Panasonic CS-E18CKE Service Manual
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Panasonic CS-E18CKE Service Manual

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CONTENTS
CS-E18CKE CU-E18CKE
CS-E21CKE CU-E21CKE
Page
2
3
6
10
12
13
14
15
15
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44
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57
© 2003 Matsushita Industrial Corp. Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
Order No. MAC0308013C2

Room Air Conditioner

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59
63
63
66
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Summary of Contents for Panasonic CS-E18CKE

  • Page 1: Table Of Contents

    Order No. MAC0308013C2 Room Air Conditioner CS-E18CKE CU-E18CKE CS-E21CKE CU-E21CKE CONTENTS Page Page 1 Features 10.4. INSTALLATION, TRANSFERRING, SERVICING 2 Functions 11 Installation Instructions 3 Product Specifications 11.1. Safety Precautions 4 Dimensions 11.2. INDOOR UNIT 5 Refrigeration Cycle Diagram 11.3. OUTDOOR UNIT...

  • Page 2: Features

    15 Replacement Parts List 18.2. PRINT PATTERNINDOOR UNIT PRINTED CIRCUIT 16 Exploded View BOARD 17 Replacement Parts List 18.3. PRINT PATTERNOUTDOOR UNIT PRINTED CIRCUIT 18 Electronic Circuit Diagram BOARD VIEW 18.1. REMOTE CONTROL 1 Features • Product • Serviceability − Microcomputer-controlled −...

  • Page 3: Functions

    2 Functions Remote Control Illuminable buttons OFF/ON FAN SPEED Operation OFF / ON Indoor Fan Speed Selection • • Medium- MODE • Medium Operation Mode Selection • Medium+ • High • Automatic Operation • Automatic Fan Speed AUTO • Heating Operation HEAT •...

  • Page 4: Indoor Unit

    Indoor Unit Automatic Operation Switch Five Operation Modes • Press for < 5s to run Automatic Operation. • Automatic, Heating, Cooling, Soft Dry (Used when the remote control cannot be used.) and Fan Operation. • Press continuously for 5s and < 8s to run Forced Cooling Operation.
  • Page 5 Outdoor Unit Time Delay Safety Control Breakdown Self Diagnosis Function 30 seconds Forced Operation Low Pressure Control (Gas Leakeage Detection) Overload Protection Control Indoor Power Relay Control Total Running Current Control Compressor Overheating Anti-Dew Formation Control Prevention Control Anti Freezing Control IPM (Power Transistor) Overheating Protection Control Anti-Cold Draft Control...

  • Page 6: Product Specifications

    3 Product Specifications Unit CS-E18CKE CU-E18CKE Cooling Capacity 5.30 (0.90 - 6.00) kcal/h 4,560 (770 - 5,160) BTU/h 18,100 (3,070 - 20,500) Heating Capacity 6.60 (0.90 - 8.00) kcal/h 5,680 (770 - 6,880) BTU/h 22,500 (3,070 - 27,300) Moisture Removal Pint/h (6.1)
  • Page 7 Unit CS-E18CKE CU-E18CKE Pipe Size inch G (gas side) ; 1/2” G (gas side) ; 1/2” (Flare piping) inch L (liquid side) ; 1/4” L (liquid side) ; 1/4” Drain Inner diameter — Hose Length 0.65 — Power Cord Length 2.1 m...
  • Page 8 Unit CS-E21CKE CU-E21CKE Cooling Capacity 6.30 (0.90 - 7.10) kcal/h 5,420 (770 - 6,110) BTU/h 21,500 (3,070 - 24,200) Heating Capacity 7.20 (0.90 - 8.50) kcal/h 6,190 (770 - 7,310) BTU/h 24,600 (3,070 - 29,000) Moisture Removal Pint/h (7.4) Power Source Phase Single Cycle...
  • Page 9 Unit CS-E21CKE CU-E21CKE Drain Inner diameter — Hose Length 0.65 — Power Cord Length 2.1 m — Number of core-wire 3 core wires × 1.5 mm — Dimensions Height inch (mm) 10 - 13/16 (275) 29 - 17/32 (750) Width inch (mm) 39 - 9/32 (998) 34 - 7/16 (875)

