Heat Controller RAD-243A, RAD-183A User Manual

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SERVICE MANUAL

AD-183A

AD-243A

CAUTION

• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

Air Conditioner Service Manual

TABLE OF CONTENTS

Safety Precautions..........................................................................................................................................3

Dimensions .....................................................................................................................................................5

Symbols Used in this Manual.....................................................................................................................5

Outside Dimensions...................................................................................................................................5

Product Specifications ..................................................................................................................................6

Installation .......................................................................................................................................................7

Select the Best Location ...........................................................................................................................7

Installation Check.......................................................................................................................................7

How to Secure the Drain Pipe....................................................................................................................7

Window Requirements...............................................................................................................................8

Installation Kits Contents............................................................................................................................8

Suggested Tool Requirements ...................................................................................................................9

Cabinet Installation...................................................................................................................................10

Operation ......................................................................................................................................................12

Features...................................................................................................................................................12

Control Locations Function of Controls....................................................................................................12

Disassembly ..................................................................................................................................................14

Mechanical Parts......................................................................................................................................14

Air Handling Parts ....................................................................................................................................15

Electrical Parts .........................................................................................................................................16

Refrigerating Cycle...................................................................................................................................18

Schematic Diagram.......................................................................................................................................21

Electronic Control Device.........................................................................................................................21

Wiring Diagram.........................................................................................................................................22

Components Lation..................................................................................................................................23

Troubleshooting Guide.................................................................................................................................24

Piping System ..........................................................................................................................................24

Troubleshooting Guide .............................................................................................................................25

Room Air Conditioner Voltage Limits........................................................................................................31

2 Room Air Conditioner

Service Manual 3

Safety Precautions

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must
be followed.

■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.

■ Meanings of symbols used in this manual are as shown below.

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property only.

WARNING

■ Installation

Do not use damaged power cord plugs, or a
loose socket.

• There is risk of fire or electric shock.

Always use the power plug and socket with
the ground terminal.

• There is risk of electric shock.

Be sure not to do.

Be sure to follow the instruction.

4 Room Air Conditioner

Safety Precautions

Do not modify or extend the power cord.

• There is risk or fire or electric shock.

Do not install, remove, or re-install the unit by
yourself.

• There is risk of fire, electric shock, explosion, or injury.

Be cautious when unpacking and installing
the product.

• Sharp edges could cause injury. Be especially careful

of the case edges and the fins on the condenser and
evaporator.

Do not store or use flammable gas or com­bustibles near the air conditioner.

• There is risk of fire or failure of product.

Be sure the installation area does not deterio­rate with age.

• If the base collapses, the air conditioner could fall with

it, causing property damage, product failure, and per­sonal injury.

Gasolin

Sharp edges

Dimensions

Dimensions

Model

Dimension

18K Btu 24K Btu

Outside Dimensions

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the
air conditioner.

This symbol indicates special notes.

NOTICE

Symbols Used in this Manual

Service Manual 5

770

W mm(inch) 660(26") 660(26")

H mm(inch) 428(1627/32") 428(1627/32")

D mm(inch) 770(305/16")

660

770(305/16")

824

Specfications

Product Specifications

Table -1

MODELS

ITEMS

POWER SUPPLY

COOLING CAPACITY

INPUT

E.E.R

REFRIGERANT (R-22) CHARGE(g)

OPERATING INDOOR(°C)

TEMPERATURE OUTDOOR(°C)

EVAPORATOR

CONDENSER

FAN, INDOOR

FAN, OUTDOOR

FAN SPEEDS, FAN/COOLING

FAN MOTOR

RAD-183A

1Ø, 208/230V, 60Hz

17,500/18,000

1,800/1,850

9.0/8.3

720g(25.4oz)

27(DB),19(WB)

35(DB),24(WB)

2 ROW 15 STACKS

LOUVERED-FIN TYP

2 ROW 19 STACKS,LOUVERED-FIN TYPE

L-BENDING TYPE

TURBO

PROPELLER TYPE FAN WITH SLINGER-RING

3/3

6 POLES

OPERATION CONTROL

ROOM TEMP. CONTROL

AIR DIRECTION CONTROL

CONSTRUCTION

PROTECTOR COMPRESSOR

FAN MOTOR

POWER CORD

DRAIN SYSTEM

NET WEIGHT (lbs/kg)

