Panasonic CS-E24CKE Service Manual
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Panasonic CS-E24CKE Service Manual

Panasonic air conditioner service manual
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CONTENTS
CS-E24CKE CU-E24CKE
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© 2004 Matsushita Industrial Corp. Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
Order No. MAC0401001C2

Air Conditioner

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Summary of Contents for Panasonic CS-E24CKE

  • Page 1: Table Of Contents

    Order No. MAC0401001C2 Air Conditioner CS-E24CKE CU-E24CKE 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 6 Block Diagram...

  • Page 2: Features

    CS-E24CKE CU-E24CKE 15 Replacement Parts List 18.2. PRINT PATTERN INDOOR UNIT PRINTED CIRCUIT 16 Exploded View BOARD 18.3. PRINT PATTERN OUTDOOR UNIT PRINTED CIRCUIT 17 Replacement Parts List 18 Electronic Circuit Diagram BOARD 18.1. REMOTE CONTROL 1 Features • Product •...

  • Page 3: Functions

    CS-E24CKE CU-E24CKE 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 •...
  • Page 4 CS-E24CKE CU-E24CKE 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 CS-E24CKE CU-E24CKE Outdoor Unit Breakdown Self Diagnosis Time Delay Safety Control 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...

  • Page 6: Product Specifications

    CS-E24CKE CU-E24CKE 3 Product Specifications Unit CS-E24CKE CU-E24CKE Cooling Capacity 6.80 (0.90 - 8.10) kcal/h 5,850 (770 - 6,970) BTU/h 23,200 (3,070 - 27,600) Heating Capacity 8.60 (0.80 - 9.90) kcal/h 7,400 (690 - 8,510) BTU/h 29,300 (2,730 - 33,800)
  • Page 7 CS-E24CKE CU-E24CKE Unit CS-E24CKE CU-E24CKE Pipe Size inch G (gas side) ; 5/8” G (gas side) ; 5/8” (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: Dimensions

    CS-E24CKE CU-E24CKE 4 Dimensions...
  • Page 9 CS-E24CKE CU-E24CKE...

  • Page 10: Refrigeration Cycle Diagram

    CS-E24CKE CU-E24CKE 5 Refrigeration Cycle Diagram...

  • Page 11: Block Diagram

    CS-E24CKE CU-E24CKE 6 Block Diagram...

  • Page 12: Wiring Diagram

    CS-E24CKE CU-E24CKE 7 Wiring Diagram...

  • Page 13: Operation Details

    CS-E24CKE CU-E24CKE 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 14 CS-E24CKE CU-E24CKE 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...

  • Page 15: Compressor Operation Frequency

    CS-E24CKE CU-E24CKE 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 -3.0 -1.5 -2.5 -1.0 -2.0 -0.5 -1.5 -0.5 -1.0 -1.0 -0.5 -1.5 -2.0 -2.5...

  • Page 16: Soft Dry Operation

    CS-E24CKE CU-E24CKE 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 17: Indoor Fan Motor Operation

    CS-E24CKE CU-E24CKE 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 18 CS-E24CKE CU-E24CKE B. Indoor Fan Control i. Indoor fan control operation outline 1. Cooling / Dry 2. Heating...
  • Page 19 CS-E24CKE CU-E24CKE 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 (E24CK). • If move from Maximum, the fan speed no change. • In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E24CK).
  • Page 20 CS-E24CKE CU-E24CKE 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 64 Hz (E24CK) & above. 3. Remote Control setting temperature 16°C.

  • Page 21: Outdoor Fan Motor Operation

    CS-E24CKE CU-E24CKE 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.

  • Page 22: Airflow Direction

    CS-E24CKE CU-E24CKE 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 23 CS-E24CKE CU-E24CKE 2. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the vane will shift to close position.
  • Page 24 CS-E24CKE CU-E24CKE 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.

