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CONTENTS
CS-C75KE CU-C75KE
CS-C95KE CU-C95KE
CS-C125KE CU-C125KE
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© 2000 Matsushita Air-Conditioning Corp. Sdn. Bhd.
(183914D) All rights reserved. Unauthorized copying
and distribution is a violation of law.
Order No: MAC0010048C2
Room Air Conditioner
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Troubleshooting

   Also See for Panasonic CS-C75KE

   Summary of Contents for Panasonic CS-C75KE

  • Page 1: Table Of Contents

    Order No: MAC0010048C2 Room Air Conditioner CS-C75KE CU-C75KE CS-C95KE CU-C95KE CS-C125KE CU-C125KE CONTENTS Page Page 1 Features 12 Servicing Information 2 Functions 13 Troubleshooting Guide 3 Product Specifications 14 Technical Data 4 Dimensions 15 Exploded View 5 Refrigeration Cycle Diagram...

  • Page 2: Features

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 1 Features • High Efficiency • Quality Improvement − Gas leakage protection • Compact Design − Prevent compressor reverse cycle − 2-stage OLP to protect compressor • Comfort Environment − Noise prevention during soft dry operation. −...

  • Page 3: Functions

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 2 Functions Remote Control Self illuminating button OFF / ON I TEMP. Operation OFF / ON Room Temperature Setting • Temperature Setting (16°C to 30°C) • Automatic Operation MODE Operation Mode Selection 2°C higher than standard...

  • Page 4: Indoor Unit

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Indoor Unit AUTO OFF / ON Automatic Operation Button Random Auto Restart Control • Press for < 5s to operate Automatic • Operation is restarted randomly after operation mode. power failure at previous setting mode. (Used when the remote control cannot be used.) Anti-Freezing Control •...

  • Page 5: Outdoor Unit

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Outdoor Unit CU-C75KE / CU-C95KE CU-C125KE Compressor Reverse Rotation Protection Control • To protect compressor from reverse rotation when there is a instantaneous power failure. Overload Protector • 2-Stage OLP to protect the compressor.

  • Page 6: Product Specifications

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 3 Product Specifications Unit CS-C75KE CU-C75KE Cooling Capacity 2.05 - 2.00 kcal/h 1,760 - 1,810 Moisture Removal Pint/h Power Source Phase Single 230 - 220 Cycle Airflow Method OUTLET SIDE VIEW TOP VIEW...

  • Page 7

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Heat Exchanger Description Evaporator Condenser Tube material Copper Copper Fin material Aluminium (Pre Coat) Aluminium Fin Type Slit Fin Louver Fin Row / Stage (Plate fin configuration, forced draft) 2 × 14 1 ×...

  • Page 8

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Unit CS-C95KE CU-C95KE Cooling Capacity 2.75 - 2.65 kcal/h 2,360 - 2,280 Moisture Removal Pint/h Power Source Phase Single 230 - 220 Cycle Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE Air Volume Indoor Air (Lo) /min (cfm) 6.6 (230) - 6.2 (220)

  • Page 9

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Heat Exchanger Description Evaporator Condenser Tube material Copper Copper Fin material Aluminium (Pre Coat) Aluminium Fin Type Slit Fin Louver Fin Row / Stage (Plate fin configuration, forced draft) 2 × 14 1 ×...

  • Page 10

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Unit CS-C125KE CU-C125KE Cooling Capacity 3.65 - 3.52 kcal/h 3,140 - 3,030 Moisture Removal Pint/h Power Source Phase Single 230 - 220 Cycle Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE Air Volume Indoor Air (Lo) /min (cfm) 6.4 (230) - 5.9 (210)

  • Page 11

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Heat Exchanger Description Evaporator Condenser Tube material Copper Copper Fin material Aluminium (Pre Coat) Aluminium Fin Type Slit Fin Louver Fin Row / Stage (Plate fin configuration, forced draft) 2 × 14 1 ×...

  • Page 12: Dimensions

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 4 Dimensions...

  • Page 13

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE...

  • Page 14: Refrigeration Cycle Diagram

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 5 Refrigeration Cycle Diagram...

  • Page 15: Block Diagram

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 6 Block Diagram...

  • Page 16: Wiring Diagram

    REMARKS : BLUE : BROWN : BLACK : WHITE : RED : ORANGE : PINK : YELLOW/GREEN Resistance of Indoor Fan Motor Windings MODEL CS-C75KE CS-C95KE CS-C125KE CONNECTION CWA921033 CWA921034 CWA921031 536.5 Ω 461.1 Ω 457.4 Ω YELLOW-BLUE 77.1 Ω...

