Panasonic CS-C18GKD Service Manual Download | Manualshive

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15 Disassembly and Assembly Instructions

15.1. Indoor Electronic Controllers and Control Board Removal Procedures

WARNING

• Cautions! When handling electronic controller, be careful of electrostatic discharge.
• Be sure to return the wiring to its original position.
• There are many high voltage components within the heat sink cover so never touch the interior during operation. Wait at least two minutes after

power has been turned off.

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Summary of Contents for CS-C18GKD

Page 1: ...ONTENTS PAGE PAGE 1 Safety Precautions 3 2 Specifications 5 2 1 CS C18GKD CU C18GKD 5 2 2 CS C24GKD CU C24GKD 7 3 Features 9 4 Location of Controls and Components 10 4 1 Product Overview 10 5 Dimensions 11 5 1 Indoor Unit Remote Control 11 5 2 Outdoor Unit 12 6 Refrigeration Cycle Diagram 13 7 Block Diagram 14 8 Wiring Connection Diagram 15 8 1 CS C18GK CU C18GK 15 8 2 CS C24GK CU C24GK 16 9 Elect...

Page 2: ...ndom Auto Restart Control 38 12 13 Remote Control Signal Receiving Sound 38 12 14 Patrol Operation 39 12 15 e ion Operation 42 13 Servicing Mode 45 13 1 Auto OFF ON Button 45 13 2 Select Remote Control Transmission Code 45 13 3 Remote Control Button 46 14 Troubleshooting Guide 47 14 1 Refrigeration cycle system 47 15 Disassembly and Assembly Instructions 49 15 1 Indoor Electronic Controllers and C...

Page 3: ...work follow the local national wiring standard regulation and the installation instruction An independent circuit and single outlet must be used If electrical circuit capacity is not enough or defect found in electrical work it will cause electrical shock or fire 6 Use the specified cable and connect tightly for indoor outdoor connection Connect tightly and clamp the cable so that no external forc...

Page 4: ...er supply cord of the air conditioner to the mains using one of the following methods Power supply point shall be the place where there is ease for ease for access for the power disconnection in case of emergency In some countries permanent connection of this room air conditioner to the power supply is prohibited 1 Power supply connection to the receptacle using a power plug Use an approved power ...

Page 5: ... 10 13 16 540 21 1 4 Width mm inch 998 39 9 32 780 30 23 32 Depth mm inch 230 9 1 16 289 11 3 8 Net Weight kg lbs 11 24 41 90 Pipe Diameter Gas mm inch 12 70 1 2 Liquid mm inch 6 35 1 4 Height Difference m ft 20 65 6 Pipe Length Range m ft 3 9 8 25 82 0 Additional Gas Amount g m oz ft 20 0 2 Refrigeration Charge Less m ft 7 5 24 6 Drain Hose Inner diameter mm 16 Length mm 650 Compressor Type Rotar...

Page 6: ...age Cycle ø Single Single V 220 230 Hz 50 50 Input power W 1 72k 1 76k Starting Current A 36 36 Running Current Cooling A 8 2 8 3 Power Factor Cooling A 95 92 Power factor means total figure of compressor indoor fan motor and outdoor fan motor Power Cord Number of core 3 1 5mm Length m ft 2 6 Thermostat Protection Device ...

Page 7: ...6 750 29 17 32 Width mm inch 998 39 9 32 875 34 7 16 Depth mm inch 230 9 1 16 345 13 19 32 Net Weight kg lbs 11 24 58 128 Pipe Diameter Gas mm inch 15 88 5 8 Liquid mm inch 6 35 1 4 Height Difference m ft 20 65 6 Pipe Length Range m ft 3 9 8 25 82 0 Additional Gas Amount g m oz ft 30 0 3 Refrigeration Charge Less m ft 7 5 24 6 Drain Hose Inner diameter mm 16 Length mm 650 Compressor Type Rotary 1 ...