  • Page 25: Quiet Operation (Heating)

    CS-E24CKE CU-E24CKE 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 26: Powerful Mode Operation

    CS-E24CKE CU-E24CKE 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 27: Auto Restart Control

    CS-E24CKE CU-E24CKE 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 28: Indoor Power Relay Control

    CS-E24CKE CU-E24CKE 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 29: Ionizer Operation Case Study

    CS-E24CKE CU-E24CKE 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 30: Protection Control Features

    CS-E24CKE CU-E24CKE 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.
  • Page 31 CS-E24CKE CU-E24CKE 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 32 CS-E24CKE CU-E24CKE 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 20 Hz 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 33: Outdoor Air Temperature Control

    CS-E24CKE CU-E24CKE 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 34 CS-E24CKE CU-E24CKE 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.

  • Page 35: Protection Control For Heating Operation

    CS-E24CKE CU-E24CKE * If the outdoor temperature < 30°C Me & above (include auto air flow) T < 30 min 30 min T < 90 min 90 min T < 420 min T < 30 min 30 min T < 90 min 90 min T <...
  • Page 36 CS-E24CKE CU-E24CKE 2. Auto Fan Speed Note: a. UP: • If move from Lo, the fan speed will be shifted to Maximum 1300 rpm (E24CK). • If move from Maximum, the fan speed no change. • In up zone, 10 rpm is added for every 10s until Maximum 1300 rpm (E24CK).
  • Page 37 CS-E24CKE CU-E24CKE 8.2.3.3. Outdoor Air Temperature Control The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the below figures. This control will begin one minute after the compressor starts. 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.

  • Page 38: Deice Control

    CS-E24CKE CU-E24CKE 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 • During deice operation, as relationship for outdoor piping temperature and time T5, the priority given to the condition which is first fulfilled and shift to the next mode.
  • Page 39 CS-E24CKE CU-E24CKE 3. Explanation of operation 1) At the deice starting signal, the compressor frequency is set to the value as previously mentioned. 2) At 120 sec. after deice starting signal generated, 4 way valve OFF and at the same time outdoor fan is OFF, indoor fan is OFF, compressor frequency is set to the previously mentioned value.

  • Page 40: Operating Instructions

    CS-E24CKE CU-E24CKE 9 Operating Instructions PRODUCT OVERVIEW Air intake Outdoor Unit Cooling Heating Dehumidifying Air circulation Air outlet Piping, connecting cable Filters under front panel, see page 43 Indoor Unit Direction louver Compressor Ionizer Fluorescent lights may interfere with Under front panel...
  • Page 41 CS-E24CKE CU-E24CKE OPERATION Press button Automatic Internal Function Switch on temperature Select... Automatic Based on the outdoor, indoor and setting temperature, the system automatically chooses. temperature Select... Heating Choose the right temperature to be comfortably Recommended: warm! temperature Select... Cooling...
  • Page 42 CS-E24CKE CU-E24CKE Press button Vertical Fan speed Horizontal Air Flow direction (air volume) direction Direction / volume Select automatic / manual Select Set time Set time Confirm ON & OFF Set time Confirm cancel Confirm TIMER Active every day Timer...

  • Page 43: Power Failure

    CS-E24CKE CU-E24CKE CARE & CLEANING Soaps Neutral household Benzine / Thinner Scouring Filters Wipe gently detergents powder Indoor Unit Filter cleaning see below Ionizer Wash gently.. + dry Front Panel Open manually Clean with Remove Reinstall every 6 months cotton bud...
  • Page 44 CS-E24CKE CU-E24CKE Press button Installation: see enclosed installation PREPARATIONS Plug/breaker instruction! refer page 43 Indoor Unit OPEN front panel Remove AIR filters Place PURIFYING Place AIR filters CLOSE front Panel Plug in filters Year Insert batteries check Set Clock Set current time...
  • Page 45 CS-E24CKE CU-E24CKE TROUBLESHOOTING No problem In case of... Abnormal noise during operation Water / foreign particles have entered the Remote Control Water leak from Indoor Unit Switches / buttons do not operate properly Circuit breaker switches off frequently Power plug / cord become unnaturally warm...
  • Page 46 CS-E24CKE CU-E24CKE Before operating, read the safety SAFETY PRECAUTIONS precautions thoroughly Operation EMERGENCY! NEVER use the plug to switch on/off Immediately isolate from the mains supply (e.g. if there is a smell of burning) Use only for... Do NOT stay long in the stream of cold air...
  • Page 47 CS-E24CKE CU-E24CKE SAFETY PRECAUTIONS & FEATURES Defects Defect / suspicion of defect? —> Attend defects before use! Do NOT repair yourself Engage dealer / specialist OFF and unplug (connector or breaker) Do NOT wash! Waste disposal Uninstalling and disposal of the unit ONLY by dealer /...

