Panasonic CS-HE12GKE Service Manual Download Page 42 | Manualshive

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Panasonic CS-HE12GKE Service Manual Download Page 42

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14 Troubleshooting Guide

14.1. Refrigeration Cycle System

In order to diagnose malfunctions, make sure that there are no
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of a compressor and a fan.
The normal outlet air temperature and pressure of the
refrigeration cycle depends on various conditions, the standard
values for them are shown in the table on the right.

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Summary of Contents for CS-HE12GKE

Page 1: ...or Unit 11 6 Refrigeration Cycle Diagram 12 7 Block Diagram 13 8 Wiring Connection Diagram 14 8 1 Indoor Unit 14 8 2 Outdoor Unit 15 9 Electronic Circuit Diagram 16 9 1 Indoor Unit 16 9 2 Outdoor Unit 17 10 Printed Circuit Board 18 10 1 Indoor Unit 18 10 2 Outdoor Unit 19 11 Installation Instruction 21 11 1 Select The Best Location 21 11 2 Indoor Outdoor Unit Installation Diagram 21 11 3 Indoor Un...

Page 2: ...o this installation instruction strictly If installation is defective it will cause water leakage electrical shock or fire 3 Use the attached accessories parts and specified parts for installation and servicing Otherwise it will cause the set to fall water leakage fire or electrical shock 4 Install at a strong and firm location which is able to withstand the set s weight If the strength is not eno...

Page 3: ...tenance 2 Power supply connection to the conditioner Connect the power 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 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 ...

Page 4: ...23 1 820 Refrigeration Control Device Check Valve Capillary Tube Refrigeration Oil cm3 RB68A or Freol Alpha68M 400 Refrigerant R410A g oz 1330 46 9 Dimension Height mm inch 298 11 23 32 540 21 1 4 Width mm inch 870 34 1 4 780 30 23 32 Depth mm inch 199 7 27 32 289 11 3 8 Net Weight kg lbs 12 26 37 82 Pipe Diameter Gas mm inch 9 52 3 8 Liquid mm inch 6 35 1 4 Standard Length m ft 7 5 24 6 Pipe Leng...

Page 5: ...it Fin Corrugated Fin Row x Stage x FPI 2 x 15 18 17 x 19 5 2 x 23 x 17 Size W x H x L mm 671 x 322 6 x 30 9 36 4 x 504 x 824 2 793 7 Air Filter Material PP Type One Touch Item Unit Power Source Phase Voltage Cycle ø Single V 230 Hz 50 Input Power W Cooling 510 120 700 Heating 690 115 1 72k Starting Current A 3 2 Running Current A Cooling 2 4 Heating 3 2 Power Factor Cooling 92 Heating 94 Power fa...

Page 6: ...8 840 Refrigeration Control Device Check Valve Capillary Tube Refrigeration Oil cm3 RB68A or Freol Alpha68M 400 Refrigerant R410A g oz 1330 46 9 Dimension Height mm inch 298 11 23 32 540 21 1 4 Width mm inch 870 34 1 4 780 30 23 32 Depth mm inch 199 7 27 32 289 11 3 8 Net Weight kg lbs 12 26 37 82 Pipe Diameter Gas mm inch 12 7 1 2 Liquid mm inch 6 35 1 4 Standard Length m ft 7 5 24 6 Pipe Length ...

Page 7: ...Fin Corrugated Fin Row x Stage x FPI 3 x 15 18 17 x 19 5 2 x 23 x 17 Size W x H x L mm 671 x 322 6 x 30 9 36 4 x 504 x 824 2 793 7 Air Filter Material PP Type One Touch Item Unit Power Source Phase Voltage Cycle ø Single V 230 Hz 50 Input Power W Cooling 850 120 1 05k Heating 1 04k 115 2 28k Starting Current A 4 8 Running Current A Cooling 4 0 Heating 4 8 Power Factor Cooling 92 Heating 94 Power f...

Page 8: ...Air swing manual and automatic adjusted by Remote Control for vertical airflow and the horizontal airflow Serviceability Improvement Removable and washable Front Panel Breakdown Self Diagnosis function Environmental Protection Non ozone depletion substances refrigerant R410A Operation Improvement Random auto restart control after power failure for safety restart operation Advanced inverter technol...

Page 9: ...9 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 10: ...10 5 Dimensions 5 1 Indoor Unit ...

Page 11: ...11 5 2 Outdoor Unit ...

Page 12: ...12 6 Refrigeration Cycle Diagram ...

Page 13: ...13 7 Block Diagram ...

Page 14: ...14 8 Wiring Connection Diagram 8 1 Indoor Unit ...

Page 15: ...15 8 2 Outdoor Unit ...

Page 16: ...16 9 Electronic Circuit Diagram 9 1 Indoor Unit ...

