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Panasonic CS-W7DKE Service Manual

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Table of Contents
CONTENTS
CS-W7DKE CU-W7DKE
CS-W9DKE CU-W9DKE
CS-W12DKE CU-W12DKE
Page
3
4
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5
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7
© 2004 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
Order No. MAC0408028C2

Air Conditioner

Page
9
11
13
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  Summary of Contents for Panasonic CS-W7DKE

  • Page 1: Table Of Contents

    2.3. Outdoor Unit 4.2. Outdoor Unit 3 Product Specifications 5 Refrigeration Cycle Diagram 3.1. CS-W7DKE CU-W7DKE 6 Block Diagram © 2004 Panasonic HA Air-Conditioning (M) Sdn Bhd (11969-T). All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 2 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 7 Wiring Diagram 12.3. Indoor Fan Motor And Cross Flow Fan Removal 8 Operation Details Procedures 8.1. Heating Operation 12.4. Remote Control Reset 8.2. Cooling Operation 12.5. Auto OFF/ON Button 8.3. Soft Dry Operation 13 Troubleshooting Guide 8.4.
  • Page 3: Features

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 1 Features • High efficiency. • Operation Improvement • Compact design. − Quiet mode to provide quiet operation. • Wider range of horizontal discharge air. − Powerful mode to reach the desired room temperature quickly.
  • Page 4: Functions

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 2 Functions 2.1. Remote Control AUTO SPEED HEAT COOL SWING TIMER TIMER OFF/ON MODE POWERFUL FAN SPEED TEMP QUIET AIR SWING TIMER CANCEL CANCEL CLOCK RESET OFF / ON I TEMP. Operation Start / Stop Room Temperature Setting Heating, Cooling, Soft Dry Operation.
  • Page 5: Indoor Unit

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 2.2. Indoor Unit AUTO OFF / ON Automatic Operation Button Random Auto Restart Control • Unit will be restarted, when resume from power • Press for < 5 second to operate Automatic failure, at previous setting.
  • Page 6: Outdoor Unit

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 2.3. Outdoor Unit Compressor Reverse Rotation Deice Control Protection Control • To prevent frosting at outdoor heat exchanger. (Only for Heating Operation) • To protect compressor from reverse • Temperature of outdoor heat exchanger rotation when there is a instantaneous is sensed by TRS (Thermal Reed Switch).
  • Page 7: Product Specifications

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 3 Product Specifications 3.1. CS-W7DKE CU-W7DKE Unit CS-W7DKE CU-W7DKE Cooling Capacity kW (kcal/h) 2.30 (1,980) BTU/h 7,840 Heating Capacity kW (kcal/h) 2.45 (2,110) BTU/h 8,350 Moisture Removal l/h (Pint/h) 1.5 (3.2) Phase ø...
  • Page 8 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE Unit CS-W7DKE CU-W7DKE Power Cord Length — Number of core-wire 3 (1.5 mm — Dimensions Height inch (mm) 11 - 1/32 (280) 20 - 3/32 (510) Width inch (mm) 31 - 15/32 (799)
  • Page 9: Cs-W9Dke Cu-W9Dke

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 3.2. CS-W9DKE CU-W9DKE Unit CS-W9DKE CU-W9DKE Cooling Capacity kW (kcal/h) 2.75 (2,370) BTU/h 9,380 Heating Capacity kW (kcal/h) 3.05 (2,620) BTU/h 10,400 Moisture Removal l/h (Pint/h) 1.6 (3.4) Phase ø Single Power Source...
  • Page 10 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE Unit CS-W9DKE CU-W9DKE Dimensions Height inch (mm) 11 - 1/32 (280) 20 - 3/32 (510) Width inch (mm) 31 - 15/32 (799) 25 - 19/32 (650) Depth inch (mm) 7 - 7/32 (183)
  • Page 11: Cs-W12Dke Cu-W12Dke