  • Page 17: Operation Details

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 8 Operation Details 8.1. Cooling Mode Operation Cooling in operation according to Remote Control setting. Time Delay Safety Control (3 minutes) • When the compressor is stopped by Remote Control, it restarts after 3 minutes when the Remote Control is turned ON.

  • Page 18

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Automatic Fan Speed Mode When Automatic Fan Speed is selected at Remote Control during cooling operation. • Fan speed rotates in the range of Hi to Me. • Deodorizing Control. Cooling Operation Time Diagram...

  • Page 19: Soft Dry Mode Operation

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 8.2. Soft Dry Mode Operation • The unit starts cooling operation until the room temperature reaches the setting temperature set on the Remote Control, and then Soft Dry operation will start. • During Soft Dry operation, the Indoor Fan will operate at low speed.

  • Page 20

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Soft Dry Operation Time Diagram...

  • Page 21: Air Circulation Mode Operation

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 8.3. Air Circulation Mode Operation • When the temperature near the ceiling reaches the setting temperature, Air Circulation Mode operation commences at low airflow volume. It stops when the temperature drops to 2°C below the setting temperature.

  • Page 22: Powerful Mode Operation

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 8.5. Sleep Mode Auto Operation Cooling or Soft Dry Operation When you press the SLEEP Mode, the following movement will start to avoid overcooling. • When room temperature reaches setting temperature or after 1 hour of operation, sleep shift operation starts and the airflow volume will automatically change to low.

  • Page 23: Random Auto Restart Control

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 8.8. Random Auto Restart Control • If there is a power failure, operation will be automatically restarted after 3 to 5 1/2 minutes when the power is resumed. It will start with previous operation mode and airflow direction.

  • Page 24: Airflow Direction Control

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 8.10. Airflow Direction Control Airflow Direction Auto-Control • When set a Airflow Direction Auto-Control with remote control, the louver swings up and down as shown in the diagram. • The louver does not swing when the Indoor Fan stops during operation.

  • Page 25: Operating Instructions

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 9 Operating Instructions SAFETY PRECAUTIONS Before operating, please read the following “Safety Precautions” carefully. To prevent personal injury, injury to others and property damage, the following instructions must be followed. Incorrect operation due to failure to follow instructions will cause harm or damage, the seriousness of which is...

  • Page 26: Operation Precautions

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Operation Precautions Do not insert plug to operate the unit. Warning Do not pull out plug to stop the unit. This sign warns of death or serious injury. Plug in properly. Do not share outlet. Do not operate with wet hands.

  • Page 27

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Switch off the power supply if the unit is Caution not used for a long period. This sign warns of injury. Do not pull the cord to disconnect the plug. Switch off the power supply before cleaning it.

  • Page 28: Name Of Each Part

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE NAME OF EACH PART Indoor Unit Air Intake Vent Front Panel Power Supply Cord Panel Opener Signal Receptor Horizontal Airflow Direction Air Outlet Vent Louver (Manually adjusted) Operation Indicators Vertical Airflow Direction Louver POWER : Green SLEEP...

  • Page 29

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Outdoor Unit Air Intake Vents Connecting cable (Rear) Drain Hose (Side) Piping Air Outlet Vents Ground Terminal (Inside Cover) Accessories Remote Control Remote Control Holder Remote Control Indication Sticker Two RO3 dry-cell batteries or...

  • Page 30: Remote Control

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Remote Control Operation Display Signal Transmitter OFF/ON Button (Self-illuminating Button) Room Temperature Setting Button (Self-illuminating Button) Powerful Mode Operation Button When the remote control cover is opened Operation Display Operation Mode Selection Button Clock Button Fan Speed Selection Button Economy Mode...

  • Page 31: How To Use The Remote Control

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE How to use the remote control Notes • Do not throw or drop • Do not get it wet • Certain type of flourescent lamps may affect signal reception. Consult your dealer.

  • Page 32: Preparation Before Operation

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE PREPARATION BEFORE OPERATION Indoor Unit Warning Ensure the power plug is securely inserted. A loose plug may cause a fire or an electric shock. Connect the power supply cord to an independent power supply.

  • Page 33: Setting The Clock

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Remote Control Inserting batteries OPEN Slide the cover to open Be sure the directions are correct • Open the remote control cover and confirm the display 12:00 PM is flashing. Set the current time (Clock) immediately to prevent battery exhaustion.

  • Page 34: How To Operate

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE HOW TO OPERATE Automatic, Cooling, Soft Dry, Fan Press to select the desired operation mode Display When pressed, the display changes in this order. COOL Close the Cover Press to start the operation POWER indicator LED (Green) on indoor unit will light up.

