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Panasonic CW-XC184HU, Service Manual, Page: 1 / 37

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Service Manual

Room Air Conditioner

CW-XC184HU
CW-XC244HU

WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the product or products deal with in this service information by anyone else could result in serious injury or death.

© 2003 Matsushita Electric Industrial co., Ltd. 
All rights reserved. Unauthorized copying and
distribution is violation of law.

R

ORDER NO. RAC0310006C1
E9

Summary of Contents for CW-XC184HU

Page 1: ...uals of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products deal with in this service information by anyone else could result in serious injury or death 2003 Matsushita Electric Industrial co Ltd All rights reserved Unauthorized copyi...

Page 2: ... 6 SYNCHRONOUS MOTOR 9 2 4 REFRIGERATION CYCLE 10 2 4 1 CONDENSER 10 2 4 2 EVAPORATOR 10 2 4 3 CAPILLARY TUBE 10 3 INSTALLATION 3 1 HOW TO INSTALL THE UNIT 13 3 2 HOW TO USE THE REVERSIBLE INLET GRILLE 13 3 3 WINDOW REQUIREMENTS 14 3 4 INSTALLATION KITS CONTENTS 14 3 5 SUGGESTED TOOL REQUIREMENTS 15 3 6 CABINET INSTALLATION 16 4 TROUBLESHOOTING GUIDE 4 1 OUTSIDE DIMENSIONS 18 4 2 PIPING SYSTEM 18 ...

Page 3: ...ervicing the unit 1 3 SPECIFICATIONS DB Dry Bulb WB Wet Bulb NOTE Specifications are subject to minor change without notice for further improvement CW XC184HU CW XC244HU POWER SUPPLY Ø V Hz COOLING CAPACITY Btu h POWER INPUT W RUNNING CURRENT A EER Btu h W REFREIGERANT R 22 CHARGE OPERATING INDOOR F C TEMPERATURE OUTDOOR F C EVAPORATOR CONDENSER FAN INDOOR OUTDOOR FAN SPEED FAN COOLING FAN MOTOR O...

Page 4: ...trols the time it will be turned off If the unit is in off state this button controls the time it will start Every time you push this button the remaining time will be set as follows STOPPING OPERATION Every time you push this button when the air conditioner is operating timer is set as follows 1Hour 2Hours 3Hours 4Hours 5Hours 6Hours 7Hours 8Hours 9Hours 10Hours 11Hours 12Hours 0Hour 1Hour 2Hours...

Page 5: ...he BASE PAN Press the drain pipe into the hole by pushing down and away from the fins to avoid injury See Fig 1 Optional CW3H02502C 1 Remove the rubber plug and slide the chassis out from the cabinet See Fig 2 2 Install the drain pan over the corner of the cabinet where you removed the plug with 4 or 2 screws See Fig 3 3 Connect the drain hose to the outlet located at the bottom of the drain pan Y...

Page 6: ...pan forward 2 1 3 CONTROL BOX 1 Remove the front grille Refer to section 2 1 1 2 Pull the base pan forward so that you can remove the 2 screws which fasten the cover control at the right side See Fig 3 3 Remove the 3 screws which fasten the control box See Fig 3 4 Discharge the capacitor by placing a 20 000 ohm resistor across the capacitor terminals 5 Disconnect two wire housings in the control b...

Page 7: ...porator sideward carefully 4 Remove the orifice from the air guide carefully 5 Remove the clamp spring which is clamped to the boss of turbo by hand plier See Fig 5 6 Pull the blower outward without touching blades See Fig 6 7 Re install the components by referring to the removal procedure above 2 2 3 FAN 1 Remove the cabinet Refer to section 2 1 2 2 Remove the brace and shroud cover Refer to sect...

Page 8: ... to section 2 1 2 2 Discharge the refrigerant by using a Refrigerant Recovery System 3 Disconnect the 3 leads from the compressor 4 After purging the unit completely unbraze the suction and discharge tubes at the compressor connections 5 Remove the 3 nuts and the 3 washers which fasten the compressor See Fig 10 6 Remove the compressor 7 Re instill the components by referring to the removal procedu...