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 3.3. CS-W12DKE CU-W12DKE Unit CS-W12DKE CU-W12DKE Cooling Capacity kW (kcal/h) 3.60 (3,100) BTU/h 12,300 Heating Capacity kW (kcal/h) 3.90 (3,350) BTU/h 13,300 Moisture Removal l/h (Pint/h) 2.1 (4.4) Phase ø Single Power Source...
  • Page 12 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE Unit CS-W12DKE CU-W12DKE Dimensions Height inch (mm) 11 - 1/32 (280) 21 - 1/4 (540) Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780) Depth inch (mm) 7- 7/32 (183)
  • Page 13: Dimensions

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 4 Dimensions 4.1. Indoor Unit & Remote Control 4.1.1. CS-W7DKE CS-W9DKE CS-W12DKE...
  • Page 14: Outdoor Unit

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 4.2. Outdoor Unit 4.2.1. CU-W7DKE CU-W9DKE 4.2.2. CU-W12DKE...
  • Page 15: Refrigeration Cycle Diagram

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 5 Refrigeration Cycle Diagram...
  • Page 16: Block Diagram

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 6 Block Diagram...
  • Page 17 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE...
  • Page 18: Wiring Diagram

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 7 Wiring Diagram...
  • Page 19 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE...
  • Page 20: Operation Details

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8 Operation Details 8.1. Heating Operation • Heating operation can be set using remote control. • This operation is applied to warm the room temperature reaches the setting temperature set on the remote control.
  • Page 21: Cooling Operation

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.2. Cooling Operation • Cooling operation can be set using remote control. • This operation is applied to cool down the room temperature reaches the setting temperature set on the remote control.
  • Page 22: Soft Dry Operation

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.3. Soft Dry Operation • Soft Dry operation can be set using remote control. • Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room. • This operation starts when the intake air temperature sensor reaches the setting temperature on the remote control.
  • Page 23: Automatic Operation

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.4. Automatic Operation • Automatic operation can be set using remote control. • This operation starts to operate with indoor fan at SLo speed for 25 seconds to judge the intake air temperature.
  • Page 24: Operation Control

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE • The operation mode judging temperature and standard setting temperature can be increased by 2°C permanently, by open the circuit of JX1 at indoor electronic controller. 8.5. Operation Control (For 8.5.1 to 8.5.7 information applies only to Cooling and Soft Dry Operation) 8.5.1.
  • Page 25: Compressor Reverse Rotation Protection Control

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.5.4. Anti-Freezing Control • If the temperature of the indoor heat exchanger falls below 2°C continuously for 4 minutes or more, the compressor turns off. The fan speed setting remains the same.
  • Page 26: Minutes Time Save Control

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE (For 8.5.8 to 8.5.16 information applies only to Heating Operation) 8.5.8. Restart Control (Time Delay Safety Control) • When the thermo-off temperature (temperature which compressor stops to operate) is reached during:- − Heating operation - the compressor stops for 3 minutes (minimum) before resume operation.
  • Page 27: Way Valve Control

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.5.11. Overload Protection Control Outdoor Fan Control • If the temperature of the indoor heat exchanger rises to 51°C, outdoor fan stops. The outdoor fan restarts when the indoor heat exchanger temperature falls to 49°C.
  • Page 28 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.5.15. Anti Cold Draft Control • This operation is to prevent the Cold Draft during Heating mode operation. • The operation will start when compressor OFF (Thermo OFF) during Heating operation. • For the first 30 sec. from compressor OFF (Thermo OFF), Indoor fan speed will operate accordingly to the Indoor heat exchanger temperature as shown below: •...
  • Page 29 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE Normal Deicing Time Diagram Overload Deicing Time Diagram...
  • Page 30: Indoor Fan Speed Control

