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CONTENTS
CS-C18DKD CU-C18DKD
CS-C24DKD CU-C24DKD
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© 2004 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
Order No. MAC0411054C3

Air Conditioner

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Summary of Contents for Panasonic CS-C18DKD

  • Page 1: Table Of Contents

    6 Block Diagram 3 Product Specifications 7 Wiring Diagram 3.1. CS-C18DKD CU-C18DKD 8 Operation Details 3.2. CS-C24DKD CU-C24DKD 8.1. Cooling Operation © 2004 Panasonic HA Air-Conditioning (M) Sdn Bhd (11969-T). All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 2: Features

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8.2. Soft Dry Operation 12.2. Cross Flow Fan and Indoor Fan Motor Removal 8.3. Automatic Operation Procedures 8.4. Operation Control 12.3. Remote Control Reset 8.5. Indoor Fan Speed Control 12.4. Auto OFF/ON Button 8.6. Outdoor Fan Speed Control 13 Troubleshooting Guide 8.7.
  • Page 3: Functions

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 2 Functions 2.1. Remote Control OFF / ON TEMP. Operation Start/Stop Room Temperature Setting Cooling, Soft Dry Operation. MODE • Increase or decrease set temperature Operation Mode Selection (16°C to 30°C) • Automatic Operation AUTO Automatic Operation •...
  • Page 4: Indoor Unit

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 2.2. Indoor Unit AUTO OFF / ON Automatic Operation Button Quiet Operation • Press for < 5 second to operate Automatic • To provide quiet operation. operation mode.Use when the remote control cannot be used.
  • Page 5: Outdoor Unit

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 2.3. Outdoor Unit Compressor Reverse Rotation Protection Control • To protect compressor from reverse rotation when there is an instantaneous power failure. Overload Protector • Inner protector. 60 Secs. Forced Operation Control • Once the compressor is activated, it does not stop within the first 60 secs.
  • Page 6: Product Specifications

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 3 Product Specifications 3.1. CS-C18DKD CU-C18DKD Unit CS-C18DKD CU-C18DKD Power Source (Phase, Voltage, Cycle) , V, Hz Single, 220 - 230, 50 Cooling Capacity kW (BTU/h) 5.30 (18,100) - 5.30 (18,100) Moisture Removal l/h (Pint/h) 2.9 (6.1)
  • Page 7 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD Unit CS-C18DKD CU-C18DKD Refrigeration Oil — SUNISO 4GSI Refrigerant (R-22) g (oz) — 980 (34.6) Thermostat — — Protection Device — Inner Protector Capillary Tube Length — Flow Rate l/min — 21.0 Inner Diameter —...
  • Page 8: Cs-C24Dkd Cu-C24Dkd

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 3.2. CS-C24DKD CU-C24DKD Unit CS-C24DKD CU-C24DKD Power Source (Phase, Voltage, Cycle) , V, Hz Single, 220 - 230, 50 Cooling Capacity kW (BTU/h) 7.03 (24,000) - 7.03 (24,000) Moisture Removal l/h (Pint/h) 4.0 (8.5) Airflow Method...
  • Page 9 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD Unit CS-C24DKD CU-C24DKD Protection Device — Inner Protector Capillary Tube Length — Flow Rate l/min — 22.0 Inner Diameter — Air Filter Material P.P. — Style Honeycomb Capacity Control Capillary Tube Compressor Capacitor µF, VAC —...
  • Page 10: Dimensions

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 4 Dimensions 4.1. Indoor Unit & Remote Control 4.1.1. CS-C18DKD CS-C24DKD...
  • Page 11: Outdoor Unit

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 4.2. Outdoor Unit 4.2.1. CU-C18DKD...
  • Page 12 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 4.2.2. CU-C24DKD...
  • Page 13: Refrigeration Cycle Diagram

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 5 Refrigeration Cycle Diagram...
  • Page 14: Block Diagram

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 6 Block Diagram...
  • Page 15: Wiring Diagram

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 7 Wiring Diagram...
  • Page 16 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD...
  • Page 17: Operation Details

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8 Operation Details 8.1. 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 18: Soft Dry Operation

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8.2. 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 19: Automatic Operation

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8.3. Automatic Operation • Automatic operation can be set using remote control. • This operation starts to operate with indoor fan at SLo speed for 20 seconds to judge the intake air temperature. • After judged the temperature, the operation mode is determined by refering to the below standard.
  • Page 20: Operation Control

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8.4. Operation Control (For 8.4.1. to 8.4.7. information applies only to Cooling and Soft Dry Operation) 8.4.1. Restart Control (Time Delay Safety Control) • When the thermo-off temperature (temperature which compressor stops to operate) is reached during:- −...
  • Page 21: Compressor Reverse Rotation Protection Control

