Quasar Hq-2081th Service Manual

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. 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.

ORDER NO. RAC0212002C1 E9

—2—

1. PREFACE

1.1 SAFETY PRECAUTIONS ...............................2

1.2 INSULATION RESISTANCE TEST.................2

1.3 FEATURES.....................................................3

1.4 SPECIFICATIONS ..........................................3

1.5 CONTROL LOCATIONS.................................4

DISASSEMBLY INSTRUCTIONS

2.1 MECHANICAL PARTS....................................6

2.1.1 FRONT GRILLE.....................................6

2.1.2 CABINET................................................6

2.1.3 CONTROL BOX.....................................6

2.2 AIR HANDLING PARTS..................................7

2.2.1 COVER (AT THE TOP)..........................7

2.2.2 BLOWER................................................7

2.2.3 FAN........................................................8

2.2.4 SHROUD................................................8

2.3 ELECTRICAL PARTS.....................................8

2.3.1 MOTOR..................................................8

2.3.2 COMPRESSOR.....................................8

2.3.3 CAPACITOR..........................................9

2.3.4 POWER CORD......................................9

2.3.5 THERMOSTAT ......................................9

2.3.6 ROTARY SWITCH...............................10

2.3.7 SYNCHRONOUS MOTOR ..................10

2.4 REFRIGERATION CYCLE............................11

2.4.1 CONDENSER......................................11

2.4.2 EVAPORATOR....................................11

2.4.3 CAPILLARY TUBE...............................11

INSTALLATION

3.1 HOW TO INSTALL THE UNIT ......................14

3.2 WINDOW REQUIREMENTS.........................14

3.3 INSTALLATION KITS CONTENTS...............14

3.4 SUGGESTED TOOL REQUIREMENTS.......16

3.5 CABINET INSTALLATION............................17

TROUBLESHOOTING GUIDE

4.1 OUTSIDE DIMENSIONS...............................19

4.2 PIPING SYSTEM ..........................................19

4.3 TROUBLESHOOTING GUIDE......................20

5. SCHEMATIC DIAGRAM

5.1 CIRCUIT DIAGRAM......................................25

6. EXPLODED VIEW..................................26

7. REPLACEMENT PARTS LIST.......27

1. PREFACE

This

SERVICE MANUAL provides various service information, including the mechanical and electrical

parts etc. This room air conditioner was manufactured and assembled under a strict quality control system. The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit.

1.1 SAFETY PRECAUTIONS

1. When servicing the unit, set the ROTARY SWITCH or POWER SWITCH to OFF and unplug the power cord.

2. Observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

3. After servicing the unit, make an insulation resistance test to protect the customer from being exposed to shock hazards.

1.2

INSULATION RESISTANCE TEST

1. Unplug the power cord and connect a jumper between 2 pins (black and white).

2. The grounding conductor (green or green & yellow) is to be open.

3. Measure the resistance value with an ohm meter between the jumpered lead and each exposed metallic part on the equipment at all the positions (except OFF or O) of the ROTARY SWITCH.

4. The value should be over 1MΩ.

CONTENTS

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1.3 FEATURES

• DESIGNED FOR COOLING ONLY

• POWERFUL AND INCREDIBLE COOLING

• BUILT-IN ADJUSTABLE THERMOSTAT

• WASHABLE ONE-TOUCH FILTER

• COMPACT SIZE

1.4 SPECIFICATIONS

HQ-2243TH

POWER SUPPLY Ø, V, Hz COOLING CAPACITY Btu/h. POWER INPUT W RUNNING CURRENT A EER Btu/h.W OPERATING

INDOOR °F(°C)

CONDITION

OUTDOOR

°F(°C) REFREIGERANT (R-22) CHARGE EVAPORATOR CONDENSER

FAN

INDOOR

OUTDOOR

FAN SPEED

FAN/COOLING FAN MOTOR OPERATION CONTROL ROOM TEMP. CONTROL AIR DIRECTION VERTICAL CONTROL

HORIZONTAL

CONSTRUCTION PROTECTOR

COMPRESSOR FAN MOTOR

POWER CORD DRAIN SYSTEM

NET WEIGHT lbs(kg) DIMENSION(W*H*D) inch(mm)

1, 230/208, 60

2,350/2,300 2,500/2,450

11.2/12.0

9.4

DB : 80(26.7) WB : 67(19.4)

DB : 95(35) WB : 75(23.9)

980g (34.6 oz)

3 ROW 15 STACKS, SLIT-FIN TYPE

2 ROW 19 STACKS, LOUVERED-FIN TYPE

TURBO FAN

PROPELLER TYPE FAN WITH SLINGER-RING

2/3

6 POLES

ROTARY SWITCH

THERMOSTAT

MANUAL

AUTO

SLIDE IN-OUT CHASSIS

OVERLOAD PROTECTOR

INTERNAL TERMINAL PROTECTOR

3WIRE WITH GROUNDING

ATTACHMENT PLUG(CORD-CONNECTED TYPE)

DRAIN PIPE OR SPLASHED BY FAN SLINGER

146(66)

26 * 1627/32 * 3023/32 (660 * 428 * 770)

MODELS

ITEMS

* DB:Dry Bulb **

WB:Wet Bulb

❈ The specifications will be changed without notice for further improvement.

1.5 CONTROL LOCATIONS

—4—

• OPERATION

Off - Turns air conditioner off. Med Fan - Med speed fan operation without cooling. Low Fan - Low speed fan operation without cooling. High Cool - Cooling with high speed fan operation. Med Cool - Cooling with med speed fan operation.