Page 17: ...17 9 2 Outdoor Unit ...

Page 18: ...18 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board 10 1 2 Indicator Panel ...

Page 19: ...19 10 2 Outdoor Unit 10 2 1 Main Printed Circuit Board ...

Page 20: ...20 ...

Page 21: ...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 short circuit of the discharged air If piping length is over the rated length additiona...

Page 22: ... downward arrow on the installation plate and horizontally from the side arrow on the installation plate see figure above Drill the piping hole at either the right or the left and the hole should be slightly slanted to the outdoor side 11 3 2 TO DRILL A HOLE IN THE WALL AND INSTALL A SLEEVE OF PIPING 1 Insert the piping sleeve to the hole 2 Fix the bushing to the sleeve 3 Cut the sleeve until it e...

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

Page 24: ...loroprene sheathed 5 1 5 mm2 flexible cord type designation 245 IEC 57 or heavier cord Ensure the colour of wires of outdoor unit and the terminal Nos are the same to the indoor s respectively 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 w...

Page 25: ...g piping Connect the piping Align the center of piping and sufficiently tighten the flare nut with fingers Further tighten the flare nut with torque wrench in specified torque as stated in the table Connecting The Piping To Outdoor Unit Decide piping length and then cut by using pipe cutter Remove burrs from cut edge Make flare after inserting the flare nut locate at valve onto the copper pipe Ali...

Page 26: ... vacuum pump and from the service port of the 3 way valve 6 Tighten the service port caps of the 3 way valve at a torque of 18 NO m with a torque wrench 7 Remove the valve caps of both of the 2 way valve and 3 way valve Position both of the valves to OPEN using a hexagonal wrench 4 mm 8 Mount valve caps onto the 2 way valve and the 3 way valve Be sure to check for gas leakage 11 4 4 CONNECT THE CA...

Page 27: ...27 4 Attach the control board cover back to the original position with the screw ...

Page 28: ...e depending on the air conditioner settings and the operation environment The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit 12 1 2 Cooling Operation 12 1 2 1 Thermostat control Compressor is OFF when Intake Air Temperature Internal Setting Temperature 1 5 C Compressor is ON after waiting for 3 m...

Page 29: ...ow chart Every 30 minutes the indoor and outdoor temperature is judged Based on remote control setting temperature the value of T1 will increase up to 10 C T2 will decrease by 3 C and T3 will decrease up to 8 C The Auto Operation Mode shifting will take place whenever operation mode changed from Cooling Soft Dry to Heating or vice versa 12 1 6 Indoor Fan Motor Operation A Basic Rotation Speed rpm ...

Page 30: ... fan motor started feedback control is performed once every second During fan motor on if fan motor feedback 2550 rpm or 50 rpm continue for 10 seconds then fan motor error counter increase fan motor is then stop and restart If the fan motor counter becomes 7 times then H19 fan motor error is detected Operation stops and cannot on back 12 1 7 Outdoor Fan Motor Operation Outdoor fan motor is operat...

Page 31: ...on Powerful ON Five level setting is possible with the remote controller The louver swings between the upper limit and the lower limit After Powerful is turned on the louver is fixed at 26 for 5 minutes or until the Neural Control is stabilized After the Neural Control is stabilized the louver is fixed at 12 Dry Operation Mode Manual Operation Vertical Automatic Operation Power ON Automatic Operat...

Page 32: ...ion The values in the parentheses are for the models CS HE12GKE Heating Operation Mode Manual Operation Vertical Automatic Operation Power ON Five level setting is possible with the remote controller 1 When heat exchanger temperature is less than 32 C 2 When heat exchanger temperature is between 32 C and 56 C 3 When heat exchanger temperature is 56 C or more 1 When heat exchanger temperature is le...

Page 33: ...hanged quiet operation is shifted to quiet operation of the new mode 5 During quiet operation if timer on activates quiet operation maintains 6 After off when on back quiet operation is not memorised Operation Mode Horizontal Automatic Operation Operation for 5 min after Powerful ON or the Neural Control is stabilized Cooling The louver horizontally swings at a fixed cycle Horizontal Automatic Ope...

Page 34: ...ode 5 During quiet operation if timer on activates quiet operation maintains 6 After off when on back quiet operation is not memorised C Control contents a Fan speed auto 1 Indoor FM RPM depends on pipe temp sensor of indoor heat exchanger Auto fan speed is changed from normal setting to quiet setting of respective fan speed This is to reduce sound of Hi Me Lo for 3dB b Fan speed manual 1 Manual f...

Page 35: ... will stop operate at set time 12 1 15 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 2 This type of control is not applicable during ON OFF Timer setting 12 1 16 I...