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8.4.5. Compressor Reverse Rotation Protection Control • If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and indoor heat exchanger is 2.5°C or less for continuous 2 minutes, compressor will stop and restart automatically.
  • Page 22 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 2. Norrowing Vertical Airflow Direction − During Anti-dew condensation prevention, Airflow Direction Auto-control angle change from 10° - 38° to 10° - 27° under Cooling and Soft Dry operation mode. − During Anti-dew condensation prevention, Airflow Direction Manual control angle change from 10°, 14°, 18°, 22°, 27° to 10°, 13°, 16°, 19°, 22°...
  • Page 23: Indoor Fan Speed Control

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8.5. Indoor Fan Speed Control • Indoor Fan Speed can be set using remote control. 8.5.1. Fan Speed Rotation Chart SPEED / COOL / DRY C24DK C18DK S Hi 1590 1420 1530 1360 1390 1250...
  • Page 24: Outdoor Fan Speed Control

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD • Auto Fan Speed during Soft Dry operation: 1. Indoor fan will rotate alternately between off and Lo-. 2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.
  • Page 25: Horizontal Airflow Direction Control

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8.7.2. Manual Control • When the vertical airflow direction is set to Manual using the remote control, the automatic airflow is released and the airflow direction louver move up and down in the range shown in the diagram.
  • Page 26: Quiet Operation

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD • Powerful operation stops when:- - Powerful operation has operate for 15 minutes. - Powerful mode button is pressed again. - Stopped by OFF/ON operation button. - Timer OFF activates. - Quiet mode button is pressed.
  • Page 27: Ionizer Operation

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8.11. Ionizer Operation • The Ionizer operation is to provide fresh air effect to user by producing minus ion in discharge air. 8.11.1. 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 Fan operations will turn on.
  • Page 28: Timer Control

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8.11.2. 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. When Ionizer is ON −...
  • Page 29: Operating Instructions

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 9 Operating Instructions...
  • Page 30 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD...
  • Page 31 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD...
  • Page 32 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD...
  • Page 33 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD...
  • Page 34 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD...
  • Page 35: Installation Instructions

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 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. Gauge manifold 3. Electric drill, hole core drill 7.
  • Page 36 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 1. This 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 37 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD Attached accessories Indoor/Outdoor Unit Installation Diagram Applicable piping kit CZ-4F5, 7, 10AN (C18DK) SELECT THE BEST LOCATION INDOOR UNIT • There should not be any heat source or steam near the unit. • There should not be any obstacles blocking the air circulation.
  • Page 38: Indoor Unit

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 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 39 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 3. For the embedded piping...
  • Page 40: Connect The Cable To The Indoor Unit

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 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 × 2.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.
  • Page 41 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD HOW TO TAKE OUT FRONT GRILLE AUTO SWITCH OPERATION Please follow the steps below to take out front grille if The below operations will be performed by pressing the necessary such as when servicing. “AUTO” switch.
  • Page 42: Outdoor Unit

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 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. 1. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut.
  • Page 43: Evacuation Of The Equipment

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 10.3.4. EVACUATION OF THE EQUIPMENT 1. Connect a charging hose with a push pin to the Low side Note : BE SURE TO FOLLOW THIS PROCEDURE IN of a charging set and the service port of the 3-way valve.
  • Page 44: Pipe Insulation

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 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. 2. 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 45: 11 3-Way Valve

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 11 3-way Valve 3-way Valve (Liquid Side) 3-way Valve (Gas Side) Works Shaft Position Service Port Shaft Position Service Port Shipping Closed Closed Closed Close (With valve cap) (With cap) (With valve cap) (With cap)
  • Page 46: Air Purging Of The Piping And Indoor Unit

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 11.1. Air Purging of the Piping and Indoor Unit 11.1.1. Air purging Required tools: Hexagonal wrench, adjustable wrench, The air in the indoor unit and in the piping must be purged. If air torque wrenches, wrench to hold the...
  • Page 47: Pumping Down

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 11.1.2. Pumping down Procedure: 1. Confirm that both the 3-way valves are set to the open 6. Operate the air conditioner at the cooling cycle and position. stop it when the gauge indicates 0.1 MPa.
  • Page 48 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 11.1.3. Re-air purging (Re-installation) Procedure: 1. Remove the cap nut from 3-way valves. 5. Check for gas leakage. • Remove the cap nut from 3-way valves after carefully • Check the flare connections for gas leakage.
  • Page 49 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 11.1.4. Balance refrigerant of the 3-way valves Procedure: 1. Confirm that both the 3-way valves are set to the open position. 2. Connect the manifold gauge to the gas side (Low side) 3-way valve’s port.
  • Page 50 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 11.1.5. Evacuation (No refrigerant in the refrigeration cycle) Procedure: 1. Connect the vacuum pump to the manifold gauge’s centre hose. 2. Evacuation for approximately one hour. • Confirm that the gauge needle has moved toward -0.01 MPa.
  • Page 51: Gas Charging

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 11.1.6. Gas charging (After Evacuation) Procedure: 1. Connect the charge hose to the gas charging cylinder. 4. Immediately disconnect the charge hose from the 3-way valve’s service port. • Connect the charge hose which you disconnected from •...
  • Page 52: Servicing Information

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 12 Servicing Information Caution: • Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please use a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
  • Page 53: Cross Flow Fan And Indoor Fan Motor Removal Procedures