Low Cool - Cooling with low speed fan operation.

• THERMOSTAT

This automatically controls the temperature of the indoor air. Turn the knob so that arrow points to the higher number for greater cooling. Point the arrow to the lower number for more moderate cooling. (i.e. the higher the number, the greater the cooling)

• FOR NORMAL COOLING

1. Turn the operation switch to the High Cool or the Low Cool setting.

2. Set the Thermostat control to the desired temperature mark 5 (the mid-point is a good starting position). If the room temperature is not satisfactory after a reasonable time, adjust the control to a cooler or warmer setting, as appropriate.

• FOR MAXIMUM COOLING

1. Turn the Operation Knob to the High Cool setting.

2. Set the Thermostat control to the highest (9) temperature mark.

• FOR QUIETER OPERATION

1. Turn the Operation Knob to the Low Cool setting.

2. Set the Thermostat control as needed.

• AIR SWING

ON - Air swing is operated while OPERATION Knob is

set to the COOL position.

OFF - Stop the operation of air swing.

When the air conditioner has performed its cooling operation and is turned off or set to the fan position, wait at least 3 minutes before resetting to the cooling operation again.

CAUTION

VENTCLOSE

OPEN

Part

Drain pipe

Drain cap

—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.

NOTE: Before using the ventilation feature, and prior to installing the front grille, pull down part until level with part .

• AIR DIRECTION

The direction of air can be controlled wherever you want to cool by adjusting the horizontal louver and the vertical louver.

The vertical air direction is adjusted by rotating the horizontal louver forward or backward manually.

The horizontal air direction is adjusted by rotating the vertical louver right or left manually.

• VERTICAL AIR-DIRECTION CONTROL

•

HORIZONTAL AIR-DIRECTION CONTROL

• HOW TO SECURE THE DRAIN PIPE

In humid weather, excess water may cause the BASE PAN to overflow. To drain the water, remove the DRAIN CAP and secure the DRAIN PIPE to the rear hole of the BASE PAN. Press the drain pipe into the hole by pushing down and away from the fins to avoid injury.

—6—

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. Pull the front grille from the right side.

4. Remove the front grille. (See Fig. 1)

5. Re-install the component by referring to the removal procedure.

2.1.2 CABINET

1. After disassembling the FRONT GRILLE, remove the screws which fasten the cabinet at both sides. Keep these for later use.

2. Remove the two screws which fasten the cabinet at back. (See Fig. 2)

3. Pull the base 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 box.

6. Pull the control box forward completely.

7. Re-install the components by referring to the removal procedure. (See Fig. 3) (Refer to the circuit diagram found on page 28~31 in this manual and on the control box.)

2. DISASSEMBLY INSTRUCTIONS

— Before the following disassembly, POWER SWITCH is set to OFF and disconnected the power cord.

Figure 1

Figure 2

Figure 3

—7—

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. Re-install the components by referring to the removal procedure, above.

2.2.2 BLOWER

1. Remove the cover. (Refer to section 2.2.1)

2. Remove the 3 screws which fasten the evaporator at the left side and the top side. (See Fig. 4)

3. Move the evaporator sideward carefully.

4. Remove the orifice from the air guide carefully.

5. Remove the clamp which secures the blower with plier. (See Fig. 5)

6. Remove the blower with plier or your hand without touching blades. (See Fig. 6)

7. Re-install the components by referring to the removal procedure, above.

Figure 4

Figure 5

Figure 6

—8—

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.

5. Move the condenser sideways carefully.

6. Remove the clamp which secures the fan.

7. Remove the fan. (See Fig. 7)

8. Re-install the components by referring to the removal procedure, above.

2.2.4 SHROUD

1. Remove the fan. (Refer to section 2.2.3)

2. Remove the 2 screws which fasten the shroud.

3. Remove the shroud. (See Fig. 8)

4. Re-install the component by referring to the removal procedure, above.

2.3 ELECTRICAL PARTS

2.3.1 MOTOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the cover control and disconnect a wire housing in control box. (Refer to section 2.1.3)

3. Remove the blower. (Refer to section 2.2.2)

4. Remove the fan. (Refer to section 2.2.3)

5. Remove the 4 screws which fasten the motor. (See Fig. 9)

6. Remove the motor.

7. Re-install the components by referring to the removal procedure, above.

2.3.2 COMPRESSOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. 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.

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 procedure, above.

Figure 7

Figure 8

Figure 9

Figure 10

—9—

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. 11)

5. Remove the screw and the clamp which fastens the capacitor. (See Fig. 11)

6. Disconnect all the leads of capacitor terminals.

7. Re-install the components by referring to the removal procedure, above.

2.3.4 POWER CORD

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 grounding screw from the control box.

4. Disconnect 2 receptacles.

5. Remove a screw which fastens the clip cord.

6. Pull the power cord. (See Fig. 12)

7. Re-install the component by referring to the removal procedure, above. (Use only one ground-marked hole for ground connection.)

8. If the supply cord of this appliance is damaged, it must be replaced by the special cord. (The special cord means the cord which has the same specification marked on the supply cord fitted to the unit.)

2.3.5 THERMOSTAT

1. Remove the control box. (Refer to section 2.1.3)

2. Unfold the control box. (Refer to section 2.3.3)

3. Remove the 2 screws which fasten the thermostat.

4. Disconnect all the leads of thermostat terminals.

5. Remove the thermostat. (See Fig. 13)

6. Re-install the components by referring to the removal procedure, above.

Figure 12

Figure 11

Figure 13

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Quasar Hq-2081th Service Manual

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Frequently Asked Questions

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