Page 36: ...will be stopped immediately for 3 minutes 4 The first 30 minutes of cooling operation A will be applied 12 2 1 4 IPM Power transistor Prevention Control A Overheating Prevention Control 1 When the IPM temperature rises to 100 C compressor operation will stop immediately 2 Compressor operation restarts after 3 minutes the temperature decreases to 95 C B DC Peak Current Control 1 When electric curre...

Page 37: ...perature indoor piping temperature is below 4 C During Heating operations Indoor piping temperature indoor suction is under 5 C b Control contents Compressor stops and restart after 3 minutes If the conditions above happen 2 times within 20 minutes the unit will Stop operation Timer LED blinks and F91 indicated 12 2 1 7 Low Frequency Protection Control 1 When the compressor operates at frequency l...

Page 38: ... minutes Timer LED blinking F95 outdoor high pressure rise protection 12 2 2 3 Freeze Prevention Control 1 When indoor heat exchanger temperature is lower than 0 C continuously for 6 minutes compressor will stop operating 2 Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 13 C 3 At the same time indoor fan speed will be higher than during its normal ope...

Page 39: ... air temperature rises above 14 C in order to avoid compressor over loading 12 2 3 3 Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below If the heat exchanger temperature exceeds 60 C compressor will stopped ...

Page 40: ...tch Mode is in standby condition and press any button at remote control to transmit and store the desired transmission code to the EEPROM For transmission code selection explanation please refer to Select Remote Control Transmission Code 4 REMOTE CONTROL RECEIVING SOUND OFF ON MODE The Remote Control Receiving Sound OFF ON Mode will be activated if the Auto OFF ON button is pressed continuously fo...

Page 41: ...t 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 RESET AC To restore the unit s setting to factory default Press once to restore the unit s setting 13 3 5 TIMER To change indoor unit indicator s LED intensity P...

Page 42: ... problems before inspecting the refrigeration cycle Such problems include insufficient insulation problem with the power source malfunction of a compressor and a fan The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions the standard values for them are shown in the table on the right ...

Page 43: ...es after an operation is started Cooling Mode Heating Mode Low Pressure High Pressure Electric current during operating Low Pressure High Pressure Electric current during operating Condition of the air conditioner Insufficient refrigerant gas leakage Clogged capillary tube or Strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression ...

Page 44: ...status 1 Turn power on 2 Press the CHECK button on the remote controller contiguously for 5 seconds 3 will be displayed on the remote controller display Note Display only for No transmitting signal no receiving sound and no Power LED blinking 4 Press the TIMER or button on the remote controller The code H00 no abnormality will be displayed and signal will be transmitted to the main unit The power ...

Page 45: ... sensor defective or disconnected H25 E Ion breakdown Indoor PCB E Ion PCB H27 Outdoor air temperature sensor abnormality Continue for 5 sec O Outdoor temperature sensor defective or disconnected H28 Outdoor heat exchanger temperature sensor abnormality Continue for 5 sec O Outdoor heat exchanger temperature sensor defective or disconnected H33 Indoor Outdoor wrong connection Indoor Outdoor supply...

Page 46: ...Remove the 2 caps and 2 screws at the bottom of discharge vane Fig 1 Fig 2 2 Remove the front panel by pressing Lever Arm with finger Fig 2 High voltages are generated in the electrical parts area by the capacitor Ensure that the capacitor has discharged sufficiently before proceeding with repair work Failure to heed this caution may result in electric shocks ...

Page 47: ...Remove the screw one in center part of the unit Fig 3 5 Remove the Front Grille by releasing the 4 hooks at the top of the Front Grille Hold both side of the Front Grille and remove it by pulling up and toward you gently Fig 3 15 1 2 Removal of Control Board Complete Fig 4 ...

Page 48: ...1 Air Swing Motor for vertical louver CN STM2 Air Swing Motor for horizontal louver CN FM Indoor Unit Fan Motor 15 1 3 Removal of PCB Fig 6 Fig 7 1 Disconnect lead wire from terminal board complete Fig 6 2 Disconnect live wire brown from terminal plate connector Fig 6 3 Release screw from the control board Fig 6 4 Remove control board cover L and control board cover R from the control board Fig 6 ...

Page 49: ...rol boards cover L by releasing the hooks then remove the PCB from the control board cover L Fig 8 15 1 4 Removal of Fan Motor and Cross Flow Fan Fig 9 1 Remove particular piece Fig 9 2 Remove the drain hose from the unit Fig 9 ...

Page 50: ...ar Complete Fig 10 4 Release screw at Gear Complete then remove the Gear Complete Fig 10 5 Pull the Discharge Grille downward then removed it Fig 9 Fig 11 6 Remove the Fan Motor Cover by removing four screws from the Fan Motor Cover Fig 11 ...