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 12.2. Cross Flow Fan and Indoor Fan Motor Removal Procedures 1. In order to remove the Cross Flow Fan and Indoor Fan Motor, Control Board need to be taken out by releasing all the connectors as indicated below.
  • Page 54: Remote Control Reset

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 8. Push up the Evaporator and pull out the Cross Flow Fan from shaft. By then, Fan Motor can be taken out. (Fig. 9) REMINDER - To reinstall the Fan Motor, put it back in place, adjust the position of the Fan Motor’s leadwire...
  • Page 55: Auto Off/On Button

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 12.4. 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 malfunctioning. • 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 56: Troubleshooting Guide

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 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 57: Diagnosis Methods Of A Malfunction Of A Compressor

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 13.1.1. Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Condition of the air conditioner Low Pressure High Pressure Electric current during operation Insufficient refrigerant (gas leakage) Clogged capillary tube or...
  • Page 58: Technical Data

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 14 Technical Data 14.1. Thermostat characteristics 14.2. Operation characteristics...
  • Page 59 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD...
  • Page 60: Exploded View (Indoor Unit)

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 15 Exploded View (Indoor Unit) 15.1. CS-C18DKD CS-C24DKD 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 61: Replacement Parts List (Indoor Unit)

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 16 Replacement Parts List (Indoor Unit) 16.1. CS-C18DKD CS-C24DKD REF. NO. PART NAME & DESCRIPTION QTY. CS-C18DKD CS-C24DKD REMARKS ← CHASSY COMPLETE CWD50C1382 ← FAN MOTOR CWA981149 ← CROSS FLOW FAN COMPLETE CWH02C1010 ← SCREW - CROSS FLOW FAN CWH4580304 ←...
  • Page 62: Exploded View (Outdoor Unit)

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 17 Exploded View (Outdoor Unit) 17.1. CU-C18DKD 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 63: Cu-C24Dkd

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 17.2. CU-C24DKD 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 64: Replacement Parts List (Outdoor Unit)

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 18 Replacement Parts List (Outdoor Unit) 18.1. CU-C18DKD CU-C24DKD REF. NO. PART NAME & DESCRIPTION QTY. CU-C18DKD CU-C24DKD REMARKS CHASSY ASS’Y CWD50K2072 CWD50K2100 COMPRESSOR 2KS314D5AA02 2JS438D3GA02 ANTI - VIBRATION BUSHING CWH50049 CWH50055 ← NUT - COMPRESSOR MOUNT...
  • Page 65: Electronic Circuit Diagram

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 19 Electronic Circuit Diagram 19.1. Indoor Unit & Outdoor Unit CS-C18DKD CU-C18DKD CS-C24DKD CU-C24DKD SCHEMATIC DIAGRAM 1/4 ELECTRONIC CONTROL UNIT SUPERSONIC COMPLETE CN-SONIC BZ01 5.1k DISPLAY COMPLETE IC101 R101 C101 CN-DISP 6.3V CN-DISP D101 TIMER (ORG)
  • Page 66 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD SCHEMATIC DIAGRAM 2/4 10Ω 0.01µ 5.1k 6.2k 6.2k P50/A8 RY-PWR DRIVE SIGNAL STEPPING TIMER SHORTEN P51/A9 MOTOR DRIVE P03/NTP3 AUTO OPERATION SIGNAL P52/A10 TEST RUN P02/NTP2 REMOTE CONTROL BUZZER SOUND P53/A11 P01/NTP1 DISPLAY P54/A12 POWER CLOCK INPUT...
  • Page 67 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD SCHEMATIC DIAGRAM 3/4 IC08 IC09 REGULATOR REGULATOR DB02 3300µ 410µ 100µ 0.01µ 0.01µ DB03 100k 0.22µ 0.22µ 0.1µ 100k 450V 20kΩ PC03 100Ω 3.9k RY-PWR TH01 TH02 1/4W 1/4W 1/4W 1/4W 0.1µ FUSE 330k T 3.15A L 250V...
  • Page 68 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD SCHEMATIC DIAGRAM 4/4 C18DK COMPRESSOR MOTOR CAPACITOR CAPACITOR BR OR Y TO INDOOR POWER SUPPLY TEMPERATURE FUSE C24DK TO OUTDOOR COMPRESSOR MOTOR CAPACITOR CAPACITOR TO INDOOR HIGH VOLTAGE IONIZER R101 T1 D101 R102 D102 EH-4P C101 -4.2kV...
  • Page 69 CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 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 70: Remote Control

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 19.2. Remote Control...
  • Page 71: Print Pattern Indoor Unit Printed Circuit Board

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 19.3. Print Pattern Indoor Unit Printed Circuit Board TOP VIEW BOTTOM VIEW...
  • Page 72: Print Pattern Indicator & Receiver Printed Circuit Board

    CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD 19.4. Print Pattern Indicator & Receiver Printed Circuit Board TOP VIEW BOTTOM VIEW [PHAAM] Printed in Malaysia...

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