Page 9: ...ch has the same specification marked on the supply cord fitted to the unit 2 3 5 THERMISTOR 1 Remove the control box Refer to section 2 1 3 2 Unfold the control box Refer to section 2 3 3 3 Disconnect the thermistor terminals from main P C B assembly 4 Remove the thermistor 5 Re install the components by referring to the removal procedure above See Figure 13 2 3 6 SYNCHRONOUS MOTOR 1 Remove the co...

Page 10: ...n the evaporator at the left side and the top side 5 Move the evaporator sideward carefully and then unbraze the interconnecting tube at the evaporator connectors 6 Remove the evaporator 7 Re install the components by referring to notes See Fig 16 2 4 3 CAPILLARY TUBE 1 Remove the cabinet Refer to section 2 1 2 2 Remove the brace Refer to section 2 2 1 3 After discharging the refrigerant completel...

Page 11: ...nifold connection 5 The system is now ready for final charging 6 Recharge as follows 1 Refrigeration cycle systems are charged from the High side If the total charge cannot be put in the High side the balance will be put in the suction line through the access valve which you installed as the system was opened 2 Connect the charging cylinder as shown in Fig 17B With valve C open discharge the hose ...

Page 12: ...or proof seal Leak detector Tubing cutter Hand Tools to remove components Service valve A COMPOUND GAUGE EVAPORATOR LOW PRESSURE SIDE COMPRESSOR CAPILLARY TUBE CONDENSER HIGH PRESSURE SIDE SEE INSETS BELOW MANIFOLD GAUGE B Figure 17A Pulling Vacuum Figure 17B Charging A B EXTERNAL VACUUM PUMP A CHARGING CYLINDER LOW HI B C ...

Page 13: ... air and insects from getting into the room 8 The power cord must be connected to an independent circuit The green wire must be grounded 9 Connect the drain tube to the base pan hole in the rear side if you need to drain consult a dealer Plastic hose or equivalent may be connected to the drain tube About 1 2 Over 20 HEAT RADIATION FENCE AWNING FOAM COOLED AIR 30 60 Level 1 4 Bubble 3 2 WINDOW REQU...

Page 14: ...ed Foam PE Adhesive Backed Type C 5 Type D 2 Type A 14 Carriage Bolt 2 Lock Nut 4 Type B 7 Foam strip Plain Back Right frame curtain Window locking bracket Left frame curtain Sill bracket 2 Support bracket 2 Drain pipe Top retainer bar is in product package ...

Page 15: ...length Peel off the backing and attach the Foam PE to the underside of the window sash 4 Remove the backing from Foam PE with 3 holes and attach it to the bottom of the Top retainer bar 5 Attach the Top retainer bar onto the top of the cabinet with 3 screws Type A 6 Fasten the curtains to the unit with 10 screws Type A at both sides SCREWDRIVER RULER KNIFE HAMMER PENCIL LEVEL Foam PE Top retainer ...

Page 16: ...N Do not drill a hole in the bottom pan The unit is designed to operate with approximately 1 2 of water in bottom pan 4 Pull the bottom window sash down behind the Top retainer bar until they meet NOTE 1 Do not pull the window sash down so tightly that the movement of Frame curtain is restricted Attach the cabinet to the window stool by driving the screws Type B through the cabinet into window sto...

Page 17: ... the upper window sash and the lower window sash See Fig 29 9 Attach the Window locking bracket with a screw Type C See Fig 30 10 Attach the front grille to the cabinet by inserting the tabs on the grille into the tabs on the front of the cabinet Push the grille in until it snaps into place See Fig 31 11 Lift the inlet grille and secure it with a screw Type A through the front grille See Fig 31 12...