  • Page 35

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Adjusting Airflow Direction And Fan Speed Press to select Fan speed • The display changes in this order Automatic Medium High Selecting Vertical Airflow Direction Press AUTO, • The louver swing up and down automatically.

  • Page 36: Setting The Timer

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE SETTING THE TIMER Ensure that the current time is correct before setting the timer. The timer cannot be set if the time display is flashing. Press ON-TIMER Flashes → Set the ON-TIMER to 7:00AM Press to set the time Increase by 10 minutes Decrease by 10 minutes...

  • Page 37

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Recommended Setting of Timer When you sleep • Set the time at which you will go to sleep with the OFF-TIMER. This prevent wastage of electricity. When you wake up • Set the time at which you will wake up with the ON-TIMER.

  • Page 38: Convenience Operation

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE CONVENIENCE OPERATION Sleep Mode This is to obtain a comfortable room temperature while sleeping. To set the sleep mode, press SLEEP. * The sleep indicator on the indoor unit will light up. To cancel the sleep mode, press once more.

  • Page 39

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Economy or Powerful Mode Economy and Powerful operation cannot be selected simultaneously. Economy Mode To save electrical power consumption. However, please use this mode when the room have reached your desired temperature.

  • Page 40: Care And Maintenance

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE CARE AND MAINTENANCE Cleaning the Indoor Unit and Remote Control • Wipe gently with a soft, dry cloth. • Do not clean with water hotter than 40°C or with polishing fluids. Caution •...

  • Page 41: Cleaning The Front Panel

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Cleaning the Front Panel (Must be removed before washing) Caution • Stand on a level surface when • Do not touch the metal parts in • Do not leave water on the removing the front panel.

  • Page 42

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Replacing the Air Purifying Filters (Once every 3 month) • Do not reuse dirty filters. Consult the nearest authorized dealer. (Air Purifying filter No. CZ-SFD50N) • These filters function effectively for not more than three months. •...

  • Page 43

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Pre-season Inspection • Is the discharge air cold? Operation is normal if 15 minutes after the start of operation, the difference between the air intake and outlet vents temperatures is 8°C or above for cooling.

  • Page 44: Troubleshooting

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE TROUBLESHOOTING Normal Operation - Is it okay? - This is the answer. - Air conditioner has been restarted, but does not operate for 3 minutes. - A sound like water flowing can - This is to protect the air conditioner.

  • Page 45: Abnormal Operation

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Abnormal Operation Hmmm! The air conditioner does not operate. Air conditioner operation noise too loud. • Has a circuit breaker been tripped? • Is the installation work slanted? • Has the power plug been removed •...

  • Page 46: Helpful Information

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE HELPFUL INFORMATION Auto Operation Button Automatic Operation • If the remote control fails to function or misplaced, press Auto Operation button for Automatic operation. • The Automatic operation will be activated immediately once the Auto operation button is pressed.

  • Page 47: Energy Saving And Operation Hints

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE ENERGY SAVING AND OPERATION HINTS Air Filter and Air Purifying Filter Clean the air filter every 2 weeks and change the Air Purifying Filter every 3 months. Dirty filter may reduces cooling Setting Temperature efficiency.

  • Page 48

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Warning 1) This appliance must be earthed. 2) If the supply cord is damaged or need to be replaced, it must be replaced by the manufacturer or its service agent or a similarly qualified person in order to avoid a hazard. 3) Remove power plug or disconnect from the mains before servicing this appliance.

  • Page 49: Installation Instructions

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 10 Installation Instructions Required tools for Installation Works 1. Phillips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter 2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench 18 N.m (1.8 kgf.m)

  • Page 50

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 1. Grounding is necessary. 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 51

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE Attached accessories Indoor/Outdoor unit installation diagram Applicable piping kit CZ-3F5, 7AEN (CS/CU-C75KE, C95KE) CZ-4F5, 7, 10AN (CS/CU-125KE) SELECT THE BEST LOCATION INDOOR UNIT • There should not be any heat source or steam near the unit.

  • Page 52: Select The Best Location

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 10.2. INDOOR UNIT 10.2.1. SELECT THE BEST LOCATION 10.2.3. TO DRILL A HOLE IN THE WALL (Refer to “Select the best location” AND INSTALL A SLEEVE OF section) PIPING 1. Insert the piping sleeve to the hole. 10.2.2.

  • Page 53

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 3. For the embedded piping (This can be used for left rear piping and left bottom piping also.)

