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Panasonic CS-E18HKEW Service Manual

Panasonic air conditioner indoor/outdoor unit
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Please file and use this manual together with the Service Manual for Model No. CU-3E18EBE, Order No.
RAC0602011C2, Model No. CU-3E23CBPG, CU-4E27CBPG, Order No. RAC0209005C2.

TABLE OF CONTENTS

1 Safety Precautions----------------------------------------------- 3
2 Specifications ----------------------------------------------------- 5
2.1. CS-E18HKEW CU-E18HKE --------------------------- 5
2.2. Outdoor Unit: CU-3E18EBE ---------------------------- 7
3 Features ------------------------------------------------------------14
4.1. Indoor Unit--------------------------------------------------16
4.2. Outdoor Unit -----------------------------------------------16
4.3. Remote Control -------------------------------------------16
5 Dimensions--------------------------------------------------------17
5.1. Indoor Unit & Remote Control -------------------------17
Indoor Unit
CS-E18HKEW CU-E18HKE
PAGE
5.2. Outdoor Unit----------------------------------------------- 18
6 Refrigeration Cycle Diagram -------------------------------- 19
7 Block Diagram --------------------------------------------------- 20
7.1. CS-E18HKEW CU-E18HKE-------------------------- 20
8 Wiring Connection Diagram--------------------------------- 21
8.1. Indoor Unit ------------------------------------------------- 21
8.2. Outdoor Unit----------------------------------------------- 22
9 Electronic Circuit Diagram----------------------------------- 23
9.1. Indoor Unit ------------------------------------------------- 23
9.2. Outdoor Unit----------------------------------------------- 24
10 Printed Circuit Board ------------------------------------------ 25
10.1. Indoor Unit ------------------------------------------------- 25
© 2007 Panasonic HA Air-Conditioning (M) Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
Order No. MAC0712084C2
Air Conditioner
Outdoor Unit
PAGE

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  Summary of Contents for Panasonic CS-E18HKEW

  • Page 1: Table Of Contents

    5 Dimensions--------------------------------------------------------17 10 Printed Circuit Board ------------------------------------------ 25 5.1. Indoor Unit & Remote Control -------------------------17 10.1. Indoor Unit ------------------------------------------------- 25 © 2007 Panasonic HA Air-Conditioning (M) Sdn. Bhd. (11969-T). All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 2 16.1. Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures ------ 57 17 Technical Data---------------------------------------------------- 62 17.1. Operation Characteristics ------------------------------ 62 17.2. Sensible Capacity Chart-------------------------------- 66 18 Exploded View and Replacement Parts List ----------- 67 18.1. CS-E18HKEW -------------------------------------------- 67 18.2. CU-E18HKE ----------------------------------------------- 69...
  • Page 3: Safety Precautions

    1 Safety Precautions • Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. • Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. •...
  • Page 4 1. 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. 2. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.
  • Page 5: Specifications

    2 Specifications 2.1. CS-E18HKEW CU-E18HKE ITEM UNIT INDOOR UNIT OUTDOOR UNIT Performance Test Condition EUROVENT 5.30 (0.90 ~ 6.00) Capacity BTU/h 18100 (3070 ~ 20500) kCal/h 4560 (770 ~ 5160) 3.21 (4.19 ~ 2.93) BTU/hW 11.0 (14.3 ~ 10.0) dB (A)
  • Page 6 ITEM UNIT INDOOR UNIT OUTDOOR UNIT Type Cross-Flow Fan Propeller Fan Material ASHT-18 Motor Type Transistor (8-pole) Transistor (8-pole) Input Power 62.1 Output Power Q-Lo (Cool/Heat) 1080 / 1170 — Lo (Cool/Heat) 1160 / 1240 — Fan Speed Me (Cool/Heat) 1295 / 1410 —...
  • Page 7: Outdoor Unit: Cu-3E18Ebe

    2.2. Outdoor Unit: CU-3E18EBE Outdoor unit Indoor unit combination Operation Capacity (kW) Power Input (kW) Current (A) mode Operation Class (kW) Rating mini - max Rating mini - max CU-3E18EBE One-room Cooling 2.20 1.8 - 2.9 0.50 0.34 - 0.81 Operation Heating 3.20...
  • Page 8 Outdoor unit Indoor unit combination Operation Capacity (kW) Power Input (kW) Current (A) mode Operation Class (kW) Rating mini - max Rating mini - max CU-3E18EBE Three-room 2.8 + 2.8 + Cooling 5.20 1.9 - 7.2 1.23 0.36 - 2.18 Operation Heating 6.80...
  • Page 9: Outdoor Unit: Cu-3E23Cbpg Cu-4E27Cbpg

