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Quasar HQ-2243TH,LWC081 Service Manual

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Service Manual
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.
HQ-2243TH,LWC081
WARNING
© 2003 Matsushita Electric Industrial co., Ltd.
All rights reserved. Unauthorized copying and
distribution is violation of law.
ORDER NO. RAC0212002C1
E9
Room Air Conditioner

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Summary of Contents for Quasar HQ-2243TH,LWC081

  • Page 1 ORDER NO. RAC0212002C1 Service Manual Room Air Conditioner HQ-2243TH,LWC081 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.

  • Page 2: Table Of Contents

    CONTENTS 1. PREFACE 1.1 SAFETY PRECAUTIONS .......2 2.4 REFRIGERATION CYCLE......11 1.2 INSULATION RESISTANCE TEST....2 2.4.1 CONDENSER ........11 1.3 FEATURES .............3 2.4.2 EVAPORATOR ........11 1.4 SPECIFICATIONS ..........3 2.4.3 CAPILLARY TUBE.......11 1.5 CONTROL LOCATIONS .........4 3. INSTALLATION 2. DISASSEMBLY INSTRUCTIONS 3.1 HOW TO INSTALL THE UNIT ......14 2.1 MECHANICAL PARTS........6 3.2 WINDOW REQUIREMENTS......14 2.1.1 FRONT GRILLE ........6...

  • Page 3: Features

    1.3 FEATURES • DESIGNED FOR COOLING ONLY • POWERFUL AND INCREDIBLE COOLING • BUILT-IN ADJUSTABLE THERMOSTAT • WASHABLE ONE-TOUCH FILTER • COMPACT SIZE 1.4 SPECIFICATIONS MODELS HQ-2243TH ITEMS POWER SUPPLY Ø, V, Hz 1, 230/208, 60 COOLING CAPACITY Btu/h. 2,350/2,300 POWER INPUT 2,500/2,450 RUNNING CURRENT...

  • Page 4: Control Locations

    1.5 CONTROL LOCATIONS • OPERATION • FOR MAXIMUM COOLING - Turns air conditioner off. 1. Turn the Operation Knob to the High Cool setting. Med Fan - Med speed fan operation without cooling. 2. Set the Thermostat control to the highest (9) temperature mark.
  • Page 5 • VENTILATION The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions. When fresh air is necessary in the room, set the ventilation lever to the OPEN position. The damper is opened and room air is drawn out. Part B Part A CLOSE...

  • Page 6: Disassembly Instructions

    2. DISASSEMBLY INSTRUCTIONS — Before the following disassembly, POWER SWITCH is set to OFF and disconnected the power cord. 2.1 MECHANICAL PARTS 2.1.1 FRONT GRILLE 1. Open the inlet grille upward or downward. 2. Remove the screw which fastens the front grille. 3.

  • Page 7: Air Handling Parts

    2.2 AIR HANDLING PARTS 2.2.1 COVER (AT THE TOP) 1. Remove the front grille. (Refer to section 2.1.1) 2. Remove the cabinet. (Refer to section 2.1.2) 3. Remove 11 screws which fasten the brace and covers. 4. Remove the covers and the brace. (See Fig. 4) 5.

  • Page 8: Fan

    2.2.3 FAN 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the brace and shroud cover. (Refer to section 2.2.1) 3. Remove the side cover with 2 screws. (See Fig. 7) 4. Remove the 5 or 6 screws which fasten the condenser.

  • Page 9: Capacitor

    2.3.3 CAPACITOR 1. Remove the control box. (Refer to section 2.1.3) 2. Remove the screw and knobs which fasten the display panel. 3. Disconnect the 2 leads from the rocker switch and remove the panel. 4. Remove a screw and unfold the control box. (See Fig.

  • Page 10: Rotary Switch

    2.3.6 ROTARY SWITCH 1. Remove the control box. (Refer to section 2.1.3) 2. Unfold the control box. (Refer to section 2.3.3) 3. Remove 2 screws which fasten the rotary switch. 4. Disconnect all the leads of the rotary switch terminals. 5.

  • Page 11: Refrigeration Cycle

    2.4 REFRIGERATION CYCLE CAUTION Discharge the refrigerant system using Freon Recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon . Leave the valve in place after servicing the system. 2.4.1 CONDENSER 1.
  • Page 12 NOTES — Replacement of the refrigeration cycle. 1. When replacing the refrigeration cycle, be sure to 6. Recharge as follows : discharge the refrigerant system using a Freon 1) Refrigeration cycle systems are charged from the recovery System. High-side. If the total charge cannot be put If there is no valve to attach the recovery system, in the High-side, the balance will be put in the install one (such as a WATCO A-1) before venting...
  • Page 13 Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pinch-off tool capable of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve. Figure 18 - Pulling Vacuum Figure 19 - Charging —13—...

  • Page 14: Installation

    3. INSTALLATION 1/4 Bubble 3.1 HOW TO INSTALL THE UNIT 1. To avoid vibration and noise, make sure the unit is installed securely and firmly. 2. Install the unit where the sunlight does not shine directly on the unit. Level If the unit receives direct sunlight, build an awning to shade the cabinet.