  • Page 10: Dimensions

    4 Dimensions...

  • Page 12: Refrigeration Cycle Diagram

    5 Refrigeration Cycle Diagram...

  • Page 13: Block Diagram

    6 Block Diagram...

  • Page 14: Wiring Diagram

    7 Wiring Diagram...

  • Page 15: Operation Details

    8 Operation Details 8.1. 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 16 Table (b): Outdoor Air Temperature Shifting Mode: Outdoor Temperature, X (°C): Temperature Shift (°C) Manual Operation Auto Operation Cooling/Soft Dry 1.50 2.00 1.25 1.25 1.25 1.25 1.75 1.75 Heating -2.25 -1.50 -1.75 -1.00 -0.75 0.00 0.25 0.25 1.25 1.00 0.75 1.00 1.50 1.00...

  • Page 17: Compressor Operation Frequency

    8.1.2. Compressor Operation Frequency Intake Air Temperature - Internal Setting Temperature (°C) Freq. H Zone Cooling & Soft Dry Heating Cooling Soft Dry Heating Remark -2.0 -1.5 -1.0 -0.5 -0.5 -1.0 -1.5 -2.0 Fc, Fh -2.5 Fc, Fh -3.0 Fc, Fh -3.5 -4.0 Operating Frequency Calculation Formula:...
  • Page 18 8.1.4. Soft Dry Operation 8.1.4.1. Thermostat control • Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.5°C. • Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point.

  • Page 19: Indoor Fan Motor Operation

    Values of T1, T2, and T3 depend on remote control setting temperature, as shown in below table. After the adjustment of T1, T2 and T3 values, the operation mode for that particular environment and remote control setting is judged and performed, based on the above operation mode chart, every 30 minutes.
  • Page 20 B. Indoor Fan Control i. Indoor fan control operation outline 1. Cooling / Dry 2. Heating...
  • Page 21 ii. Auto Fan Speed 1. Cooling 2. Heating Note: a. UP: • If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21CK), 1480 rpm (E18CK). • If move from Maximum, the fan speed no change. •...
  • Page 22 iii. Max Capacity Condition a) During Cooling operation, if all to the following condition is fulfilled, the indoor fan speed is set to Shi. 1. Indoor intake temperature 24°C. 2. Operation frequency 72 Hz (E18CK), 95 Hz (E21CK) & above. 3.

  • Page 23: Outdoor Fan Motor Operation

    D. Deodorizing Control i. Control condition Control at cooling/dry operation and auto fan speed. No Deodorizing Control is performed during ON timer standby operation and during Anti-freezing control prevention. ii. Operation The odor status is arranged as below and it is shifted as follow. 1 →...

  • Page 24: Airflow Direction

    Basic Rotation Speed 8.1.9. Airflow Direction 1. There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes). 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 25 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 26 8.1.10. Quiet operation (Cooling Mode/Cooling area of Dry Mode) A. Purpose To provide quiet cooling operation compare to normal operation. B. Control condition a. Quiet operation start condition • When “quiet” button at remote control is pressed. Quiet LED illuminates. b.

  • Page 27: Quiet Operation (Heating)

    8.1.10.2. Quiet operation (Heating) A. Purpose To provide quiet heating operation compare to normal operation. B. Control condition a. Quiet operation start condition • When “quiet” button at remote control is pressed. Quiet LED illuminates. b. Quiet operation stop condition 1.

  • Page 28: Powerful Mode Operation

    8.1.11. Powerful Mode Operation When the powerful mode is selected, the internal setting temperature will shift to achieve the setting temperature quickly. (a) Cooling Operation (b) Soft Dry Operation (c) Heating Operation 8.1.12. Delay ON Timer Control Delay 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.