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.6. Indoor Fan Speed Control • Indoor Fan Speed can be set using remote control. 8.6.1. Fan Speed Rotation Chart Fan Speed (rpm) CS-W7DKE CS-W9DKE CS-W12DKE S Hi 1220 1310 1310 1070...
  • Page 31 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE • Auto Fan Speed during cooling operation: 1. Indoor fan will rotate alternately between off and on as shown in below diagram. 2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.
  • Page 32: Outdoor Fan Speed Control

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE • Auto Fan Speed during Heating operation. 1. Indoor fan will rotate in the range of SLo → Me according to the heat exchanger temperature. 8.6.3. Manual Fan Speed Control • Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control.
  • Page 33: Horizontal Airflow Direction Control

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE (Heating Operation condition) Heating Operation • When the piping air temperature reaches 38°C, the louver is changed from upper to lower limit. When the piping air temperature falls to 35°C, the louver is changed from lower to upper limit.
  • Page 34 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE • Vertical Airflow Direction:- − In “Manual” setting, the vane will automatically shift down 5° lower than previous setting. − In “Auto” setting, the vane will automatically shift between upper and lower limit depending on the intake air temperature as Heating Mode, Airflow Direction Auto-Control.
  • Page 35: Quiet Operation

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.11. Quiet Operation • The Quiet operation is to provide quiet cooling/heating operation condition compare to normal operation. (Cooling and Soft Dry Operation condition) • Once the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around 2 dB(A) for Lo fan speed or 3 dB(A) for Hi/Me fan speed against the present sound level operation.
  • Page 36 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE (Heating Operation condition) • When the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around 2 dB (Lo) or 3 dB (Hi, Me), against the present sound level operation.
  • Page 37: Ionizer Operation

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.12. Ionizer Operation • The Ionizer operation is to provide fresh air effect to user by producing minus ion in discharge air. 8.12.1. Operation Control 1. Ionizer individual operation a. When air-conditioner unit is at “OFF” condition (standby) and ION operation button at the remote control is pressed, the Ionizer and indoor fan operations will turn on.
  • Page 38: Timer Control

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8.12.2. Error Detection Control • The error detection control is to inform user that error occurs at ionizer system and repairing job will be needed. • There are two types of error detection control: a.
  • Page 39: Operating Instructions

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 9 Operating Instructions Thank you for purchasing Panasonic Air Conditioner SAFETY PRECAUTIONS I Definition To prevent personal injury, injury to others and property Installation Precautions Installation Precautions damage, the following instructions must be Warning followed.
  • Page 40 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE Note: The illustrations in this manual are for explanation purposes only and may differ from the actual unit. It is subjected to change without notice for future improvement. PRODUCT OVERVIEW I About...
  • Page 41: Operation Modes

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE HOW TO OPERATE I Operation Details Auto, Heat, Cool, Auto, Heat, Cool, Dr y Dr y AUTO - Automatic Operation • The unit will automatically select the operation mode according to the room temperature.
  • Page 42: Fan Speed

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE HOW TO OPERATE I Operations Details Powerful, Powerful, Quiet, Quiet, Ion, Fan Speed, Ion, Fan Speed, POWERFUL • To achieve setting temperature Air Swing Air Swing quickly. It will operate for 15 minutes and return to the previous setting.
  • Page 43 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE HOW TO OPERATE I Operation Details Timer Timer TIMER • Use the ON timer to turn on the air conditioner at the desired time. This will give you a cooling or warming environment, e.g.
  • Page 44 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE CARE & CLEANING I Washing Instructions • Do not use benzene, thinner or Switch off the power supply Switch off the power supply scouring powder. before cleaning before cleaning • Use soaps or neutral household ≃...
  • Page 45: Installation Instructions

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 10 Installation Instructions Required tools for Installation Works 1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter 2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench 18 N.m (1.8 kgf.m)
  • Page 46 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE CAUTION 1. The equipment must be earthed. It may cause electrical shock if grounding is not perfect. 2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire.
  • Page 47 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE Attached accessories Indoor/outdoor Unit Installation Diagram Applicable piping kit CZ-3F5, 7BP (V7DK, V9DK, W7DK, W9DK) CZ-4F5, 7, 10BP (V12DK, W12DK) Select the best location INDOOR UNIT • There should not be any heat source or steam near the unit.
  • Page 48: Indoor Unit