OUTSIDE DIMENSION (inch)

(W x H x D) (mm)

WIRELESS REMOCN

THERMISTOR

VERTICAL LOUVER(RIGHT & LEFT)

HORIZONTAL LOUVER(UP & DOWN)

SLIDE IN-OUT CHASSIS

INTERNAL OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

3 WIRE WITH GROUNDING

CORD-CONNECTED TYPE(ATTATCHMENT PLUG:OPTION)

DRAIN PIPE OR SPLASHED BY FAN SLINGER

137/62

26 x 16 27/32 x 30 5/16

660 x 428 x770

6Room Air Conditioner

Specfications

Product Specifications

Table -1

MODELS

ITEMS

POWER SUPPLY

COOLING CAPACITY

INPUT

E.E.R

REFRIGERANT (R-22) CHARGE(g)

OPERATING INDOOR(°C)

TEMPERATURE OUTDOOR(°C)

EVAPORATOR

CONDENSER

FAN, INDOOR

FAN, OUTDOOR

FAN SPEEDS, FAN/COOLING

FAN MOTOR

830g(29.3oz)

2 ROW 19 STACKS,LOUVERED-FIN TYPE

L-BENDING TYPE

PROPELLER TYPE FAN WITH SLINGER-RING

RAD-243A

1Ø, 208/230V, 60Hz

23,500/23,000

2,760/1,850

8.5/8.5

27(DB),19(WB)

35(DB),24(WB)

3 ROW 15 STACKS

LOUVERED-FIN TYP

TURBO

3/3

6 POLES

OPERATION CONTROL

ROOM TEMP. CONTROL

AIR DIRECTION CONTROL

CONSTRUCTION

PROTECTOR COMPRESSOR

FAN MOTOR

POWER CORD

DRAIN SYSTEM

NET WEIGHT (lbs/kg)

OUTSIDE DIMENSION (inch)

(W x H x D) (mm)

WIRELESS REMOCN

THERMISTOR

VERTICAL LOUVER(RIGHT & LEFT)

HORIZONTAL LOUVER(UP & DOWN)

SLIDE IN-OUT CHASSIS

INTERNAL OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

3 WIRE WITH GROUNDING

CORD-CONNECTED TYPE(ATTATCHMENT PLUG:OPTION)

DRAIN PIPE OR SPLASHED BY FAN SLINGER

146/66

26 x 16 27/32 x 30 5/16

660 x 428 x770

7Room Air Conditioner

Service Manual 8

Installation

Installation

Select the Best Location

Installation Check

How to Secure the Drain Pipe

1.To prevent 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.

3.The outside of the cabinet must extend outward for at
least 30cm and there should be no obstacles, such as a
fence or wall, within 50cm from the back of the cabinet
because it will prevent heat radiation of the condenser.
Restriction of outside air will greatly reduce the cooling
efficiency of the air conditioner.

CAUTION: All side louvers of the cabinet

must remain exposed to the outside of
the structure.

4.Install the unit a little slanted so the back is slightly lower
than the front (about 10~15mm). This will help force con­densed water to the outside.

5.Install the unit from the bottom about 75~150cm above
the floor level.

The setting conditions must be checked prior to initial starting.
The following items are especially important checking points when the installation is finished.

1. Grounding wire (Green or Green and Yellow) is provided in the power cord. The green wire must be grounded.

2. Connect to a single-outlet 15A circuit.

(or 20A circuit for Electric Heater Model)

3. To avoid vibration or noise, make sure the air conditioner is installed securely.

4 Avoid placing furniture or draperies in front of the air inlet and outlet.

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.

Optional

1. Install the drain pan over the corner of the cabinet where you removed the
plug with 4 (or 2) screws.

2. Connect the drain hose to the outlet located at the bottom of the drain pan.
You can purchase the drain hose or tubing locally to satisfy your particular
needs. (Drain hose is not supplied).

3. Select the most appropriate connection from among the following figures (by
considering the hole of the unit) to fit drain pan to your own unit.