    2.3. Outdoor Unit: CU-3E23CBPG CU-4E27CBPG Outdoor unit Indoor unit combination Operation Capacity (kW) Power Input (kW) Current (A) mode Operation Class (kW) Rating mini - max Rating mini - max CU-3E23CBPG One-room Cooling 2.20 1.9 - 2.7 0.45 0.38 - 0.62 2.25 Operation Heating...
  • Page 10 Outdoor unit Indoor unit combination Operation Capacity (kW) Power Input (kW) Current (A) mode Operation Class (kW) Rating mini - max Rating mini - max CU-3E23CBPG Three-room 2.2 + 2.8 + Cooling 6.80 2.8 - 8.3 1.95 0.49 - 2.79 8.50 Operation Heating...
  • Page 11 Outdoor unit Indoor unit combination Operation Capacity (kW) Power Input (kW) Current (A) mode Operation Class (kW) Rating mini - max Rating mini - max CU-4E27CBPG Three-room 2.2 + 2.2 + Cooling 6.60 2.2 - 7.8 1.66 0.41 - 2.49 7.40 Operation Heating...
  • Page 12 Outdoor unit Indoor unit combination Operation Capacity (kW) Power Input (kW) Current (A) mode Operation Class (kW) Rating mini - max Rating mini - max CU-4E27CBPG Three-room 3.2 + 4.0 + Cooling 8.00 2.9 - 8.4 2.35 0.49 - 2.82 10.30 Operation Heating...
  • Page 13 Outdoor unit Indoor unit combination Operation Capacity (kW) Power Input (kW) Current (A) mode Operation Class (kW) Rating mini - max Rating mini - max CU-4E27CBPG Four-room 2.2 + 3.2 + Cooling 8.00 2.9 - 9.1 2.09 0.52 - 2.86 9.20 Operation 4.0 + 4.0...
  • Page 14: Features

    - A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E27CBPG. Outdoor Unit CU-2E15GBE CU-2E18CBPG CU-3E18EBE CU-3E23CBPG CU-4E27CBPG 2.2 kW CS-E7HKEW CS-E7HKDW 2.8 kW CS-E9HKEW CS-E9HKDW 3.2 kW CS-E12HKEW CS-E12HKDW 4.0 kW CS-E15HKEW — — — — CS-E15HKDW 5.0 kW CS-E18HKEW — — — — CS-E18HKDW...
  • Page 15 Capacity range of connectable indoor From 4.4kW to 5.6kW From 4.4kW to 6.4kW From 5.0kW to 9.0kW From 5.0kW to 10kW From 5.0kW to 13.6kW units 1 room maximum pipe length (m) Allowable elevation (m) Total allowable pipe length (m) Total pipe length for maximum...
  • Page 16: Location Of Controls And Components

    4 Location of Controls and Components 4.1. Indoor Unit 4.2. Outdoor Unit 4.3. Remote Control...
  • Page 17: Dimensions

    5 Dimensions 5.1. Indoor Unit & Remote Control...
  • Page 18: Outdoor Unit

    5.2. Outdoor Unit 5.2.1. CU-E18HKE...
  • Page 19: Refrigeration Cycle Diagram

    6 Refrigeration Cycle Diagram Piping size Rated Min. Max. Additional Length Elevation Piping Piping Refrigerant Model Liquid Length Length (g/m) E18HKE 1/2” 1/4” * If piping length is over common length, additional refrigerant should be added as shown in the table.
  • Page 20: Block Diagram

    7 Block Diagram 7.1. CS-E18HKEW CU-E18HKE...
  • Page 21: Wiring Connection Diagram

    8 Wiring Connection Diagram 8.1. Indoor Unit 8.1.1. CS-E18HKEW...
  • Page 22: Outdoor Unit

    8.2. Outdoor Unit 8.2.1. CU-E18HKE...
  • Page 23: Electronic Circuit Diagram

    9 Electronic Circuit Diagram 9.1. Indoor Unit...
  • Page 24: Outdoor Unit

    9.2. Outdoor Unit 9.2.1. CU-E18HKE...
  • Page 25: Printed Circuit Board

    10 Printed Circuit Board 10.1. Indoor Unit 10.1.1. Main Printed Circuit Board...
  • Page 26 10.1.2. Power Printed Circuit Board 10.1.3. Indicator Printed Circuit Board...
  • Page 27: Outdoor Unit