  • Page 48: Installation And Servicing Air Conditioner Using R410A

    CS-E24CKE CU-E24CKE 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 49: Tools For Installing/Servicing Refrigerant Piping

    CS-E24CKE CU-E24CKE 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 50: R410A Tools

    CS-E24CKE CU-E24CKE 10.2.2. 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 flaring tool.
  • Page 51 CS-E24CKE CU-E24CKE 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 52 CS-E24CKE CU-E24CKE 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 53: Refrigerant Piping Work

    CS-E24CKE CU-E24CKE 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 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 54 CS-E24CKE CU-E24CKE 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...

  • Page 55: Refrigerant Piping

    CS-E24CKE CU-E24CKE 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 56: Transferring (Using New Refrigerant Piping)

    CS-E24CKE CU-E24CKE 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 57: Recharging Refrigerant During Servicing

    CS-E24CKE CU-E24CKE 10.4.5. 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. 2. Connect the charging hose to the vacuum pump adaptor. At this time, fully open the 2-way valve and 3-way valve.
  • Page 58 CS-E24CKE CU-E24CKE 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 (N ) flow.

  • Page 59: Installation Instructions

    CS-E24CKE CU-E24CKE 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)
  • Page 60 CS-E24CKE CU-E24CKE 1. The equipment must be earthed and installed with earth leakage current breaker. 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 61 CS-E24CKE CU-E24CKE Attached accessories Indoor/Outdoor Unit Installation Diagram Applicable piping kit CZ-4F5, 7, 10BP (E18CK, E21CK) CZ-52F5, 7, 10BP (E24CK) 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 62: Indoor Unit

    CS-E24CKE CU-E24CKE 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 63 CS-E24CKE CU-E24CKE 3. For the embedded piping (This can be used for left rear piping & left bottom piping also.)

  • Page 64: Connect The Cable To The Indoor Unit

    CS-E24CKE CU-E24CKE 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, E24CK) flexible cord, type designation 245 IEC 57 or heavier cord.

  • Page 65: Outdoor Unit

    CS-E24CKE CU-E24CKE 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.
  • Page 66 CS-E24CKE CU-E24CKE 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 67: Connect The Cable To The Outdoor Unit

    CS-E24CKE CU-E24CKE 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, E24CK) flexible cord, type designation 245 IEC 57 or heavier cord.

  • Page 68: Servicing Information

    CS-E24CKE CU-E24CKE 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 69 CS-E24CKE CU-E24CKE 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.

  • Page 70: Breakdown Self Diagnosis Function

    CS-E24CKE CU-E24CKE 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...

  • Page 71: Error Code Table

    CS-E24CKE CU-E24CKE 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 •...

  • Page 72: Remote Control

    CS-E24CKE CU-E24CKE 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 73: Indoor Electronic Controllers Removal Procedures

    CS-E24CKE CU-E24CKE 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 74: Cross Flow Fan And Indoor Fan Motor Removal Procedures

    CS-E24CKE CU-E24CKE 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.
  • Page 75 CS-E24CKE CU-E24CKE 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).

  • Page 76: Outdoor Electronic Controller Removal Procedure

    CS-E24CKE CU-E24CKE 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.

  • Page 77: Technical Data

    CS-E24CKE CU-E24CKE 13 Technical Data...
  • Page 78 CS-E24CKE CU-E24CKE Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 6.75 5.11 2.21 6.30 4.90 2.37 5.86 4.71 2.54 5.33 4.48 2.74 19.0°C 6.80 2.41 19.5°C 7.41 5.35 2.25 6.92 5.14 2.42 6.44 4.95 2.59 5.85 4.71 2.79 22.0°C 8.07 5.55...

