Panasonic CS-C18HKD Service Manual
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1 Safety Precautions----------------------------------------------- 2
2 Specifications ----------------------------------------------------- 4
2.1. CS-C18HKD CU-C18HKD ----------------------------- 4
2.2. CS-C24HKD CU-C24HKD ----------------------------- 6
3 Features ------------------------------------------------------------- 8
4.1. Indoor Unit--------------------------------------------------- 9
4.2. Outdoor Unit ------------------------------------------------ 9
4.3. Remote Control -------------------------------------------- 9
Indoor Unit Outdoor Unit
CS-C18HKD CU-C18HKD
CS-C24HKD CU-C24HKD
PAGE
5 Dimensions ------------------------------------------------------- 10
5.1. Indoor Unit & Remote Control ------------------------ 10
5.2. Outdoor Unit----------------------------------------------- 11
6 Refrigeration Cycle Diagram -------------------------------- 12
7 Block Diagram --------------------------------------------------- 13
8 Wiring Connection Diagram--------------------------------- 14
8.1. CS-C18HKD CU-C18HKD ---------------------------- 14
8.2. CS-C24HKD CU-C24HKD ---------------------------- 15
9 Electronic Circuit Diagram----------------------------------- 16
© 2007 Panasonic HA Air-Conditioning (M) Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
Order No. MAC0710040C8
Air Conditioner
PAGE

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Summary of Contents for Panasonic CS-C18HKD

  • Page 1: Table Of Contents

    4.2. Outdoor Unit ------------------------------------------------ 9 8.2. CS-C24HKD CU-C24HKD ---------------------------- 15 4.3. Remote Control -------------------------------------------- 9 9 Electronic Circuit Diagram----------------------------------- 16 © 2007 Panasonic HA Air-Conditioning (M) Sdn. Bhd. (11969-T). All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 2: Safety Precautions

    10 Printed Circuit Board ------------------------------------------ 17 13.1. Restart Control (Time Delay Safety Control) ----- 42 10.1. Indoor Unit (Main Printed Circuit Board) ----------- 17 13.2. 7 Minutes Time Save Control------------------------- 42 10.2. Indoor Unit (Power Printed Circuit Board) --------- 19 13.3.
  • Page 3 4. Install at a strong and firm location which is able to withstand the set's weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury. 5. For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet must be used.
  • Page 4: Specifications

    2 Specifications 2.1. CS-C18HKD CU-C18HKD Item Unit Indoor unit Outdoor unit Performance Test Condition NEW JIS 5.30 - 5.30 Capacity BTU/h 18100 - 18100 *kJ/h — 3.08 - 3.01 BTU/hW 10.52 - 10.28 dB (A) High: 42 Low: 37 High: 53 / 54...
  • Page 5 Item Unit Power Source (Phase, Voltage, Cycle) ø Single Single Input power 1.72k 1.76k Starting Current Running Current Cooling Maximum Current Cooling 12.2 12.2 Power Factor Cooling Power factor means total figure of compressor, indoor fan motor and outdoor fan motor. Number of core 3 (1.5mm) Power Cord...
  • Page 6: Cs-C24Hkd Cu-C24Hkd

    2.2. CS-C24HKD CU-C24HKD Item Unit Indoor unit Outdoor unit Performance Test Condition NEW JIS 7.03 - 7.03 Capacity BTU/h 24000 - 24000 *kJ/h — 2.99 - 2.92 BTU/hW 10.21 - 9.96 dB (A) High: 46 Low: 40 High: 53 / 54 Noise Level Power level dB —...
  • Page 7 Item Unit Power Source (Phase, Voltage, Cycle) ø Single Single Input power 2.35 2.41 Starting Current Running Current Cooling 11.5 11.6 Maximum Current Cooling 15.1 15.1 Power Factor Cooling Power factor means total figure of compressor, indoor fan motor and outdoor fan motor. Number of core 3 (2.5mm) Power Cord...
  • Page 8: Features

    3 Features • e-ion Air Purifying System with Patrol Sensor - Active e-ions are released to catch dust particles and bring them back the large positively charged filter - Patrol Sensor color changes to indicate the dirt level in the air •...
  • Page 9: Location Of Controls And Components

    4 Location of Controls and Components 4.1. Indoor Unit 4.2. Outdoor Unit 4.3. Remote Control...
  • Page 10: Dimensions

    5 Dimensions 5.1. Indoor Unit & Remote Control 5.1.1. CS-C18HKD CS-C24HKD...
  • Page 11: Outdoor Unit

    5.2. Outdoor Unit 5.2.1. CU-C18HKD 5.2.2. CU-C24HKD...
  • Page 12: Refrigeration Cycle Diagram

    6 Refrigeration Cycle Diagram...
  • Page 13: Block Diagram

    7 Block Diagram...
  • Page 14: Wiring Connection Diagram

    8 Wiring Connection Diagram 8.1. CS-C18HKD CU-C18HKD Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-C18HKD MODEL CU-C18HKD CONNECTION CWA951116J CONNECTION 2KS314D5FA04 BLUE-RED C - R 1.633 YELLOW-RED C - S 3.67 Note: Resistance at 20 C of ambient temperature.
  • Page 15: Cs-C24Hkd Cu-C24Hkd