Page 8: ...cle ø Single Single V 220 230 Hz 50 50 Input power kW 2 35 2 41 Starting Current A 65 65 Running Current Cooling A 11 5 11 6 Power Factor Cooling A 93 88 Power factor means total figure of compressor indoor fan motor and outdoor fan motor Power Cord Number of core 3 2 5mm Length m ft 2 6 Thermostat Mechanical Protection Device ...

Page 9: ...capture dust particles and bring it back with a boomerang like mechanism Quality Improvement Random auto restart after power failure for safety restart operation Gas leakage protection Prevent compressor reverse cycle Inner protector to protect Compressor Noise prevention during soft dry operation Blue Coated Condenser for high resistance to corrosion Operation Improvement Quiet mode to provide qu...

Page 10: ...10 4 Location of Controls and Components 4 1 Product Overview 4 1 1 Indoor Unit 4 1 2 Outdoor Unit 4 1 3 Remote Control ...

Page 11: ...11 5 Dimensions 5 1 Indoor Unit Remote Control 5 1 1 CS C18GK CS C24GK ...

Page 12: ...12 5 2 Outdoor Unit 5 2 1 CU C18GK 5 2 2 CU C24GK ...

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

Page 14: ...14 7 Block Diagram ...

Page 15: ...Fan Motor Windings Note Resistance at 25 C of ambient temperature Resistance of Compressor Windings Note Resistance at 20 C of ambient temperature MODEL CU C18GK CONNECTION CWA951264J BLUE GRAY 217 Ω GRAY RED 217 Ω MODEL CU C18GK CONNECTION 2KS314D5AA02 C R 1 487 Ω C S 3 530 Ω ...

Page 16: ...tance at 25 C of ambient temperature Resistance of Compressor Windings Note Resistance at 20 C of ambient temperature MODEL CU C24GK CONNECTION CWA951352J BLUE YELLOW 99 6 Ω YELLOW RED 126 8 Ω YELLOW ORANGE 158 7 Ω MODEL CU C24GK CONNECTION 2JS438D3GA02 C R 0 830 Ω C S 2 257 Ω ...

Page 17: ...17 9 Electronic Circuit Diagram ...

Page 18: ...18 10 Printed Circuit Board 10 1 Indoor Unit TOP VIEW ...

Page 19: ...19 BOTTOM VIEW ...

Page 20: ...20 10 2 Indicator TOP VIEW BOTTOM VIEW ...

Page 21: ...door unit shall be at least 2 5 m OUTDOOR UNIT If an awning is built over the unit to prevent direct sunlight or rain be careful that heat radiation from the condenser is not obstructed There should not be any animal or plant which could be affected by hot air discharged Keep the spaces indicated by arrows from wall ceiling fence or other obstacles Do not place any obstacles which may cause a shor...

Page 22: ...he centre of the hole Another method is by putting measuring tape at position as shown in the diagram above The hole centre is obtained by measuring the distance namely 150 mm and 125 mm for left and right hole respectively Drill the piping hole at either the right or the left and the hole should be slightly slanted to the outdoor side 11 1 2 TO DRILL A HOLE IN THE WALL AND INSTALL A SLEEVE OF PIP...

Page 23: ...23 3 For the embedded piping This can be used for left rear piping and left bottom piping also ...

Page 24: ...vely Earth lead wire shall be longer than the other lead wires as shown in the figure for the electrical safety in case of the slipping out of the cord from the anchorage Secure the cable onto the control board with the holder clamper 11 2 Outdoor Unit 11 2 1 INSTALL THE OUTDOOR UNIT After selecting the best location start installation according to Indoor Outdoor Unit Installation Diagram 1 Fix th...

Page 25: ...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 3 Please make flare after inserting the flare nut onto the copper pipes 11 2 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 Conn...

Page 26: ... polychloroprene sheathed 3 2 5 mm2 flexible cord type designation 245 IEC 57 or heavier cord 3 Secure the cable onto the control board with the holder clamper 4 Attach the control board cover to the original position with the screw 11 2 5 Pipe Insulation 1 Please carry out insulation at pipe connection portion as mentioned in Indoor Outdoor Unit Installation Diagram Please wrap the insulated pipi...