  • Page 79: Exploded View

    CS-E24CKE CU-E24CKE 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 80: Replacement Parts List

    CS-E24CKE CU-E24CKE 15 Replacement Parts List <Model: CS-E24CKE> REF. NO. PART NAME & DESCRIPTION QTY. CS-E24CKE REMARKS CHASSY COMPLETE CWD50C1343 FAN MOTOR CWA981056 CROSS FLOW FAN COMPLETE CWH02C1010 SCREW - CROSS FLOW FAN CWH4580304 BEARING ASS’Y CWH64K007 EVAPORATOR CWB30C1451 FLARE NUT...

  • Page 81: Exploded View

    CS-E24CKE CU-E24CKE 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 82: Replacement Parts List

    CS-E24CKE CU-E24CKE 17 Replacement Parts List <Model: CU-E24CKE> REF NO. DESCRIPTION & NAME QTY. CU-E24CKE REMARKS CHASSY ASSY CWD50K2098 ANTI-VIBRATION BUSHING CWH501061 COMPRESSOR C-7RVN153H0V NUT-COMPRESSOR MOUNT CWH56000 SOUND PROOF MATERIAL CWG302215 FAN MOTOR BRACKET CWD541067 FAN MOTOR CWA981111 SCREW - FAN MOTOR BRACKET...

  • Page 83: Electronic Circuit Diagram

    CS-E24CKE CU-E24CKE 18 Electronic Circuit Diagram • CS-E24CKE SCHEMATIC DIAGRAM 1/3 TO OUTDOOR TERMINAL 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 84 CS-E24CKE CU-E24CKE SCHEMATIC DIAGRAM 2/3 RECEIVER R101 IC101 R14 510Ω CN-RCV C101 1kΩ (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)
  • Page 85 CS-E24CKE CU-E24CKE SCHEMATIC DIAGRAM 3/3 ELECTRONIC CONTROL UNIT (CONVERTER UNIT) F001 CN001 L001 C003 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...
  • Page 86 CS-E24CKE CU-E24CKE • CU-E24CKE SCHEMATIC DIAGRAM 1/3 REACTOR GRY1 GRY2 C-PFC2 DC+2 BLUE R174 R175 R196 FUSE101 100k ZNR109 R195 R148 100k R178 R177 232k 232k PTC2 R194 1/4W 1 1/4W 1 DC-1 DC-2 100k BLACK BLACK R176 ZNR107 R197...
  • Page 87 CS-E24CKE CU-E24CKE SCHEMATIC DIAGRAM 2/3 R228 D202 RB500V-40 R223 20k R230 R229 R227 R239 R202 100k R205 R215 C208 IC204 1000p Q201 R201 R201 WC R/B R218 DTA143XK R233 ANI4 R206 R207 R208 4.7k ANI3 RUNNING CURRENT COMPRESSOR DRIVE ANI2...
  • Page 88 CS-E24CKE CU-E24CKE SCHEMATIC DIAGRAM 3/3 NJM78M15F ERA2204-04 (JUMPER) D10 ERB83-006 NJM78M05F R104 R101 R102 R103 110Ω ERA22-04 R126 4.7k 1/4W B1KAC0000008 D13 ERA22-06 R106 HV1C1 33Ω CORE ERA22-06 HV1C2 BLUE ERA22-06 HV1C3 YELLOW LVIC U OUT 1000p 0.047 IN(X) V OUT...
  • Page 89 CS-E24CKE CU-E24CKE...
  • Page 90 CS-E24CKE CU-E24CKE 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.

  • Page 91: Remote Control

    CS-E24CKE CU-E24CKE 18.1. REMOTE CONTROL...

  • Page 92: Print Pattern Indoor Unit Printed Circuit

    CS-E24CKE CU-E24CKE 18.2. PRINT PATTERN INDOOR UNIT PRINTED CIRCUIT BOARD...

  • Page 93: Print Pattern Outdoor Unit Printed Circuit

    CS-E24CKE CU-E24CKE 18.3. PRINT PATTERN OUTDOOR UNIT PRINTED CIRCUIT BOARD [MAICO] Printed in Malaysia...

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