  • Page 29: Auto Restart Control

    8.1.14. Auto Restart Control 1. 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 30: Indoor Power Relay Control

    8.1.17. Indoor Power Relay Control Power relay will turn on during operation or in progress of stopping operation. Although operation stops, the power relay continues on for three minutes. However, during instantaneous power failure (< 0.5s), power relay will turn off. Then, it will turn on 2 minutes after power recover and the unit will operate as previous operation condition.

  • Page 31: Ionizer Operation Case Study

    3. Ionizer operation status is not memorised by micon. After OFF, when operation is “ON” again, air conditioner operates without ionizer operation. c. Timer during ionizer operation Refer to case study in next page for detail. 8.1.18.1. Ionizer Problem Detection Control i.

  • Page 32: Protection Control Features

    8.2. Protection Control Features 8.2.1. Protection Control For All Operations 8.2.1.1. 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. 8.2.1.2.
  • Page 33 8.2.1.4. IPM (Power transistor) Prevention Control A. Overheating Prevention Control 1. When the IPM temperature rises to 110°C, compressor operation will stop immediately. 2. Compressor operation restarts after three minutes the temperature decreases to 95°C. B. DC Peak Current Control 1.
  • Page 34 8.2.1.7. CT Disconnection Detection 1. Control Starting Condition a. Total Current is below 0.74 ~ 0.94 Amp. b. Operating Frequency is 72 Hz (E18CK), 95 Hz (E21CK) +1 and above. c. Continuously for 20s. 2. Control Contents a. Abnormal signal transmitted to indoor unit after 3 minutes outdoor power is supplied. (Indoor unit stop) 3.

  • Page 35: Outdoor Air Temperature Control

    8.2.2. Protection Control For Cooling & Soft Dry Operation 8.2.2.1. Outdoor Air Temperature Control The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. 8.2.2.2. Cooling Overload Control i. Pipe temperature limitation/restriction •...
  • Page 36 8.2.2.3. Anti-Freezing Control 1. When indoor heat exchanger temperature is lower than 2°C continuously for six minutes, compressor will stop operating. 2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 10°C. 3. At the same time, indoor fan speed increase +40 rpm compared to its normal operation. 4.
  • Page 37 8.2.3. Protection Control For Heating Operation 8.2.3.1. Anti Cold Draft Control Indoor fan speed varies in accordance to indoor heat exchanger temperature, based on type of air volume and direction, as shown below. 1. Manual Fan Speed 2. Auto Fan Speed...
  • Page 38 Note: a. UP: • If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21CK), 1480 rpm (E18CK). • If move from Maximum, the fan speed no change. • In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E21CK), 1480 rpm (E18CK). b.
  • Page 39 8.2.3.4. Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures. 8.2.3.5. Outdoor Temperature Control • Outdoor temperature is detected and the following control is perform. • Control operates after more than 1 minute the compressor has started.

  • Page 40: Deice Control

    8.2.3.6. Deice Control A. Deice operation (Normal Deice Operation) 1. Detection methods Outdoor heat exchanger temperature sensor, timer. 2. Deice operation time chart Notes a. During deice operation, the relationship between outdoor pipe temperature and time T1 is such operation will proceed to next stage.
  • Page 41 3. Explanation of operation 1) Before the deice is started, compressor frequency is set to the specified value for T0-timer. 2) After deice is started, the 4-way valve, OD Fan and ID fan are OFF. 3) After 4-way valve is OFF for 30 s, compressor frequency is set to the specified value. 4) Before deice is ended, if the outdoor heat exchanger temperature exceeds a°C, set compressor frequency and expansion valve to the specified values.
  • Page 42 3. Deice condition: OD air temp. t 0°C. OD heat exchanger temp. 0°C for 14 min. OD heat exchanger temp. -8°C for 10 min. 4. Auto clean deice time chart Similar to deice operation 2 except for frequency values. a. Detection methods Outdoor heat exchanger temp.
  • Page 43 Notes 1. During deice operation, the relationship between outdoor pipe temperature and time T1 is such proceed to next operation. 2. The deice will be performed only after 1 hour from when the operation has started. 3. When Comp. OFF by the sequence No. 1, 6, 7 compressor can restart back without 3 minutes waits (immediate restart). Outdoor heat exchanger pipe temperature 15°C 18°C...