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 10.2. Indoor Unit 10.2.1. SELECT THE BEST LOCATION 10.2.3. TO DRILL A HOLE IN THE WALL (Refer to “Select the best location” AND INSTALL A SLEEVE OF section) PIPING 1. Insert the piping sleeve to the hole.
  • Page 49 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 3. For the embedded piping (This can be used for left rear piping & left bottom piping also.)
  • Page 50 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 10.2.5. CONNECT THE CABLE TO THE INDOOR UNIT 1. The inside and outside connecting cable can be connected without removing the front grille. 2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 (V7DK, V9DK, V12DK) or 5 (W7DK, W9DK, W12DK) ×...
  • Page 51 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE INSTALLATION OF SUPER ALLERU-BUSTER FILTER 1. Open the front panel. 2. Remove the air filter. 3. Remove Supersonic air purifying device. 4. Open the Supersonic air purifying device frame. 5. Insert the super alleru-buster filter and close the Supersonic air purifying device frame as show in illustration at right.
  • Page 52: Outdoor Unit

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 10.3. Outdoor Unit 10.3.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section) 10.3.2. INSTALL THE OUTDOOR UNIT • After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram.
  • Page 53: Evacuation Of The Equipment

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 10.3.4. EVACUATION OF THE EQUIPMENT WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure. 1. Connect a charging hose with a push pin to the Low and High side of a charging set and the service port of the 3-way valve.
  • Page 54: Pipe Insulation

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 10.3.6. PIPE INSULATION 1. 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.
  • Page 55: Installation And Servicing Air Conditioner Using R410A

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 11 Installation And Servicing Air Conditioner Using R410A 11.1. Outline 11.1.1. About R410A Refrigerant 1. Converting air conditioners to R410A Since it was declared in1974 that chlorofluorocarbons (CFC), hydro chlorofluorocarbons (HCFC) and other substances pose a destructive danger to the ozone layer in the earth´s upper stratosphere (20 to 40 km above the earth), measures have been...
  • Page 56: Tools For Installing/Servicing Refrigerant Piping

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE d. R410A refrigerating machine oil Conventionally, mineral oil or a synthetic oil such as alkylbenzene has been used for R22 refrigerating machine oil. Because of the poor compatibility between R410A and conventional oils like mineral oil, however, there is a tendency for the refrigerating machine oil to collect in the refrigerating cycle.
  • Page 57: R410A Tools

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 11.2.2. R410A Tools 1. Copper tube gauge for clearance adjustment (used when flaring with the conventional flaring tool (clutch type)) • This gauge makes it easy to set the clearance for the copper tube to 1.0-1.5 mm from the clamp bar of the...
  • Page 58 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 5. Charging hose • The pressure resistance of the charging hose has been raised to match the higher pressure of R410A. The hose material has also been changed to suit HFC use, and the size of the fitting has been changed to match the manifold ports.
  • Page 59 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 8. Electronic scale for refrigerant charging • Because of the high pressure and fast vaporizing speed of R410A, the refrigerant cannot be held in a liquid phase inside the charging cylinder when charging is...
  • Page 60: Refrigerant Piping Work

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 11.3. Refrigerant Piping Work 11.3.1. Piping Materials It is recommended that you use copper and copper alloy jointless pipes with a maximum oil adherence of 40 mg/10m. Do not use pipes that are crushed, deformed, or discolored (especially the inside surface). If these inferior pipes are used, impurities may clog the expansion valves or capillaries.
  • Page 61 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE Table 11 R410A flaring dimensions Nominal Outside Wall thickness A (mm) diameter diameter (mm) R410A flaring Conventional flaring tool (mm) tool, clutch type Clutch type Wing-nut type 6.35 0 - 0.5 1.0 - 1.5 1.5 - 2.0...
  • Page 62: Installation, Transferring, Servicing