    8.2. CS-C24HKD CU-C24HKD Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-C24HKD MODEL CU-C24HKD CONNECTION CWA951352J CONNECTION 2JS438D3GA02 BLUE-YELLOW 99.6 C - R 0.830 YELLOW-RED 126.8 C - S 2.257 YELLOW-ORANGE 158.7 Note: Resistance at 20 C of ambient temperature. Note: Resistance at 20 C of ambient temperature.
  • Page 16: Electronic Circuit Diagram

    9 Electronic Circuit Diagram...
  • Page 17: Printed Circuit Board

    10 Printed Circuit Board 10.1. Indoor Unit (Main Printed Circuit Board) TOP VIEW...
  • Page 18 BOTTOM VIEW...
  • Page 19: Indoor Unit (Power Printed Circuit Board)

    10.2. Indoor Unit (Power Printed Circuit Board)
  • Page 20: Indicator Panel

    10.3. Indicator panel TOP VIEW BOTTOM VIEW...
  • Page 21: Installation Instruction

    11 Installation Instruction 11.1. Select The Best Location Indoor/Outdoor Unit 11.1.3. Installation Diagram 11.1.1. 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 22: Indoor Unit

    11.2. Indoor Unit 11.2.1. How to Fix Installation Plate 11.2.2. To Drill a Hole in the Wall and Install The mounting wall is strong and solid enough to prevent it from a Sleeve of Piping the vibration. 1. Insert the piping sleeve to the hole. 2.
  • Page 23 3. For the embedded piping (This can be used for left rear piping and left bottom piping also.)
  • Page 24 11.2.4. 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 25: Outdoor Unit

    11.3. Outdoor Unit 11.3.1. 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 (ø10 mm). 2. When installing at roof, please consider strong wind and earthquake.
  • Page 26: Evacuation Of The Equipment

    11.3.3. 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 side of a charging set and the service port of the 3-way valve. •...
  • Page 27: Connect The Cable To The Outdoor Unit

    11.3.4. Connect the Cable to the Outdoor Unit 1. Remove the control board cover from the unit by loosening the screw. 2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 x 2.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.
  • Page 28: Operation Control

    12 Operation Control 12.1. 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. • The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 16 C to 30 C.
  • Page 29: Soft Dry Operation

    12.2. 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 30: Automatic Operation

    • The operation mode judging temperature and standard setting temperature can be increased by 2 C permanently, by open the circuit of JX03 at indoor electronic controller. 12.4. Indoor Fan Speed Control • Indoor Fan Speed can be set using remote control. 12.4.1. Fan Speed Rotation Chart COOL/DRY CS-C18HKD CS-C24HKD S Hi 1460 1590 1400...
  • Page 31 12.4.2. Automatic Fan Speed Control • When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the table. - Fan speed rotates in the range of Hi, Me and Lo-. - Deodorizing Control will be activated. •...
  • Page 32: Outdoor Fan Speed Control

    12.4.3. Manual Fan Speed Control • Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control. • There are 3 types of fan speed settings: Lo, Me, Hi. 12.5. Outdoor Fan Speed Control •...
  • Page 33: Horizontal Airflow Direction Control

    12.7. Horizontal Airflow Direction Control 12.7.1. Auto Control • When the horizontal airflow direction is set to Auto using the remote control, the vanes swings left and right as shown in the diagram. • When stopped with remote control, the discharge vane is reset, and stop at the reset position. •...
  • Page 34: Quiet Operation

    12.9. Quiet Operation (For Cooling Operation or cooling region of Soft Dry Operation) • To provide quiet cooling operation condition. • Once the Quiet Mode is set at the remote control, the Quiet Mode LED illuminated. The sound level will reduce around 2 dB (A) for Lo fan speed or 3 dB(A) for Hi/Me fan speed against the present operation sound level.
  • Page 35: Timer Control

    12.10. Timer Control 12.10.1. ON Timer • When the ON Timer is set by using the remote control, the unit will start to operate slightly before the set time, so that the room will reach nearly to the set temperature by the set time. •...
  • Page 36: Patrol Operation