  • Page 44: Operating Instructions

    9 Operating Instructions Ionizer DO NOT TOUCH...
  • Page 46 Select Set time Confirm Set time Confirm ON & OFF Set time Confirm Timer Timer Timer Current time OK? –> Setting: page 48...
  • Page 47 Soaps Neutral household detergents ( pH7) every 6 months see page 44 see page 48...
  • Page 48 refer page 47...
  • Page 50 NEVER install, remove or reinstall yourself Do NOT pull out the plug by the cable Do NOT insert finger or other objects into the unit! —> especially dangerous for children!
  • Page 51 47 / 48 47 / 48...

  • Page 52: Installation And Servicing Air Conditioner Using R410A

    10 Installation And Servicing Air Conditioner Using R410A 10.1. OUTLINE 10.1.1. 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 taken around the world to prevent this destruction.

  • Page 53: Tool For Installing / Servicing Refrigerant Piping

    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 54: R410A Tools

    10.2.2. R410A Tools 1. Cooper 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 flaring tool.
  • Page 55 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 56 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 done using the charging cylinder method, causing bubbles to form in the measurement scale glass and making it difficult to see the reading.

  • Page 57: Refrigerant Piping Work

    10.3. REFRIGERANT PIPING WORK 10.3.1. 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 used 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 58 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 9.52 0 - 0.5 1.0 - 1.5 1.5 - 2.0 12.70...

  • Page 59: Installation, Transferring, Servicing

    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 60: Transferring (Using New Refrigerant Piping)

    10.4.2. 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 61 5. Set the refrigerant cylinder onto the electronic scale, then correct the hose the cylinder and to the connection port for the electronic scale. (1)(2) Precaution: Be sure to set up the cylinder for liquid charging. If you use a cylinder equipped with a siphon tube, you can charge the liquid without having to turn the cylinder around 6.
  • Page 62 10.4.6. 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 (N2) flow.

  • Page 63: Installation Instructions

    11 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 NGm (1.8 kgfGm) 55 NGm (5.5 kgfGm) 65 NGm (6.5 kgfGm) 3.
  • Page 64 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. 3.
  • Page 65 Attached accessories Indoor/Outdoor Unit Installation Diagram Applicable piping kit CZ-4F5, 7, 10AN (E18CK, E21CK) 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 66: Indoor Unit

    11.2. INDOOR UNIT 11.2.1. SELECT THE BEST LOCATION 11.2.3. 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. 11.2.2. HOW TO FIX INSTALLATION 2.
  • Page 67 3. For the embedded piping (This can be used for left rear piping & left bottom piping also.)

  • Page 68: Connect The Cable To The Indoor Unit

    11.2.5. 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 4 × 2.5 mm (E18CK, E21CK) flexible cord, type designation 245 IEC 57 or heavier cord.

  • Page 69: Outdoor Unit

    AUTO SWITCH OPERATION The below operations will be performed by pressing the “AUTO” switch. 1. AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto Switch is pressed. 2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto Switch is pressed continuously for more than 5 sec. to below 8 sec. A “beep” sound will occur at the fifth sec., in order to identify the starting of Test Run operation 3.
  • Page 70 CUTTING AND FLARING THE PIPING 1. Please cut using pipe cutter and then remove the burrs. 2. 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.

  • Page 71: Connect The Cable To The Outdoor Unit

    11.3.5. 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 4 × 2.5 mm (E18CK, E21CK) flexible cord, type designation 245 IEC 57 or heavier cord.