AWNING

COOLED AIR

HEAT

RADIATION

75~15cm

ABOUT 10~15mm

Over 50cm

FENCE

Drain pipe

Drain cap

Fig. 4

Fig. 3

Fig. 2

DRAIN
PAN

DRAIN HOSE

Fig. 1

CABINET

SCREW

Figure 1

9 Room Air Conditioner

Installation

Window Requirements

Installation Kits Contents

All supporting parts should be secured to firm

wood, masonry, or metal.

1. This unit is designed for installation in standard dou­ble hung windows with actual opening widths from
26" to 41".
The top and bottom window sashes must open suffi­ciently to allow a clear vertical opening of 18" from
the bottom of the upper sash to the window stool.

2. The stool offset (height between the stool and sill)
must be less than 1 1/4".

NOTICE

26" to 41"

18" min

Interior wall

(Without frame curtain)

Stool

26" min.

Offset
Less

than 1
Sill

Exterior

1

/4"

Left frame
curtain

Frame guide(2)

Window locking
bracket

bracket

Sill

(2)

Foam-PE
(Adhesive-Backed)

Support bracket(2)

Foam strip
(Plain-Back)

Foam-PE
(Adhesive-Backed)

Drain joint pipe

Right frame
curtain

Type A (14)

Type B (7)

Type C (5) Type D (2)

Carriage Bolt (2) Lock Nut (4)

Service Manual 10

Installation

Suggested Tool Requirements

PREPARATION OF CHASSIS

1. Remove the screws which fasten the cabinet at both
sides and at the back.

2. Slide the unit out from the cabinet by gripping the
base pan handle and pulling forward while bracing
the cabinet.

3. Cut the window sash seal to the proper 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 on the top of the cabinet
with 3 screws (Type A).

6. Insert the Frame guides into the bottom of the cabi­net.

7. Insert the Frame Curtain into the Top retainer bar
and Frame guides.

8. Fasten the curtains to the unit with 10 screws
(Type A) at both sides.

Figure 2

Figure 3

Figure 4

Figure 5

Shipping screws

Foam-PE

Top retainer bar

Top retainer bar

Foam-PE

Screw

(Type A)

Frame guide

Screw(Type A)

11 Room Air Conditioner

Installation

Cabinet Installation

1. Open the window. Mark a line on the center of the
window stool between the side window stop mold­ings.
Loosely attach the sill bracket to the support bracket
using the carriage bolt and the lock nut.

2. Attach the sill bracket to the window sill using the
screws (Type B).
Carefully place the cabinet on the window stool and
align the center mark on the bottom front with the
center line marked window stool.

3. Using the M-screw and the lock nut, attach the sup­port bracket to the cabinet track hole. Use the first
track hole after the sill bracket on the outer edge of
the window sill. Tighten the carriage bolt and the lock
nut. Be sure the cabinet slants outward.

CAUTION: 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.

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 stool.

2. The cabinet should be installed with a very slight tilt
downward toward the outside.

NOTICE

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Sill
Bracket

Carriage
Bolt
(M-Screw)

Cabinet
Track hole

Support
Bracket

Carriage bolt
and lock nut

Support
Bracket

Lock nut

Machine screw(Type D)
and lock nut

Outer edge
of window
sill

Screw(Type B)

Sill bracket

Top
retainer
bar

Window sash

Foam-PE

Cabinet

Frame curtain

Top retainer bar

Foam-PE

Window stool

Front angle

Sash track

Front Angle

Screw(Type B)

Service Manual 12

Installation

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. 11)

7. Slide the unit into the cabinet.(See Fig. 12)

CAUTION: For security purpose, rein-

stall screws(Type A) at cabinet's

sides.

8. Cut the Foam-strip to the proper length and insert
between the upper window sash and the lower win­dow sash.(See Fig. 13)

9. Attach the Window locking bracket with a screw
(Type C.) (See Fig. 14)

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.15)

11. Lift the inlet grille and secure it with a screw (Type

A) through the front grille.(See Fig. 15)

12. Window installation of room air conditioner is now

completed. See ELECTRICAL DATA for attaching
power cord to electrical outlet.

Power Cord

Screw (Type A)

Screw

Window locking
bracket

Foam-Strip

Screw(Type C)

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16