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Room Air Conditioner

SERVICE MANUAL

MODEL : LW601

ER

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CAUTION

www.zenithappliances.com

• BEFORE SERVICING THE UNIT, READ THE SAFETY 

PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

Summary of Contents for LW6014ERY4

Page 1: ...Room Air Conditioner SERVICE MANUAL MODEL LW601 ER CAUTION www zenithappliances com BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL ...

Page 2: ...TURBO FAN AND FAN 6 2 2 3 MOTOR 7 2 2 4 AIR GUIDE 7 2 3 ELECTRICAL PARTS 7 2 3 1 OVERLOAD PROTECTOR 7 2 3 2 COMPRESSOR 8 2 3 3 CAPACITOR 8 2 3 4 THERMOSTAT 8 2 3 5 ROTARY SWITCH 8 2 3 6 POWER CORD 9 2 4 REFRIGERANT CYCLE 9 2 4 1 CONDENSER 9 2 4 2 EVAPORATOR 10 2 4 3 CAPILLARY TUBE 10 3 INSTALLATION 12 3 1 SELECT THE BEST LOCATION 12 3 2 HOW TO INSTALL 12 3 3 ELECTRICAL DATA 15 4 TROUBLESHOOTING GU...

Page 3: ...T IN ADJUSTABLE THERMOSTAT WASHABLE ONE TOUCH FILTER COMPACT SIZE 1 2 SPECIFICATIONS MODELS ITEMS COOLING CAPACITY BTU h 6 000 POWER SUPPLY Phase V Hz 1ø 115V 60HZ INPUT W 530 OPERATING CURRENT AMP 5 0 REFRIGERANT CONTROL CAPILLARY TUBE REFRIGERANT CHARGE R410A 280g oz INSIDE FAN TURBO FAN G N I R R E G N I L S H T I W N A F R E L L E P O R P N A F E D I S T U O AIR DISCHARGE 2 WAY RIGHT AND LEFT ...

Page 4: ...pered lead and each exposed metallic part on the equipment at all position except Off of the ROTARY SWITCH 4 The value should be over 1 MΩ CAUTION After switching the air conditioner from Cool to Off or F an wait at least 3 min utes before switching it back to Cool Operation High Fan Low Fan High Cool Off Low Cool Thermostat 1 2 3 4 5 6 7 8 9 Off Turns air conditioner off High Fan High speed fan o...

Page 5: ... the cabinet to the base pan and condenser See Figure 3 4 Lift the cabinet from the unit 5 Re install by referring to the procedures above 2 1 3 CONTROL BOARD 1 Disconnect the unit from the power source 2 Remove the front grille Refer to Section 2 1 1 3 Remove the cabinet Refer to Section 2 1 2 4 Remove 2 screws that secure the control board to base pan and air guide See Figure 4 5 Pull the contro...

Page 6: ...ection 2 1 2 4 Remove the control board Refer to Section 2 1 3 5 Remove the air guide upper Refer to Section 2 2 1 6 Remove 2 screws that secure the base pan to condenser See Figure 7 7 Remove screw that secures the shroud to channel of condenser 8 Press the snap area of shroud with your thumbs This allows you to remove it from the condenser 9 Lift the compressor upward with the evaporator and con...

Page 7: ... 2 1 2 4 Remove the control board Refer to Section 2 1 3 5 Remove the air guide upper Refer to Section 2 2 1 6 Remove the compressor turbo fan fan and shroud Refer to Section 2 2 2 7 Remove the motor Refer to Section 2 2 3 8 Remove 2 screws that secure the air guide to the base pan See Figure 11 9 Push the air guide backward and lift it upward See Figure 11 10 Re install by referring to the proced...

Page 8: ...screw which fastens the capacitor clamp 5 Remove all the leads of capacitor terminals 6 Re install the components by referring to the removal procedure above See Figure 15 2 3 4 THERMOSTAT 1 Remove the cabinet Refer to Section 2 1 2 2 Remove the control board Refer to Section 2 1 3 3 Remove 2 screws which fasten the thermostat 4 Remove all the leads of the thermostat terminals 5 Remove the thermos...

Page 9: ...curing the clip with cord to the control board 8 Pull the power cord 9 Re install by referring to procedures above 2 4 REFRIGERANT CYCLE 2 4 1 CONDENSER 1 Remove the cabinet Refer to Section 2 1 2 2 Discharge the refrigerant by using a refrigerant recovery system 3 Remove the air guide Refer to Section 2 2 1 4 Remove 2 screws which fasten the condenser 5 After discharging the refrigerant completel...

Page 10: ...en slowly with the two full turns counterclock wise This will keep oil from foaming and being drawn into the vacuum pump 6 3 Operate the vacuum pump for 20 to 30 min utes until 600 micron vacuum is obtained Close valves A and B and observe vacuum gauge for a few minutes A rise in pressure would indicate a possible leak or moisture remaining in the system With valves A and B closed stop the vacuum ...