Page 18: ...to Fig 33 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle MOTOR COMPRESSOR OIL LIQUID REFRIGERANT CAPILLARY TUBE OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH SUCTION LINE COOL LOW PRESSURE VAPOR COOLED AIR COMPLETE LIQUID BOIL OFF POINT LIQUID PRESSURE DROP ROOM AIR HEAT LOAD VAPOR INLET HOT DISCHARGED AIR LIQUID OUTLET HIGH PRESSURE VAPOR LIQUID PEFRIGER...

Page 19: ...ck gas leakage Repair gas leak Satisfactory operation with temperature difference of inlet outlet air 44 6 50 F Check heat load increase Unexpected residue Overloaded Circuit Malfunction of compressor Replacement of compressor Check of cold air circulation for smooth flow Dirty indoor coil Heat exchanger Malfunction of fan Clogged of air filter Obstruction at air outlet Correct above trouble Stop ...

Page 20: ... fan motor Regular but fails to start Replacement of compressor locking of rotor metal Improper thermistor setting Loose terminal connection Improper wiring Irregular motor resistance Irregular motor insulation Replacement of compressor Motor damaged Drop of power voltage Check capacitor Replacement Only compressor fails to start Defect of compressor capacitor Check of power source Check of contro...

Page 21: ...he connection between Main and Display all right Is the reset circuit all right The No 18 of Micom is 5V Check the Fuse Check the wiring diagram Check the Main P C B pattern Replace the Trans Replace D02D D05D Replace IC01D Replace IC02D Replace IC01A IC02A Connect connector exactly Check the P C B pattern NO NO NO NO NO NO NO YES YES YES YES YES YES YES NO YES ELECTRIC PARTS TROUBLESHOOTING GUIDE...

Page 22: ... wiring Diagram NO NO NO NO YES YES YES YES Possible Trouble 2 The compressor does not operate Is the wire connection of RY COMP all right Check the RY COMP Connect LEAD Wire to RY COMP again NO YES Possible Trouble 3 The compressor always operate Replace IC01M Replace IC01M Is the voltage NO 1 or 2 or 4 of IC01M DC 5V Is the voltage NO 13 or 15 or 16 of IC01M 0V Check the RY Hi or RY Lo Check the...

Page 23: ...er Ass y Is the connection of CN DISP all right Is the voltage No 17 of CN DISP on Main P C B Ass y DC 5V Replace the battery Check the P C B pattern Connect connector to CN DISP1 exactly NO NO NO YES YES YES Possible Trouble 5 Romote controller does not operate ...

Page 24: ...ion of CN DISP all right Replace the display P C B Ass y Replace IC01G Replace Q01G Q02G Q03G Q04G Connect connector to CN DISP1 exactly Does the Q01G Q02G Q03G Q04G operate normally on main P C B Ass y Possible Trouble 6 It displays abnormally on Display P C B Ass y ...

Page 25: ...ace if not within 10 of manufacturer s rating Replace if shorted open or damaged Will not rotate Fan blade hitting shroud or blower wheel hitting scroll Re align assembly Units using slinger ring condenser fans must have 1 4 to 5 16 inch clearance to the base If necessary shim up the bottom of the fan motor with mounting screw s Check fan motor bearings if motor shaft will not rotate replace the m...

Page 26: ...diagram correct the connections Thermistor Check the TEMP control If not at the lowest number set TEMP control to this setting and restart the unit Check the continuity of the thermistor Replace the thermistor if the circuit is open Capacitor discharge Check the capacitor capacitor before Replace if not within 10 of manufacturer s servicing rating replace if shorted open or damaged Compressor Chec...

Page 27: ...acitor Test the capacitor Wiring Check the terminals If loose repair or replace Refrigeration system Check the system for a restriction Insufficient cooling Air filter If restricted clean or replace Ventilation damper door Close if open Unit undersized Determine if the unit is properly sized for the area to be cooled Excessive noise Turbo fan Check the set screw or clamp If loose or miss ing corre...