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE b. Copper pipes Use only copper pipes with the thickness given in table 10, and with minimal impurities. Because the surface of the pipe is exposed, you should take special care, and also take measures such as marking the pipes to make sure they are easily distinguished from other piping materials, to prevent mistaken use.
  • Page 63 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 11.4.2. Transferring (Using New Refrigerant Piping) 1. Removing the unit a. Collecting the refrigerant into the outdoor unit by pumping down The refrigerant can be collected into the outdoor unit (pumping down) by pressing the TEST RUN button, even when the temperature of the room is low.
  • Page 64 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 11.4.5. Recharging Refrigerant During Servicing When recharging is necessary, insert the specified amount of new refrigerant in accordance with the following procedure. 1. Connect the charging hose to the service port of the outdoor unit.
  • Page 65 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 11.4.6. Brazing As brazing requires sophisticated techniques and experiences, it must be performed by a qualified person. In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting dry nitrogen gas (N ) flow.
  • Page 66: Servicing Information

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 12 Servicing Information 12.1. Distinction Of Lead Free (PbF) Printed Circuit Board • Printed circuit boards (manufactured) using lead free solder will have a PbF stamp on the Printed Circuit board. CAUTION •...
  • Page 67: Indoor Fan Motor And Cross Flow Fan Removal

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE Fig. 5 Fig. 4 − Press the hook to the right then take out the PCB. (Fig. − To remove the electronic controller. − Release CN-FM connectors. (Fig. 4) − Release Ry-Pwr connector (black and brown) and Ac- −...
  • Page 68: Remote Control Reset

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE − Release the generator complete wire (green and red). (Fig. 8) − Remove 2 screws on the right and 1 screw at the left side of the control board. (Fig. 7) − Press down the hook on the left side of control board.
  • Page 69: Auto Off/On Button

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 12.5. Auto OFF/ON Button • The “Auto OFF/ON Button” (behind the front grille) is used to operate the air conditioner if remote control is misplaced or mulfunctioning. • Forced cooling operation is possible by pressing the “Auto OFF/ON Button” for more than 5s where “beep” sound is heard then release the button.
  • Page 70: Troubleshooting Guide

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 13 Troubleshooting Guide 13.1. Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan.
  • Page 71: Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 13.2. Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current Cooling Mode Heating Mode Condition of the air conditoner Low Pressure High Pressure Electric current Low Pressure High Pressure...
  • Page 72: Technical Data

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 14 Technical Data 14.1. Thermostat Characteristics 14.1.1. CS-W7DKE CS-W9DKE CS-W12DKE...
  • Page 73: Sensible Capacity Chart

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 14.2. Sensible Capacity Chart 14.2.1. G CS-W7DKE 230V Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 2.28 1.73 0.65 2.13 1.66 0.70 1.98 1.59 0.75 1.80 1.51 0.81 19.0°C 2.30 0.71 19.5°C 2.50...
  • Page 74: Operation Characteristics

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 14.3. Operation Characteristics 14.3.1. CS-W7DKE CU-W7DKE...
  • Page 75 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 14.3.2. CS-W9DKE CU-W9DKE...
  • Page 76 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 14.3.3. CS-W12DKE CU-W12DKE...
  • Page 77: Exploded View (Indoor Unit)

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 15 Exploded View (Indoor Unit) 15.1. CS-W7DKE CS-W9DKE CS-W12DKE 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 78: Replacement Parts List (Indoor Unit)

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 16 Replacement Parts List (Indoor Unit) 16.1. CS-W7DKE CS-W9DKE CS-W12DKE REF. NO. PART NAME & DESCRIPTION QTY. CS-W7DKE CS-W9DKE CS-W12DKE REMARKS ← ← CHASSY COMPLETE CWD50C1377 ← ← FAN MOTOR CWA921181 ←...
  • Page 79: Exploded View (Outdoor Unit)