  • Page 15: Installation Kits Contents

    3.3 INSTALLATION KITS CONTENTS Foam strip Foam-PE (Plain-Back) (Adhesive-Backed) Foam-PE (Adhesive-Backed) Left frame curtain Drain pipe Frame guide(2) Window locking bracket Right frame curtain Sill bracket (2) Support bracket(2) Type B (7) Type C (5) Type D (2) Type A (14) Carriage Bolt (2) Lock Nut (4) —15—...

  • Page 16: Suggested Tool Requirements

    3.4 SUGGESTED TOOL REQUIREMENTS SCREWDRIVER(+, -), RULER, KNIFE, HAMMER, PENCIL, LEVEL 3.4.1 PREPARATION OF CHASSIS Shipping screws 1. Remove the screws which fasten the cabinet at both sides and at the back. Keep these two screws which fasten the cabinet at both sides for later use. 2.

  • Page 17: Cabinet Installation

    3.5 CABINET INSTALLATION Sill Bracket 1. Open the window. Mark a line on the center of the window Support Bracket stool between the side window stop moldings. Carriage Lock nut Bolt Loosely attach the sill bracket to the support bracket using (M-Screw) the carriage bolt and the lock nut.
  • Page 18 5. Pull each Frame curtain fully to each window sash track, and pull the bottom window sash down behind the Top retainer bar until it meets. 6. Attach each Frame curtain the window sash by using screws (Type C). (See Fig. 29) Figure 29 7.

  • Page 19: Outside Dimensions

    4. TROUBLESHOOTING GUIDE 4.1 OUTSIDE DIMENSIONS 26(660) (770) 4.2 PIPING SYSTEM CONDENSER COIL CAPILLARY TUBE MOTOR COMPRESSOR BLOWER EVAPORATOR COIL Following is a brief description of the important components and their functions in the refrigeration system. Refer to Fig. 35 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle. ROOM AIR CONDITIONER CYCLE OF REFRIGERATION EVAPORATOR COILS...

  • Page 20: Troubleshooting Guide

    4.3 TROUBLESHOOTING GUIDE In general, possible trouble is classified in two causes. The one is called Starting Failure which is caused from an electrical defect, and the other is Ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application. Unit runs but poor cooling Ineffective Cooling Check of cold air circulation...
  • Page 21 Fails to Start Check of power source. Check of circuit breaker and fuse. Check of control switch Gas leakage of feeler bulb setting. of thermostat Check of control switch. Only compressor fails to Only fan fails to start. start. Improper wiring. Drop of power voltage.
  • Page 22 COMPLAINT CAUSE REMEDY Fan motor will not run. No power Check voltage at outlet. Correct if none. Power supply cord Check voltage to rotary switch. If none, check power supply cord. Replace cord if circuit is open. Rotary switch Check switch continuity. Refer to wiring diagram for terminal identification.
  • Page 23 COMPLAINT CAUSE REMEDY Compressor will not run, Voltage Check voltage. See the limits on the preceding. but fan motor runs. page. If not within limits, call an electrician. Wiring Check the wire connections, if loose, repair or replace the terminal. If wires are off, refer to wiring diagram for identification, and replace.
  • Page 24 REMEDY COMPLAINT CAUSE Capacitor Compressor cycles Test capacitor. on overload. Wiring Check the terminals. If loose, repair or replace. Refrigerating system Check the system for a restriction. Air filter If restricted, clean of replace. Insufficient cooling or Exhaust damper door Close if open.

  • Page 25: Schematic Diagram

    5. SCHEMATIC DIAGRAM 5.1 CIRCUIT DIAGRAM • MODEL : HQ-2243TH POWER INPUT BK(BR) WH(BL) (Plain) (Ribbed) SYNC. M. WIRING DIACRAM ROCKER SWITCH DESCRIPTION Q'TY PER SET POWER CORD ROTARY SWITCH FAN MOTOR CAPACITOR THERMOSTAT COMPRESSOR SYNCHRONOUS MOTOR —25—...

  • Page 26: Exploded View

    6. EXPLODED VIEW • MODEL: HQ-2243TH,LWC081 Ow ner' s Man ual —26—...

  • Page 27: Replacement Parts List

    7. REPLACEMENT PARTS LIST • MODEL: HQ-2243TH R: RECOMMANDABLE PARTS. LOCATION DESCRIPTION PART NO. REMARK FRONT GRILLE ASS'Y CW353110189B GRILLE, FRONT CW353010138A INLET, GRILLE CW353010139A AIR FILTER ASS'Y CW5231R6159F HORIZONTAL LOUVER CW4758R7264J HORIZONTAL LOUVER CW4758R7278J COMP&ACCESSORY ASS'Y ANTI-VIBRATION BUSH CW4022-L005A COMPRESSOR CW2520HFK2CA GASKET...
  • Page 28 September, 2003 P/No.: 3828A20163N Printed in Korea...

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