    10.2. Outdoor Unit 10.2.1. Main Printed Circuit Board 10.2.1.1. CU-E18HKE...
  • Page 28 10.2.2. Noise Filter Printed Circuit Board...
  • Page 29: Installation Instruction

    11 Installation Instruction 11.1. Select The Best Location 11.2. Indoor/Outdoor Unit Installation INDOOR UNIT Diagram • There should not be any heat source or steam near the unit. • There should not be any obstacles blocking the air circulation. • A place where air circulation in the room is good. •...
  • Page 30: Indoor Unit

    11.3. 11.3.2. TO DRILL A HOLE IN THE WALL Indoor Unit INSTALL SLEEVE 11.3.1. HOW TO FIX INSTALLATION PLATE PIPING The mounting wall is strong and solid enough to prevent it from 1. Insert the piping sleeve to the hole. the vibration.
  • Page 31 3. For the embedded piping (This can be used for left rear piping and left bottom piping also.)
  • Page 32 11.3.4. 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 4 1.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.
  • Page 33: Outdoor Unit

    11.4. Outdoor Unit 11.4.1. 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. Please fasten the installation stand firmly with bolt or nails.
  • Page 34: Evacuation Of The Equipment

    11.4.3. 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 35: Connect The Cable To The Outdoor Unit

    11.4.4. CONNECT THE CABLE TO THE OUTDOOR UNIT (FOR DETAIL REFER TO WIRING DIAGRAM AT 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 4 1.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.
  • Page 36: Operation And Control

    12 Operation and 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 37: Automatic 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, indoor intake air temperature and outdoor air temperature. • During operation mode judgment, indoor fan motor (with speed of Lo-) and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature.
  • Page 38: Airflow Direction

    [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 <...
  • Page 39: Quiet Operation (Cooling Mode/Cooling Area Of Soft Dry Mode)

    1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below.
  • Page 40: Powerful Mode Operation

    1. When one of the following conditions is satisfied, quiet operation stops: a. Powerful button is pressed. b. Stop by OFF/ON switch. c. Timer “off” activates. d. Quiet button is pressed again. 2. When quiet operation is stopped, operation is shifted to normal operation with previous setting. 3.
  • Page 41: On Timer Control

    12.5. ON Timer Control ON timer can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time. 60 minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time.
  • Page 42: Patrol Operation

    12.9. Patrol Operation A. Purpose To monitor air dirtiness level by using gas sensor and activates e-ion operation whenever air is dirty. B. Control Condition a. Patrol operation start condition • When the unit operation is started with “OFF/ON” button. •...
  • Page 43 C. Control Content a. Gas 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 level 2. • After that, gas sensor starts to record the resistance value at fixed interval. Higher resistance value indicates cleaner air. •...
  • Page 44: E-Ion Operation

    f. Remote Control Receiving Sound • Normal Operation Patrol Mode Beep • Patrol Mode Stop Long Beep • Patrol Mode Normal Operation Beep • Stop Patrol Beep g. Timer Control • When ON timer activates when unit stops, previous operation resumes without Patrol operation. •...
  • Page 45 C. Control Content a. Indoor fan control • During any operation mode combines with e-ion operation, fan speed follows respective operation mode. • During e-ion individual operation - only Auto Fan Speed and no Powerful operation is allowed. Even if Fan Speed button is pressed, no signal is sent to air conditioner, and no change on LCD display.
  • Page 46 Error Reset Method • Press “OFF/ON” button to OFF the operation. • Press AUTO OFF/ON button at indoor unit to OFF the operation. • OFF Timer activates. • Press “e-ion” button during e-ion individual mode. • Power supply reset. iii. e-ion breakdown Judgement Method •...
  • Page 47: Protection Control

    13 Protection Control 13.1. Protection Control For All Operations 13.1.1. Time Delay Safety Control 1. The compressor will not start for three minutes after stop of operation. 2. This control is not applicable if the power supply is cut off and on again or after 4-way valve deices condition. 13.1.2.
  • Page 48: Protection Control For Cooling & Soft Dry Operation