  • Page 72: Servicing Information

    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 73 Troubleshooting Air Conditioner 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 74: Breakdown Self Diagnosis Function

    1. 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 75 Error Codes Table Diagnosis Abnormality / Protection control Abnormality Emergency Primary location to verify display Judgement operation • Internal / external cable connections Indoor / outdoor abnormal > 1 min after starting Indoor fan operation communication operation only • Indoor / Outdoor PCB •...

  • Page 76: Remote Control

    12.3. Remote Control • Remote Control Reset When the batteries are inserted for the first time, or the batteries are replaced, all the indications will blink and the remote control might not work. If this happen, remove the cover of the remote control and push the reset point once to clear the memory data.

  • Page 77: Indoor Electronic Controllers Removal Procedures

    12.4. Indoor Electronic Controllers Removal Procedures 1. The Electronic Controller, a Signal Receiver and an Indicator (Fig. 3) can be seen by the below steps: • Open the Intake Grille and remove the screw at the front of the Front Grille. (Fig. 1). •...

  • Page 78: Cross Flow Fan And Indoor Fan Motor Removal Procedures

    12.5. 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. a. Release the Earth Wire screw. (Fig. 5) b.
  • Page 79 6. Remove the Bearing. (Fig. 9) 7. Remove the screws at the left of the Evaporator. (Fig. 9) Fig. 9 8. Push up the Evaporator and pull out the Cross Flow Fan from shaft. By then, Fan Motor can be taken out. (Fig. 10). REMINDER - To reinstall the Fan Motor, put it back in place, adjust the position of the Fan Motor’s leadwire appropriately as shown in the Fig.

  • Page 80: Outdoor Electronic Controller Removal Procedure

    12.6. Outdoor Electronic Controller Removal Procedure 1. Remove the top panel and front panel • Be save 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 81: Technical Data

    13 Technical Data...
  • Page 83 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 3.86 1.77 4.56 3.67 1.91 22.0°C 6.29 4.33 1.57 5.88 4.16 1.69...

  • Page 84: Exploded View

    14 Exploded View 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 85: Replacement Parts List

    15 Replacement Parts List <Model: CS-E18CKE & CS-E21CKE> REF. NO. PART NAME & DESCRIPTION QTY. CS-E18CKE CS-E21CKE REMARKS ← CHASSY COMPLETE CWD50C1293 ← FAN MOTOR CWA981056 ← CROSS FLOW FAN COMPLETE CWH02C1010 ← SCREW - CROSS FLOW FAN CWH4580304 ←...

  • Page 86: Exploded View

    16 Exploded View 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 87: Replacement Parts List

    17 Replacement Parts List <Model: CU-E18CKR & CU-E21CKR> REF NO. DESCRIPTION & NAME QTY. CU-E18CKR CU-E21CKR REMARKS ← CHASSY ASSY CWD50K2085 ← ANTI-VIBRATION BUSHING CWH50077 ← COMPRESSOR 5CS130XAC03 ← NUT-COMPRESSOR MOUNT CWH56000 ← SOUND PROOF MATERIAL CWG302111 ← FAN MOTOR BRACKET CWD541054 ←...

