page 17 Indoor Unit : CS-E7/9/12/15/18/21/24PKEW, CS-E9/12/18GFEW, CS-ME9/12/18/21PB4EA, CS-ME9/12/18PD3EA, CS-E9/12PD3EA, CS-E9/12PB4EA Outdoor Unit : CU-4E27PBE 4 Room 3 Room 2 Room 1 Room Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW)
  • Page 18 4 Room 3 Room 2 Room 1 Room Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) 2.5+2.5+2.5+4.0 11.5 2.8+2.8+4.0...
  • Page 19 Indoor Unit : CS-E7/9/12/15/18/21/24PKEW, CS-E9/12/18GFEW, CS-ME9/12/18/21PB4EA, CS-ME9/12/18PD3EA, CS-E9/12PD3EA, CS-E9/12PB4EA Outdoor Unit : CU-5E34PBE 5 Room 4 Room 3 Room 2 Room 1 Room Total Indoor Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Capacity Indoor Unit Capacity Capacity...
  • Page 20 5 Room 4 Room 3 Room 2 Room 1 Room Total Indoor Total Indoor Indoor Unit Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Indoor Unit Capacity Indoor Unit Capacity Capacity Capacity Capacity Capacity Capacity Capacity Capacity (kW) Capacity (kW) (kW) (kW)
  • Page 21 5 Room 4 Room 3 Room 2 Room 1 Room Total Indoor Total Indoor Indoor Unit Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Indoor Unit Capacity Indoor Unit Capacity Capacity Capacity Capacity Capacity Capacity Capacity Capacity (kW) Capacity (kW) (kW) (kW)
  • Page 22 5 Room 4 Room 3 Room 2 Room 1 Room Total Indoor Total Indoor Indoor Unit Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Indoor Unit Capacity Indoor Unit Capacity Capacity Capacity Capacity Capacity Capacity Capacity Capacity (kW) Capacity (kW) (kW) (kW)

  • Page 23: Features

    3. Features Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control Environment Protection Non-ozone depletion substances refrigerant (R410A) Long Installation Piping Long piping up to 20 meters Easy to use remote control Quality Improvement Random auto restart after power failure for safety restart operation Gas leakage protection Prevent compressor reverse cycle...

  • Page 24: Location Of Controls And Components

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

  • Page 25: Dimensions

    5. Dimensions Indoor Unit...

  • Page 26: Outdoor Unit

    Outdoor Unit 5.2.1 CU-E9PB4EA 5.2.2 CU-E12PB4EA...

  • Page 27: Refrigeration Cycle Diagram

    6. Refrigeration Cycle Diagram CS-E9PB4EA CU-E9PB4EA...

  • Page 28: Cs-E12Pb4Ea Cu-E12Pb4Ea

    CS-E12PB4EA CU-E12PB4EA...

  • Page 29: Block Diagram

    7. Block Diagram CS-E9PB4EA CU-E9PB4EA...

  • Page 30: Cs-E12Pb4Ea Cu-E12Pb4Ea

    CS-E12PB4EA CU-E12PB4EA...

  • Page 31: Wiring Connection Diagram

    8. Wiring Connection Diagram Indoor Unit...

  • Page 32: Outdoor Unit

    Outdoor Unit 8.2.1 CU-E9PB4EA Resistance of Compressor Windings MODEL CU-E9PB4EA CONNECTION 5RD132XBE21 (Ω) 1.897 1.907 1.882 Note: Resistance at 20°C of ambient temperature.
  • Page 33 8.2.2 CU-E12PB4EA Resistance of Compressor Windings MODEL CU-E12PB4EA CONNECTION 5RD132XBA21 (Ω) 1.897 1.907 1.882 Note: Resistance at 20°C of ambient temperature.

  • Page 34: Electronic Circuit Diagram

    9. Electronic Circuit Diagram Indoor Unit...

  • Page 35: Outdoor Unit

    Outdoor Unit 9.2.1 CU-E9PB4EA...
  • Page 36 9.2.2 CU-E12PB4EA...