  • Page 54

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 10.2.5. CONNECT THE CABLE TO THE INDOOR UNIT 1. The inside and outside connecting cable can be connected without removing the front grille. 2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 ×...

  • Page 55: Install The Outdoor Unit

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE HOW TO TAKE OUT FRONT GRILLE 10.3. OUTDOOR UNIT Please follow below steps to take out front grille if necessary 10.3.1. SELECT THE BEST LOCATION such as when servicing. (Refer to “Select the best location”...

  • Page 56: Evacuation Of The Equipment

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE CUTTING AND FLARING THE PIPING 5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve. 1. Please cut using pipe cutter and then remove the burrs. 6.

  • Page 57

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE CHECK THE DRAINAGE CHECK ITEMS • Open front panel and remove air filters. Is there any gas leakage at flare nut connections? (Drainage checking can be carried out without removing the Has the heat insulation been carried out at flare nut front grille.)

  • Page 58: 11 2-way, 3-way Valve

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 11 2-way, 3-way Valve 2-way Valve (Liquid Side) 3-way Valve (Gas Side) Works Shaft Position Shaft Position Service Port Shipping Close Closed Closed (With valve cap) (With valve cap) (With cap) Evacuation Closed Closed Open...

  • Page 59: Evacuation Of Installation

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 11.1. Evacuation of Installation WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO If air remain in the indoor unit and refrigeration pipes, it will EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES affect the compressor, reduce to cooling capacity, and could in the following procedure.

  • Page 60: Pumping Down

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 11.2. Pumping down Procedure: 1. Confirm that both the 2-way and 3-way valves are set to 6. Operate the air conditioner at the cooling cycle and the opened position. stop it when the gauge indicates 0 MPa (0 kg/cm •...

  • Page 61

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 11.3. Evacuation of Re-installation WHEN REINSTALLING AN AIR CONDITIONER, BE SURE TO If air remain in the indoor unit and refrigeration pipes, it will EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES affect the compressor, reduce to cooling capacity, and could in the following procedure.

  • Page 62

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 11.4. Balance refrigerant of the 2-way, 3-way valves (Lack of refrigerant in the refrigeration cycle) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the open position. 2. Connect the charge set to the 3-way valve’s service port.

  • Page 63

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 11.5. Evacuation (No refrigerant in the refrigeration cycle) Procedure: 1. Connect the vacuum pump to the charge set’s centre hose. 2. Evacuation for approximately one hour. • Confirm that the gauge needle has moved toward -0.1 MPa (-76 cmHg) [vacuum of 4 mmHg or less.]...

  • Page 64: Gas Charging

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 11.6. Gas charging (After Evacuation) Procedure: 1. Connect the charge hose to the charging cylinder. • Connect the charge hose which you disconnected from This is different from previous procedures. Because you are charging with liquid refrigerant from the gas side, absolutely do the vacuum pump to the valve at the bottom of the no attempt to charge with large amount of liquid refrigerant...

  • Page 65: Servicing Information

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 12 Servicing Information • Inspection points for the Indoor Electronic Controller 1. The Electronic Controller, a signal Receiver and an Indicator (Fig. 2) can be seen by the below steps: − Remove the 2 caps and 2 screws at the bottom of the front grille.

  • Page 66

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 2. Remove the Fan Motor by:- − Release the Fan motor leadwire by pressing the hook at the center of the connector. (Fig. 4 − Then remove the particular piece that holding the fan motor by pressing the tab.

  • Page 67

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE • Cross Flow Fan Removal Procedure. 1. Remove the control board and the fan motor by referring to the “Indoor Fan Motor Removal Procedure”. 2. Remove the evaporator screw. (Fig. 6) Fig. 6 3.

  • Page 68

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE • 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 back cover of the remote control and you will find a resetting terminal, and by shorting it with a minus screwdriver, it will return to normal.

  • Page 69: Troubleshooting Guide

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 13 Troubleshooting Guide 13.1. Refrigeration cycle system In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan.

  • Page 70: Diagnosis Methods Of A Malfunction Of A Compressor

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 13.1.1. Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Condition of the air conditoner Low Pressure High Pressure Electric current during operation Insufficient refrigerant (gas leakage) Clogged capillary tube or Strainer...

  • Page 71: Technical Data

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 14 Technical Data 230V Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 2.03 1.54 0.55 1.90 1.48 0.59 1.77 1.42 0.63 1.61 1.35 0.68 19.0°C 2.05 0.60 19.5°C 2.23 1.61 0.56 2.09 1.55...