Page 27: ...the room temperature reaches the setting temperature set on the remote control The remote control setting temperature which takes the reading of intake air temperature sensor can be adjusted from 16 C to 30 C During cooling operation the compressor will stop running and restart as shown in below figure 12 1 1 Cooling Operation Time Diagram ...

Page 28: ...egins Soft Dry will be switched ON for a maximum 10 minutes then Soft Dry operation will be turned OFF for a minimum 6 minutes After that the Soft Dry operation will be ON and OFF based on the setting temperature as shown in below figure However after 3 minutes of compressor off during Soft Dry OFF within 6 minutes Soft Dry restart control the indoor unit will start to operate at normal Cooling mo...

Page 29: ... at determined operation mode until it is switched off using remote control with the setting temperature as shown in below table The setting temperature for all the operations can be changed one level up or one level down from the standard temperature as shown in below table by pressing on the temperature up or temperature down button at remote control The operation mode judging temperature and st...

Page 30: ... the built up humidity inside a room 12 4 3 60 Seconds Forced Operation Once the air conditioner is turned on the compressor will not stop within 60 seconds in a normal operation although the intake air temperature has reached the thermo off temperature However force stop by pressing the OFF ON operation button at the remote control is permitted The reason for the compressor to force operate at mi...

Page 31: ... reason of the difference is to reduce the starting current flow 12 4 7 Dew Prevention Control Purpose is to prevent dew formation on indoor unit air discharge area When room temperature is constant 1 C the following conditions occur for 30 minutes continuously anti dew formation will activate Remote Control setting temperature is less than 25 C Compressor is on Cooling operation mode Indoor Fan m...

Page 32: ...l control angle change from 10 14 18 22 27 to 10 13 16 19 22 under Cooling and Soft Dry operation mode 3 Narrowing Horizontal Airflow Direction During dew prevention control Airflow Direction Auto control angle change form 0 44 to 14 30 under Cooling and Soft Dry operation mode During dew prevention control Airflow Direction Manual control angle change from 0 11 22 33 44 to 14 18 22 26 30 under Co...

Page 33: ...hed to Hi fan speed from Lo after 70 seconds from the start of compressor This cause the room temperature to achieve the setting temperature quickly 4 During compressor stop indoor fan will operate at Lo for the beginning 20 seconds to prevent higher volume of refrigerant in liquid form returning to the compressor 5 After the compressor at turn off condition for 3 minutes indoor fan will start to ...

Page 34: ...ual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control There are 3 types of fan speed settings Lo Me Hi 12 6 Outdoor Fan Speed Control There is only one speed for outdoor fan motor C18GK There is 2 speed for outdoor fan motor Outdoor fan speed can be changed to Hi or Lo according to outdoor temperature For Cooling or Soft Dry operation when outdoo...

Page 35: ... control the automatic airflow is released and the airflow direction louver move up and down in the range shown in the diagram The louver can be adjusted by pressing the button to the desired louver position When stopped with remote control the discharge vent is reset and stop at the closing position 12 8 Horizontal Airflow Direction Control 12 8 1 Auto Control When the horizontal airflow directio...

Page 36: ...en Powerful operation is set the setting temperature will be automatically decreased 3 C internally against the present setting temperature Lower temperature limit 16 C This operation automatically will be running under SHi Fan Speed Cooling Vertical Airflow Direction In Manual setting the vane will automatically shift down 10 lower than previous setting In Auto setting the vane will automatically...

Page 37: ...uiet operation stops when Quiet button is pressed again Stopped by OFF ON operation button Timer OFF activates Powerful button is pressed 12 11 Timer Control 12 11 1 ON Timer When the ON Timer is set by using the remote control the unit will start to operate slightly before the set time so that the room will reach nearly to the set temperature by the set time For Cooling and Soft Dry operation the...