    13.1.5. Compressor Overheating Prevention Control Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below figure. If compressor discharge temperature exceeds 112 C, compressor will be stop, occurs 4 times per 20 minutes, timer LED will be blinking (“F97”...
  • Page 49: Cooling Overload Control

    13.2.2. Cooling Overload Control i. Pipe temperature limitation/restriction • Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency) • The compressor stop if outdoor pipe temperature exceeds 63 C. • If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection) 13.2.3.
  • Page 50: Protection Control For Heating Operation

    13.3. Protection Control For Heating Operation 13.3.1. Intake Air Temperature Control Compressor will operate at maximum frequency if below conditions occur: 1. When the indoor intake air temperature is 30 C or above. 13.3.2. Outdoor Air Temperature Control The maximum current value is regulated when the outdoor air temperature rises above 14 C in order to avoid compressor overloading.
  • Page 51: 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 used to operate air conditioner with limited function if remote control is misplaced or malfunction. 2.
  • Page 52: Remote Control Button

    Remote Control Printed Circuit Board Jumper A (J-A) Jumper B (J-B) Remote Control No. Short Open A (Default) Open Open Short Short Open Short 14.3. Remote Control Button 14.3.1. SET BUTTON • To check current remote control transmission code - Press for more than 10 seconds. •...
  • Page 53: 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 on the right.
  • Page 54: Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current

    15.2. 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 Electric current during operation during operation Insufficient refrigerant (gas leakage) Clogged capillary tube or Strainer...
  • Page 55: Breakdown Self Diagnosis Function

    15.3. Breakdown Self Diagnosis Function 15.3.1. Self Diagnosis Function (Three Digits Alphanumeric Code) • Once abnormality has occurred during operation, the unit 7. The breakdown diagnosis mode will be canceled will stop its operation, and Timer LEDs blink. unless pressing the CHECK button continuously for 5 •...
  • Page 56: Error Codes Table

    15.4. Error Codes Table Diagnosis Abnormality Emergency Abnormality / Protection control Primary location to verify display Judgement operation No abnormality detected — Normal operation — Indoor / outdoor abnormal > 1 min after starting Indoor fan operation • Internal / external cable connections communication operation only...
  • Page 57: Disassembly And Assembly Instructions

    16 Disassembly and Assembly Instructions WARNING High Voltage are 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.
  • Page 59 16.1.3. To remove discharge grille 16.1.4. To remove control board...
  • Page 60 16.1.5. To remove cross flow fan and indoor fan motor...
  • Page 62: Technical Data

    17 Technical Data 17.1. Operation Characteristics 17.1.1. CS-E18HKEW CU-E18HKE...
  • Page 66: Sensible Capacity Chart

    17.2. Sensible Capacity Chart CS-E18HKEW CU-E18HKE Outdoor Temp. ( C) Indoor wet bulb temp. 17.0 C 5.26 3.99 1.51 4.91 3.82 1.63 4.57 3.67 1.74 4.16 3.49 1.88 19.0 C 5.30 1.65 19.5 C 5.77 4.17 1.54 5.40 4.01 1.66 5.02...
  • Page 67: Exploded View And Replacement Parts List

    18 Exploded View and Replacement Parts List 18.1. CS-E18HKEW 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 68 <Model: CS-E18HKEW> REF NO. PART NAME & DESCRIPTION QTY. CS-E18HKEW REMARKS CHASSY COMPLETE CWD50C1520 FAN MOTOR ARW61G8P30AC CROSS FLOW FAN COMPLETE CWH02C1010 SCREW - CROSS FLOW FAN CWH551146 BEARING ASS’Y CWH64K007 EVAPORATOR CWB30C1533 FLARE NUT (1/4”) CWT251030 FLARE NU (1/2”) (5/8”)
  • Page 69: Cu-E18Hke

    18.2. CU-E18HKE 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 70 <Model: CU-E18HKE> REF. NO. DESCRIPTION & NAME QTY. CU-E18HKE REMARKS CHASSY ASS’Y CWD50K2085 ANTI-VIBRATION BUSHING CWH50077 COMPRESSOR 5CS130XAD04 NUT-COMPRESSOR MOUNT CWH56000J SOUND PROOF MATERIAL CWG302302 FAN MOTOR BRACKET CWD541054 FAN MOTOR CWA981166J SCREW - FAN MOTOR BRACKET CWH551060J SCREW - FAN MOTOR MOUNT CWH551106J PROPELLER FAN ASSY CWH03K1016...