  • Page 72

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 220V Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 2.63 1.99 0.71 2.46 1.91 0.76 2.28 1.84 0.81 2.08 1.75 0.88 19.0°C 2.65 0.77 19.5°C 2.89 2.09 0.72 2.70 2.00 0.77 2.51 1.93 0.83 2.28...

  • Page 73

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE...

  • Page 74: Exploded View

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 15 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 75: Replacement Parts List

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 16 Replacement Parts List <Model: CS-C75KE / CS-C95KE / CS-C125KE> DESCRIPTION & NAME Q’TY CS-C75KE CS-C95KE CS-C125KE REMARKS ← ← CHASSY COMPLETE CWD50C338 ← ← PARTICULAR PIECE CWD931019 FAN MOTOR CWA921033 CWA921034 CWA921031 ←...

  • Page 76: Exploded View

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 17 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 77: Replacement Parts List

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 18 Replacement Parts List <Model: CU-C75KE / CU-C95KE> DESCRIPTION & NAME Q’TY CU-C75KE CU-C95KE REMARKS ← CHASSY ASS’Y CWD50K2035A ← FAN MOTOR BRACKET CWD54113 ← SCREW - FAN MOTOR BRACKET CWH4580399 ←...

  • Page 78: Exploded View

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 19 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 79: Replacement Parts List

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 20 Replacement Parts List <Model: CU-C125KE> DESCRIPTION & NAME Q’TY CU-C125KE REMARKS CHASSY ASS’Y CWD50K658A FAN MOTOR BRACKET CWD54254 SCREW - FAN MOTOR BRACKET CWH55189 FAN MOTOR CWA951071 SCREW - FAN MOTOR MOUNT...

  • Page 80: Electronic Parts List

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 21 Electronic Parts List <Electronic Controller Part No.: CWA742323> SYMBOL DESCRIPTION & NAME PART NO. SOUND GENERATOR A48040 D1, D4 DIODE A541SR154-4 DIODE A54CS1VB20E FUSE FUSE XBA2C20TR0 INTEGRATED CIRCUIT A52D0022GB14 INTEGRATED CIRCUIT A52BR9020F INTEGRATED CIRCUIT A52A2003GR2...

  • Page 81: Electronic Circuit Diagram

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 22 Electronic Circuit Diagram • CS-C75KE / CU-C75KE • CS-C95KE / CU-C95KE • CS-C125KE / CU-C125KE SCHEMATIC DIAGRAM 1/3 MAIN RECEIVER (MX-3) PH302C CN-RCV1 VCC1 5.1k 0.01µ 0.01µ VCC2 6.3V 47µ 0.01µ...

  • Page 82

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE SCHEMATIC DIAGRAM 2/3 RY-PWR DRIVE RY-PWR 2SD148-4X 4.7k 2.2k ERA15-01 6.2k 4.7k A55DC143XKTX RELAY DRIVE A55DC143XKTX RELAY DRIVE A52D0001G502 S1VD20 – A52BR9020F 5.1k RELAY DRIVE RELAY DRIVE 0.1µ SIGNAL SIGNAL DISPLAY 0.1µ P22/SCK1 P21/SO1 P20/SI1...

  • Page 83

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE SCHEMATIC DIAGRAM 3/3 AC 220-230V 50/60Hz 102 C THERMAL FUSE CN-FUSE2 CN-FUSE1 (WHT) RY-PWR OVER LOAD PROTECTOR FUSE RY-M RY-H RY-SHI SSR1 ZNR2 YELLOW A56W2DEH1-5 511U 78N12H 78A05 REGULATOR REGULATOR RY-SHI COMPRESSOR 3300µ...

  • Page 84

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE...

  • Page 85

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE How to use electronic circuit diagram TIMER TABLE Test Mode Name Time (When test point Remarks Short-circuited) Sleep Mode Waiting 1 hr. 6 sec. Sleep Mode Operation 8 hrs. 48 sec. Real Timer 1 hr.

  • Page 86

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 22.1. REMOTE CONTROL...

  • Page 87: Print Pattern Indoor Unit Printed Circuit Board

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 22.2. PRINT PATTERN INDOOR UNIT PRINTED CIRCUIT BOARD TOP VIEW...

  • Page 88

    S-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE 22.3. PRINT PATTERN INDOOR UNIT PRINTED CIRCUIT BOARD BOTTOM VIEW...

  • Page 89

    CS-C75KE CU-C75KE / CS-C95KE CU-C95KE / CS-C125KE CU-C125KE [MACC] Printed in Malaysia...

This manual also for:

Cu-c75ke, Cu-c95ke, Cs-c95ke, Cs-c125ke, Cu-c125ke

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