Page 51: ...51 Fig 12 7 Remove the screw on the left side of evaporator Fig 12 Fig 13 8 Loosen the screw between the Cross Flow Fan and Fan Motor Fig 13 9 Remove the bearing Fig 12 ...

Page 52: ...52 Fig 14 10 Lift up the Evaporator and remove the Cross Flow Fan from the unit by pulling it to the left and downward Fig 14 Fig 15 11 Pull out the Fan Motor Fig 15 ...

Page 53: ...o particular pieces the Terminal Board Complete Fig 16 4 Removed live brown and neutral blue wire Fig 17 15 1 6 Removal of Air Swing Motors for Vertical and Horizontal Louvers 1 The Air Swing Motors for Vertical and Horizontal louvers can be removed without removal of Discharge Grille 2 Remove the screws from the motors and then remove the cable connectors Fig 18 ...

Page 54: ... another three on the lower side on the Cabinet Front Plate Fig 1 3 Release the hooks four two on the right and another two on the left of the Cabinet Front Plate and remove the Front Plate by holding it up a little Fig 2 15 2 2 Removal of Control Cover and Terminal Cover 1 Remove the screw one on the Control Cover and remove it by sliding it downward Fig 3 2 Remove the Terminal Cover by removing ...

Page 55: ...and the Earth Wire one screw Interconnect cables red white and black Disconnect them from the Terminals The earth terminal yellow green Remove it by unscrewing one screw Remove the screws two fixing the Terminal part and the Cabinet Side Plate Fig 7 5 Remove the Control Box from the unit by holding it up Fig 8 15 2 4 Removal of Control Board 1 Remove the Cabinet Top Plate and Cabinet Front Plate a...

Page 56: ...astic part by removing the screws six on the PCB 15 2 5 Removal of Propeller Fan and Fan Motor 1 Remove the Cabinet Top Plate and Cabinet Front Plate according to 15 2 1 2 Remove the Control Box by releasing the hooks four two each on the both sides Fig 13 3 Remove only the Connector for the CN FM1 Outdoor unit Fan Motor 4 Remove the Propeller Fan by turning the nut in the center of the fan clockw...

Page 57: ...57 16 Technical Data 16 1 Operation Characteristics 16 1 1 CS HE9GKE CU HE9GKE ...

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Page 61: ...61 16 1 2 CS HE12GKE CU HE12GKE ...

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Page 65: ...5 2 24 1 80 0 59 22 0 C 3 09 2 12 0 48 2 88 2 04 0 52 2 68 1 97 0 56 2 44 1 88 0 60 230V Outdoor Temp C Indoor wet bulb temp 30 35 40 46 TC SHC IP TC SHC IP TC SHC IP TC SHC IP 17 0 C 3 47 2 63 0 78 3 24 2 52 0 84 3 02 2 43 0 90 2 74 2 30 0 97 19 0 C 3 50 0 85 19 5 C 3 81 2 76 0 79 3 56 2 65 0 85 3 31 2 55 0 91 3 01 2 43 0 98 22 0 C 4 15 2 86 0 81 3 88 2 75 0 87 3 61 2 65 0 93 3 28 2 53 1 00 TC SH...

Page 66: ...7 Exploded View and Replacement Parts List 17 1 Indoor Unit 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 67: ...LE 12V 250 OHM 1 CWA981105J 22 LEADWIRE A S MOTOR AND GEAR 1 CWA67C5748 23 WIRE NET 1 CWD041083 24 CAP DRAIN TRAY 1 CWH521091 25 FLARE NUT 3 8 1 2 1 CWT251031 CWT251032 26 SENSOR COMPLETE 1 CWA50C2467 27 HOLDER SENSOR 1 CWH32137 28 GEAR COMPLETE INTAKE GRILLE 1 CWH68C1021 29 PIPE COVER 1 CWD911317 30 ELECTRONIC CONTROLLER MAIN 1 CWA73C2872 31 CONTROL BOARD COVER L 1 CWH131163 32 CONTROL BOARD COVE...

Page 68: ...68 17 2 Outdoor Unit 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 69: ...R 1 CWT01C4251 24 STRAINER 1 CWB11094 25 DRYER 1 CWB101016J 26 SENSOR COMPLETE 1 CWA50C2066 27 TERMINAL COVER 1 CWH171039A 28 NUT TERMINAL COVER 1 CWH7080300J 29 WIRE NET 1 CWD041111A 30 SOUND PROOF BOARD 1 CWH151176 31 REACTOR 1 G0C193J00003 G0C193J00004 32 HOLDER SENSOR 1 CWH321023 33 SENSOR COMPLETE 1 CWA50C2402 34 SENSOR COMPLETE 1 CWA50C2281 35 CONTROL BOARD CASING 1 CWH102294 36 TERMINAL BOA...

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