    12.13. Patrol Operation • To monitor air dirtiness level by using Patrol sensor and to maintain air freshness by activates e-ion operation. • Patrol operation start condition - When the unit operation is started with “OFF/ON” button. - When the unit stops, “Patrol” button is pressed, Patrol individual operation will start. - During cooling only operation, “Patrol”...
  • Page 37 • Patrol Sensor Control - First 2 minutes from Patrol function activates is stabilization time, during stabilization time, no air dirtiness level is monitored. The Air Dirtiness level is set to Clean, Patrol LED turns blue color. - After that, Patrol sensor starts to record the resistance value at fixed interval. Higher resistance value indicates cleaner air. - The air dirtiness level is monitored by comparing the current resistance value with maximum resistance value from time to time to get the Air Dirtiness Value.
  • Page 38 • Indicator - When Patrol operation starts, Patrol LED is ON with 3 different colors: Patrol LED Air Quality Blue Clean Orange Moderate Dirty - Then e-ion operation starts based on dirtiness level, both Patrol LED and e-ion LED are ON •...
  • Page 39: E-Ion Operation

    12.14. e-ion Operation • This operation provides clean air by producing negative ions to attract dust captured at the positively charged active e-ion filters. • e-ion operation start condition - During unit running at any operation mode, if “e-ion” button is pressed, combination operation (operation mode + e-ion operation) starts.
  • Page 40 • Indicator - When e-ion operation starts, e-ion indicator ON. • Remote Control Receiving Sound - Normal Operation e-ion Operation : Beep - e-ion Operation Normal Operation : Beep - Stop e-ion individual Operation : Beep - e-ion individual Operation Stop : Long Beep •...
  • Page 41 3. Active e-ion Air Purifying system breakdown error: • Judgment Method - When hi-feedback voltage (at microcontroller) supplied to filter during e-ion stop, e-ion AIR PURIFYING SYSTEM breakdown error shows immediately. - It is due to indoor PCB or filter’s high voltage power supply damage. - Operations except e-ion continue.
  • Page 42: Operation Control

    13 Operation Control 13.1. Restart Control (Time Delay Safety Control) • When the thermo-off temperature (temperature which compressor stops to operate) is reached during:- - Cooling operation - the compressor stops for 3 minutes (minimum) before resume operation. - Soft Dry operation - the compressor stops for 6 minutes (minimum) before resume operation. •...
  • Page 43: Compressor Reverse Rotation Protection Control

    13.6. 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 44: Servicing Mode

    14 Servicing Mode 14.1. Auto OFF/ON Button 1. AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be use to operate air conditioner with limited function if remote control is misplaced or malfunction. 2.
  • Page 45: Remote Control Button

    14.3. Remote Control Button 14.3.1. SET BUTTON • To check current remote control transmission code. - Press for more than 10 seconds. • To change the air quality sensor sensitivity: - Press and release with pointer. - Press the Timer Decrement button to select sensitivity: 1.
  • Page 46: Troubleshooting Guide

    15 Troubleshooting Guide 15.1. 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. The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table to the right.
  • Page 47: Diagnosis Methods Of A Malfunction Of A Compressor

    15.1.1. 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 Strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression...
  • Page 48: Disassembly And Assembly Instructions

    16 Disassembly and Assembly Instructions WARNING • Cautions! When handling electronic controller, be careful of electrostatic discharge. • Be sure to return the wiring to its original position. • There are many high voltage components within the heat sink cover so never touch the interior during operation. Wait at least two minutes after power has been turned off.
  • Page 53: Technical Data

    17 Technical Data 17.1. Thermostat Characteristics Cooling Soft Dry...
  • Page 54: Operation Characteristics

    17.2. Operation Characteristics 17.2.1. CS-C18HKD CU-C18HKD...
  • Page 56 17.2.2. CS-C24HKD CU-C24HKD...
  • Page 58: Exploded View And Replacement Parts List

    18 Exploded View and Replacement Parts List 18.1. Indoor Unit 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 59 REF. NO. PART NAME & DESCRIPTION QTY. CS-C18HKD CS-C24HKD CHASSY COMPLETE CWD50C1520 FAN MOTOR, DC 30W 3PH ARW61E8P30AC CROSS FLOW FAN COMPLETE CWH02C1010 SCREW - CROSS FLOW FAN CWH551146 BEARING ASS’Y CWH64K007 EVAPORATOR CO. CWB30C2151 CWB30C2149 FLARE NUT (1/4”) CWT251026 FLARE NUT (1/2”)(5/8”)
  • Page 60: Outdoor Unitcu-C18Hkd

    18.2. Outdoor Unit CU-C18HKD 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: Outdoor Unitcu-C24Hkd

    18.3. Outdoor Unit CU-C24HKD 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 62 REF. NO. PART NAME & DESCRIPTION QTY. CU-C18HKD CU-C24HKD CHASSY ASS’Y CWD50K2072 CWD50K2100 COMPRESSOR 2KS314D5FA04 2JS438D3GA02 ANTI - VIBRATION BUSHING CWH50049 CWH50055 NUT - COMPRESSOR MOUNT CWH561049 PACKING - COM.MOUNT CWB81043 CONDENSER CWB32C1954 CWB32C2215 SOUND PROOF BOARD CWH151023 CWH151051 FAN MOTOR BRACKET CWD541030 CWD541065 SCREW - FAN MOTOR BRACKET...

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