Page 28: ...10 5 9 2 3 4 WH BL POWER INPUT BK BR Ribbed Plain GN YL GN GN YL GN THERMISTOR BK BK BL RD BL RD CN TH1 YL YL OR BR OR BR OR BR SYNC MOTOR RY LO RY HI CN WORK CN SYNC CN DISP DISPLAY P W B ASM RY SYNC 250V T2A 115V T2A TRANS FORMER ZNR RY COMP MAIN P W B ASM BK BK BR BR RD BL BL OLP RD MOTOR CAPACITOR F R S COMP C C H 3854AR2330P WIRING DIAGRAM RY MID FUSE RD BK PTC 4 3 5 SCHEMATIC DIAGRAM 5 1 CIR...

Page 29: ...sc out Osc in 16 VAref VSS 18 19 17 13 14 15 TEST 11 SCL SDA 10 9 8 Tx 12 Rx 5V A1 3 4 GND SDA SCL A2 A0 1 2 EEPROM 24LC01BT SMW250 04 1 1 2 2 CN TH1 5V R01B R02H R01H 1 6 2K 1 12 1K RT8 00MG 1M OSC01B 50V C01A 0 01 C02A 1uF 50V 3 20K R01A 6 10 AIR PURIFIER 150 R07G 7 10 8 9 12V 16 2 12 15 3 6 150 150 150 150 150 R03G 3 14 5 12 6 11 4 13 R05G R06G 150 R04G 1 16 2 15 R01G R02G 11 10 7 8 9 8 9 10 A ...

Page 30: ... 30 5 3 COMPONENTS LOCATION FOR MAIN P C B ASM 5 4 COMPONENTS LOCATION FOR DISPLAY P C B ASM ...

Page 31: ...EW MODEL CW XC184HU 7 5 8 2 9 3 6 1 4 A B D C 2 5 1 6 3 4 5 4 1 23 3 2 10 OPE RAT ION TEM P TIME R MOD E ECO NOM Y FAN SPE ED AIR SWI NG Owner sManual 24 5 4 3 2 1 10 25 26 20 18 17 11 22 7 13 9 19 21 17 16 14 12 8 6 15 ...

Page 32: ...L CW XC244HU 7 5 8 2 9 3 6 1 4 A B D C 2 5 1 6 3 4 5 4 1 23 3 2 10 OPE RAT ION TEM P TIME R MOD E ECO NOM Y FAN SPE ED AIR SWI NG Owner sManual 24 20 18 15 9 7 19 14 13 22 17 11 8 10 25 26 16 17 12 21 6 5 3 2 1 ...

Page 33: ...10 CABINET ASS Y CW3091R6057P CW3091R6056J 11 DAMPER VENTILATION CW4900R7265A CW4900R7265A 12 MOUNT MOTOR CW4960R2895B CW4960R2895B 13 MOTOR ASSEMBLY SINGLE CW468120011J CW468120011L R 14 SHROUD CW4998R1597A CW4998R1602A 15 FAN TURBO CW590120009A CW590120009A R 16 FAN AXIAL CW590120010A CW5900R1330B R 17 CLAMP SPRING CW3H02932C CW3H02932C 18 ORIFICE CW494820014A CW494820014A 19 BRACE CW4800R7272A ...

Page 34: ...15A CW355130015A 8 MAIN P C B ASS Y CW687110070T CW687110070T R 9 DISPLAY P C B ASS Y CW687120195T CW687120195T R 10 MOTOR ASS Y SYNC CW2H01102A CW2H01102A R D PIPE 1 TUBE ASSEMBLY SUCTION INDOOR CW521130250D CW52110094B 2 TUBE ASSEMBLY DISCHARGE SINGLE CW521130066A CW521130325D 3 TUBE EVAPORATOR CW521030144L CW521030144U 4 TUBE EVAPORATOR CW521030144T CW521030144V 5 TUBE ASSEMBLY CONNECTOR CW5211...

Page 35: ... 35 MEMO ...

Page 36: ... 36 MEMO ...

Page 37: ...January 2004 P No 3828A20163X Printed in Korea ...

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