  • Page 88: Electronic Circuit Diagram

    18 Electronic Circuit Diagram • CS-E18CKE CS-E21CKE SCHEMATIC DIAGRAM 1/3 TO OUTDOOR ELECTRONIC CONTROL UNIT CN-MAIN PH10 (WHT) TEMPERATURE FUSE (YLW/GRN) (YLW/GRN) 100µ 330Ω (BLK) 47µ 1000p (MB) (RED) R1 43Ω R2 43Ω (BRW) 1/2W 1/2W RY-PWR (BLK) CN-HA R17 1kΩ...
  • Page 89 SCHEMATIC DIAGRAM 2/3 RECEIVER R101 IC101 R14 510Ω CN-RCV 1kΩ C101 (MX-3) CN-RCV 22µF 10V (NHG) R12 1kΩ 1000p 20kΩ 20kΩ 20kΩ (MB) 20kΩ 1kΩ R8 5.1kΩ 100Ω 100Ω (2125) (2125) 0.1µ 0.022µ [KB] CN-STM1 (PH5) TD62003AF (ZH5) VERTICAL CN-STM2 (PH5) (ZH5) HORIZONTAL...
  • Page 90 SCHEMATIC DIAGRAM 3/3 ELECTRONIC CONTROL UNIT (CONVERTER UNIT) F001 CN001 C003 L001 Z001 C002 C005 DB004 C004 Z002 R056 TH002 TH001 D007 R030 R046 CN002 L002 R003 R028 PC005 Q002 R029 R113 PC001 R114 PC004 R002 Q001 R004 R116 ZD005 PC002 PC006 4.7k...
  • Page 91 • CU-E18CKE CU-E21CKE SCHEMATIC DIAGRAM 1/5 REACTOR GRY2 GRY1 DC-2 DC-1 LJP111 LJP105 BROWN R151 BLUE JUMPER R177 C103 R150 C104 100k 400V C102 400V R170 R149 C101 PTC2 100k LJP107 350V ZNR107 R148 LJP110 R171 C105 C106 YELLOW 100k R147 PTC1 R146...
  • Page 92 SCHEMATIC DIAGRAM 2/5 TANK TEMP. SENSOR (50k 3950) CN-TANK LJP112 BROWN FUSE 3.15A 250V LJP109 LJP113 BLACK BLACK 499k 499k 1/4W 1 1/4W 1 499k 499k 1/4W 1 1/4W 1 R139 R134 8.25k 7.68k R205 CN203 R203 R206 Q201 6.3V 2SC2412K R204 100k...
  • Page 93 SCHEMATIC DIAGRAM 3/5 2 x fHz RY-2 RY-1 6 13 12 CN201 3 R218 CN202 R212 R213 R214 R215 R216 R217 R249 CN201 16 CN202 5 CN202 9 R211 10k CN202 6 CN202 7 R210 10k C227 R252 0.56 6.3V R253 1k CN203 C220...
  • Page 94 SCHEMATIC DIAGRAM 4/5 4 WAYS VALVE CN-FW1 CN-HOT (XH7-5) (VH3-2) 10k x 6 0.047 6.3V ERA15-06 TC74HCT700AF 0.047 (FC) 1000p x 6 0.22 630V R199 0.047 R102 PTC3 ZPC56CH251A1UC RY-2 ALD112A01 ERA15-06 RY-1 ALA2ZF12E01 RD24EB2 DTA143XK 4.7k 5.11k 5.11k RY-PWR DTC143XK ERA15-01 2SC2411KRTX...
  • Page 95 SCHEMATIC DIAGRAM 5/5 T101 ETXMJ326X1C NJM78M15F ERA2204-04 0.01 0.01 (FC) D8 ERB83-006 0.22 630V (MF) NJM78M05F 0.01 ERA22-04 4.7k 1/4W (FC) AUO1A x 3 0.47 630V HV1C1 0.047 (MDS) (FC) (FC) HV1C2 0.047 (FC) BLUE COMPRESSOR HV1C3 0.047 (FC) YELLOW LVIC U OUT 1000p x 3...
  • Page 97 How to use electronic circuit diagram TIMER TABLE <INDOOR> Test mode Name Time (When test point Short-circuited) 4 way valve abnormality 4 min. 24 sec. Outdoor air temp. for Hz No. decision 30 min. 0 sec. Anti-dew formation control 20 min. 0 sec.

  • Page 98: Remote Control

    18.1. REMOTE CONTROL...

  • Page 99: Print Patternindoor Unit Printed Circuit

    18.2. PRINT PATTERN INDOOR UNIT PRINTED CIRCUIT BOARD...

  • Page 100: Print Patternoutdoor Unit Printed Circuit

    18.3. PRINT PATTERN OUTDOOR UNIT PRINTED CIRCUIT BOARD VIEW [MAICO] Printed in Malaysia...

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