Page 38: ...peration the air conditioner will automatically restart after 3 to 4 minutes when the power is resumed It will start with previous operation mode and airflow direction If there are more than one air conditioner unit in operation and power failure occur restart time for each unit to operate will be decided randomly using 4 parameters intake air temperature setting temperature fan speed and air swin...

Page 39: ...During cooling only operation Patrol button is pressed b Patrol operation stop condition When any of the following condition is fulfilled When OFF ON button is pressed During any operation with Patrol Patrol button is pressed again When e ion button is pressed When OFF Timer activates c Patrol operation disable To disable the Patrol Operation during unit start default with OFF ON button press Patr...

Page 40: ...evel 2 Contaminated Dirtiness level sensitivity adjustment It is possible to change the gas sensor sensitivity where the Threshold value G1 G4 will be shifted accordingly a Press and release SET button b Press Timer increment Timer decrement button to select sensitivity Low Standard Default High c Confirm setting by pressing Timer Set button LCD returned to original display after 2 seconds d LCD r...

Page 41: ...tioner and no change on LCD display During Patrol individual operation if e ion stops Airflow direction louver closed e Indicator When Patrol operation starts Patrol Sensor indicator ON When e ion operation starts based on dirtiness level e ion indicator ON f Remote Control Receiving Sound g Timer Control When ON timer activates when unit stops previous operation resumes without Patrol operation W...

Page 42: ...starts During unit is OFF if e ion button is pressed e ion individual operation starts b e ion operation stop condition When OFF ON button is pressed to stop the operation When e ion button is pressed again When Patrol button is pressed When OFF Timer activates c e ion operation pause condition When indoor fan stop during deice odor cut control thermostat off etc e ion operation resume after indoo...

Page 43: ...isplay c Timer control When ON timer activates when unit stops previous operation resumes without e ion operation When ON timer activates during any operation no change and carry on current operation When OFF timer activates during any operation all operation stops d Indicator When e ion operation starts e ion indicator ON e e ion Check Mode To check if e ion is malfunctioning during e ion operati...

Page 44: ... and check the e ion AIR PURIFYING SYSTEM main connector to PCB After that press e ion button again to confirm the e ion indicator not blinking The 24 times counter will be clear after 10 minutes of normal operation or when operation stops 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 ...

Page 45: ...occur at to identify the starting of Remote Control Receiving Sound Off On Mode Press Auto OFF ON button to toggle remote control receiving sound Short beep Turn ON remote control receiving sound Long beep Turn OFF remote control receiving sound After Auto OFF ON Button is pressed the 20 seconds counter for Remote Control Receiving Sound OFF ON Mode is restarted 13 2 Select Remote Control Transmis...

Page 46: ...und will be heard LCD returns to original display after 2 seconds LCD returns to original display if remote control does not operate for 30 seconds 13 3 2 CLOCK BUTTON To change the remote control s time format Press for more than 5 seconds 13 3 3 RESET RC To clear and restore the remote control setting to factory default Press once to clear the memory 13 3 4 TIMER To change indoor unit indicator ...

Page 47: ... 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 48: ...logged capillary tube or Strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression Nature of fault Symptom Electric current during operation becomes approximately 20 lower than the normal value Insufficient compressing of a compressor The discharge tube of the compressor becomes abnormally hot normally 70 to 90 C The difference between high pre...

Page 49: ...s WARNING Cautions When handling electronic controller be careful of electrostatic discharge Be sure to return the wiring to its original position There are many high voltage components within the heat sink cover so never touch the interior during operation Wait at least two minutes after power has been turned off ...

Page 50: ...50 ...

Page 51: ...51 ...

Page 52: ...52 15 2 Indoor Fan Motor and Cross Flow Fan Removal Procedures ...

Page 53: ...53 ...

Page 54: ...54 16 Technical Data 16 1 Thermostat Characteristics Cooling Soft Dry ...

Page 55: ...55 16 2 Operation Characteristics 16 2 1 CS C18GK CU C18GK ...

Page 56: ...56 ...

Page 57: ...57 16 2 2 CS C24GK CU C24GK ...

Page 58: ...58 ...

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