Page 11: ... proof seal leak detector tubing cutter hand tools to remove components and service valve B A B A B A COMPOUND GAUGE SEE INSETS BELOW CAPILLARY TUBE EVAPORATOR LOW PRESSURE SIDE COMPRESSOR CONDENSER HIGH PRESSURE SIDE EXTERNAL VACUUM PUMP LO HI CHARGING CYLINDER MANIFOLD GAUGE C Figure 21A Pulling Vacuum Figure 21B Charging ...

Page 12: ...low a clear v ertical opening of 13 from the bot tom of the sash to the window stool 2 If storm window presents interference fasten a 2 wide wood strip to the inner window sill across the full width of the sill The w ood strip should be thic k enough to r aise the height of the windo w sill so that the unit can be installed without interf erence by the storm window frame See Figure 24 Top of w ood...

Page 13: ... Install the L brackets behind the inner window sill with the short side of bracket as shown Use the 2 screws TYPE A provided b The bracket helps to hold unit securely in place Be sure to place bracket edge flush against back of inner sill See Figure 27 TYPE B 4EA WOOD SCREW HARDWARE TYPE A 11EA SHORT SCREW TYPE C 3EA L BACKET TYPE E 1EA SASH SEAL Not adhesive backed TYPE D 1EA SEAL STRIP Adhesive...

Page 14: ...l the windo w opening using 4 scre ws TYPE B to secure them as shown in Figure 31 5 INSTALL THE SASH SEAL AND SASH LOCK a Cut the sash seal TYPE E to the windo w width Stuff the sash seal betw een the glass and the windo w to prevent air and insects from getting into the room as shown in Figure 31 b Fasten the L bracket using a TYPE A scre w as shown in Figure 31 6 Window installation of room air ...

Page 15: ...of potential saf ety hazards we strongly discourage the use of an e xtension cord However if you wish to use an e xtension cord use a CSA certified UL listed 3 wire grounding extension cord rated 15A 125V Do not under any circumstances cut or remove the grounding prong from the plug Line Cord Plug Use Wall Receptacle Power Supply Power supply cord with 3 prong grounding plug Standard 125V 3 wire g...

Page 16: ...OTOR COMPRESSOR ROOM AIR HEAT LOAD CAPILLARY TUBE LIQUID REFRIGERANT LIQUID OUTLET VAPOR INLET COMPLETE LIQUID BOIL OFF POINT SUCTION LINE COOL LOW PRESSURE VAPOR LIQUID PRESSURE DROP DISCHARGE LINE NOT HIGH PRESSURE VAPOR OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH EVAPORATOR COILS CONDENSER COILS ROOM AIR CONDITIONER CYCLE OF REFRIGERATION HIGH PRESSURE VAPOR LIQUID REFRIGERANT LOW PRESSURE...

Page 17: ...nce of inlet outlet air 55 59 F 13 15 C Replacement of unit if the unit is beyond repair Check outdoor coil heat exchanger and fan operation Check heat load increase Check cold air circulation for smooth flow Check gas leakage Clean condenser Not on separate circuit Check inside gas pressure Adjust refrigerant charge Malfunction of compressor Replacement of compressor Check clogging in refrigera t...

Page 18: ...ressor capacitor Replacement of compressor Motor damaged Irregular motor insulation Ω Irregular motor resistance Ω Check of circuit breaker and fuse Gas leakage of feeler bulb of thermostat Check control switch Fan only fails to start Improper wiring Defect of fan motor capacitor Replacement of fan motor Regular but fails to start Replacement of compressor Locking of piston metal Irregular motor r...

Page 19: ...or Discharge Test capacitor capacitor before testing Replace 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 0 22 0 25 inch clearance to the base If necessary shim up the bottom of the fan motor with mounting screw s Check fan moto...

Page 20: ... to the wiring diagram for terminal identification Replace the switch if the circuit is open Thermostat Check the position of knob If not at the coldest setting advance the knob to this setting and restart the unit Check the continuity of the thermostat Replace the thermostat if the circuit is open Capacitor discharge Check the capacitor capacitor before Replace if not within 10 of manufacturer s ...

Page 21: ...ncrease causing the compressor to cycle Straighten the fins or replace the coil Capacitor 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 Unit undersized Determine if the unit is properly sized for the area to be cooled Excessive noise Blower or fan Check ...

Page 22: ... 1 LOCATION NO 1 2 3 4 5 6 7 DESCRIPTION POWER CORD ASSY FAN MOTOR COMPRESSOR ROTARY SWITCH THERMOSTAT CAPACITOR OVERLOAD PROTECTOR 6411A20056A 4681A10016Z TBZ34898801 0CZZA20007W EAF43158805 PART NO SMPS 250V T2A 250V T3 15A MEZ62420702 WH BL ...

Page 23: ...02 354210 349480 352390 1 149980 559011 346811 554030 W48602 130910 550140 554160 567502 135313 152302 135312 264110 238310 W0CZZ 249950 268711 2 263230 237200 268711 1 267110 147582 1 147582 2 145200 749740 135301 731273 352115 352113 552113 35211A ...

Page 24: ...NOV 2012 Printed in China ...

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