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 17 Exploded View (Outdoor Unit) 17.1. CU-W7DKE CU-W9DKE 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 80: Cu-W12Dke

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 17.2. CU-W12DKE 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 81: Replacement Parts List (Outdoor Unit)

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 18 Replacement Parts List (Outdoor Unit) 18.1. CU-W7DKE CU-W9DKE REF. NO. PART NAME & DESCRIPTION QTY. CU-W7DKE CU-W9DKE REMARKS ← CHASSY ASS’Y CWD50K2112 ← SOUND PROOF MATERIAL CWG302255 ← FAN MOTOR BRACKET CWD541073 ←...
  • Page 82: Cu-W12Dke

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 18.2. CU-W12DKE REF. NO. PART NAME & DESCRIPTION QTY. CU-W12DKE REMARKS CHASSY ASS’Y CWD50K2073 SOUND PROOF MATERIAL CWG302088 FAN MOTOR BRACKET CWD541030 SCREW - FAN MOTOR BRACKET CWH551059 FAN MOTOR CWA951117 SCREW - FAN MOTOR MOUNT CWH55406 PROPELLER FAN ASS’Y...
  • Page 83: Electronic Circuit Diagram

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 19 Electronic Circuit Diagram 19.1. Indoor Unit & Outdoor Unit SCHEMATIC DIAGRAM 1/4 ELECTRONIC CONTROL UNIT Auto C143XKTX BZ01 SW01 0.01µ SUPERSONIC COMPLETE 5.1k 0.01µ CN-SONIC R602 CN-SONIC C601 5.1k IC601 0.1µ...
  • Page 84 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE SCHEMATIC DIAGRAM 2/4 1000p RY-PWR DRIVE SIGNAL STEPPING MOTOR AUTO OPERATION DRIVE TEST RUN SIGNAL REMOTE CONTROL SOUND INTP2 BUZZER POWER CLOCK INPUT INTP1 DISPLAY REMOTE-CONTROL COMMAND INPUT INTP0 Vss1 IC01 R06 24k...
  • Page 85 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE SCHEMATIC DIAGRAM 3/4 IC04 IC03 REGULATOR REGULATOR DB01 3300µ 470µ 100µ 1.3k SSR02 C143XKTX RY-PWR 0.1µ 1.6k 4.7k FUSE T 2A L 250V TEMPERATURE ZNR01 0.047µ FUSE AC-WHT SSR01 C143XKTX CR01 4.7k 125µH...
  • Page 86 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE SCHEMATIC DIAGRAM 4/4 ELECTROLYTIC CU-W7DKE, CU-W9DKE COIL REVERSING CAPACITOR VALVE BL/B BL/B MAGNETIC RELAY MOTOR CAPACITOR TO INDOOR OVER LOAD PROTECTOR COMPRESSOR CU-W12DKE COIL REVERSING ELECTROLYTIC VALVE CAPACITOR MAGNETIC RELAY A BL/B...
  • Page 87 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE...
  • Page 88 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE How to use electronic circuit diagram TIMER TABLE Test Mode Name Time (When test point Remarks Short-circuited) Real Timer 1 hr. 1 min. 10 min. 10 sec. 1 min. 1 sec. Time Delay Safety Control 2 min.
  • Page 89: Remote Control

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 19.2. Remote Control...
  • Page 90: Print Pattern Indoor Unit Printed Circuit Board

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 19.3. Print Pattern Indoor Unit Printed Circuit Board BOTTOM VIEW...
  • Page 91 CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE TOP VIEW...
  • Page 92: Print Pattern Indicator & Receiver Printed Circuit Board

    CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE 19.4. Print Pattern Indicator & Receiver Printed Circuit Board BOTTOM VIEW TOP VIEW [PHAAM] Printed in Malaysia...

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