  • Page 37: Printed Circuit Board

    10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board...
  • Page 38 10.1.2 Display Printed Circuit Board...

  • Page 39: Outdoor Unit

    10.2 Outdoor Unit 10.2.1 CU-E9PB4EA...
  • Page 40 10.2.2 CU-E12PB4EA...

  • Page 41: 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 42: Installation Of Indoor Unit

    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 43: Indoor Unit Drain Piping

    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 44: Heat Insulation

    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 45: Installation Of Decorative Panel

    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 46 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 47: 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 48: Connect The Piping

    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 49: Connect The Cable To The Outdoor Unit

    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 50 11.2.6.1 Cutting and Flaring the Piping Please cut using pipe cutter and then remove the burrs. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. Please make flare after inserting the flare nut onto the copper pipes.
  • Page 51 Remo-Con No. Change in Remote Control Remove the batteries from the battery compartment of the Remote Control. On the left side of the battery compartment, there is a small opening in the centre in which Jumper (J_A) can be seen. In the accepted Remo-Con PCB shown beside, Jumper (J_B) can be seen.

  • Page 52: 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 53: 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 54: 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 55: 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 56: 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: POWERFUL/QUIET button is pressed again.

  • Page 57: 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 58: 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. This control is not applicable if the power supply is cut off and on again.
  • Page 59 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 60: 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. Compressor frequency will adjust base on outdoor air temperature.

  • Page 61: 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 Depends on compressor conditions: 1.

  • Page 62: 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 63: 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 64: 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. 14.3.1 CU-E9PB4EA...
  • Page 65 14.3.2 CU-E12PB4EA...

  • Page 66: 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 67 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 (gas leakage) Clogged capillary tube or Strainer...

  • Page 68: 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 69: 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 abnormal start by entering communication not Indoor/outdoor PCB...
  • Page 70 Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation Outdoor cooling high 4 times happen Cooling high pressure Check refrigeration system — pressure protection within 20 minutes protection Outdoor air circuit Power transistor 4 times happen Power transistor module PCB faulty module overheating...

  • Page 71: 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. Faulty outdoor unit PCB.
  • Page 72 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. Indoor unit or outdoor unit PCBs defective. Indoor-outdoor unit signal transmission error due to wrong wiring.
  • Page 73 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. Faulty sensor.
  • Page 74 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. Faulty PCB. Troubleshooting...
  • Page 75 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) Broken Outdoor PCB Troubleshooting...
  • Page 76 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 Operation stops due to short circuit inside the fan motor winding.
  • Page 77 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. Faulty sensor. Faulty PCB.
  • Page 78 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. Faulty sensor.
  • Page 79 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. Faulty sensor. Faulty PCB.
  • Page 80 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. Faulty sensor. Faulty PCB.
  • Page 81 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. Faulty sensor. Faulty PCB.
  • Page 82 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. Troubleshooting...
  • Page 83 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. Operation stops due to breaking of wire inside the fan motor.
  • Page 84 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. Phenomena: unit is stopping and re-starting very often in heating mode.
  • Page 85 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 Air short circuit at indoor unit Clogged indoor unit air filter Dust accumulation on the indoor unit heat exchanger...
  • Page 86 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 Indoor heat exchanger (pipe) thermistor 4-way valve malfunction Troubleshooting...
  • Page 87 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 88 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 89 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 90 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 Outdoor heat exchanger temperature rise due to short-circuit of hot discharge air flow. Outdoor heat exchanger temperature rise due to defective of outdoor fan motor.
  • Page 91 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 92 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 Refrigerant shortage (refrigerant leakage) Faulty outdoor unit PCB Faulty compressor Troubleshooting...
  • Page 93 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 94 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. DC current peak due to defective power transistor(s).

  • Page 95: 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 96 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 97 Remove the Fan Motor by release the Fan Motor lead wire connectors and Fan Motor screws (Fig. 8). Fig. 8...

  • Page 98: Outdoor Electronic Controller Removal Procedure

    16.2 Outdoor Electronic Controller Removal Procedure 16.2.1 CU-E9PB4EA 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 99 16.2.2 CU-E12PB4EA 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 100: Service Data

    17.1 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 Compressor frequency: Rated for cooling operation Voltage: 220V/230V 17.1.1 CS-E9PB4EA CU-E9PB4EA 230V 220V 15.50 15.00 14.50 14.00 13.50...
  • Page 101 17.1.2 CS-E12PB4EA CU-E12PB4EA 220V 230V 15.00 14.00 13.00 12.00 11.00 10.00 Outdoor Air Temperature (°C) 5.00 4.50 4.00 3.50 3.00 2.50 2.00 Outdoor Air Temperature (°C) 1.20 1.00 0.80 0.60 Outdoor Air Temperature (°C)

  • Page 102: 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: 220V/230V 17.2.1 CS-E9PB4EA CU-E9PB4EA 220V 230V Outdoor Air Temperature (°C) 4.50 4.00 3.50 3.00...
  • Page 103 17.2.2 CS-E12PB4EA CU-E12PB4EA 220V 230V Outdoor Air Temperature (°C) 8.00 7.50 7.00 6.50 6.00 5.50 5.00 4.50 4.00 Outdoor Air Temperature (°C) Outdoor Air Temperature (°C)

  • Page 104: Piping Length Correction Factor

    17.3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length. 17.3.1 CS-E9PB4EA CU-E9PB4EA 17.3.1.1 Cooling Capacity 1.10 1.00 Range of additional refrigerant charge 0.90 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Piping length (m) 17.3.1.2...
  • Page 105 17.3.2 CS-E12PB4EA CU-E12PB4EA 17.3.2.1 Cooling Capacity 1.10 1.00 Range of additional refrigerant charge 0.90 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Piping length (m) 17.3.2.2 Heating Capacity 1.10 1.00 Range of additional refrigerant charge...

  • Page 106: Exploded View And Replacement Parts List

    18. Exploded View and Replacement Parts List 18.1 Indoor Unit...
  • Page 107 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 108 <Model: CS-E9PB4EA CS-E12PB4EA> SAFETY REF. NO. PART NAME & DESCRIPTION CS-E9PB4EA CS-E12PB4EA 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 109 SAFETY REF. NO. PART NAME & DESCRIPTION CS-E9PB4EA CS-E12PB4EA REMARK INSTALLATION INSTRUCTION CWF615950 ← INSTALLATION INSTRUCTION CWF615951 ← INSTALLATION INSTRUCTION CWF615952 ← INSTALLATION INSTRUCTION CWF615953 ← INSTALLATION INSTRUCTION CWF615954 ← INSTALLATION INSTRUCTION CWF615955 ← INSTALLATION INSTRUCTION CWF615956 ← INSTALLATION INSTRUCTION CWF615957 ←...

  • Page 110: Cz-Bt20E (Front Grille Complete)

    18.2 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 111 SAFETY REF. NO. PART NAME & DESCRIPTION PART NO. 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 112: Outdoor Unit

    18.3 Outdoor Unit 18.3.1 CU-E9PB4EA 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 113 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-E9PB4EA REMARK CHASSIS COMPLETE CWD52K1277 SOUND PROOF MATERIAL CWG302742 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...
  • Page 114 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-E9PB4EA REMARK HOLDER SENSOR CWH32143 HOLDER SENSOR CWH321096 (NOTE) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
  • Page 115 18.3.2 CU-E12PB4EA 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 116 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-E12PB4EA REMARK CHASSIS COMPLETE CWD52K1261 ANTI - VIBRATION BUSHING CWH50077 COMPRESSOR 5RD132XBA21 NUT - COMPRESSOR MOUNT CWH56000J SOUND PROOF MATERIAL CWG302744 FAN MOTOR BRACKET CWD541153 FAN MOTOR ARW8401AC SCREW - FAN MOTOR BRACKET CWH551217 SCREW - FAN MOTOR MOUNT CWH551106J...
  • Page 117 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-E12PB4EA REMARK PACKING - L. TUBE CWB81012 HOLDER SENSOR CWH32143 (NOTE) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock. Printed in Malaysia FY0513-0...

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