Samsung ACH2400C User manual

AIR CONDITIONER CONTENTS

1. Installation

2. Disassembly and Reassembly

3. Troubleshooting

4. Exploded Views and Parts List

5. Refrigerating Cycle Block Diagrams

6. Wiring Diagrams

7. Schematic Diagrams

SERVICE Manual

CASSETTE TYPE AIR CONDITIONER

(Cool and Heat)

ACH2400C

ACH2800C

ACC2400C

ACC2800C

ACC4400C

Type ICH2400C

ICH2800C

ICC2400C

ICC2800C

ICC4400C

Indoor Unit UCH2400C

UCH2800C

UCC2400C

UCC2800C

UCC4400C

Outdoor Unit IFS095G05

Panel

E DB81-00206A(3)

DB81-00206A(3) 3/28/02 5:40 PM Page 2

1. Installation

1-1 Refrigerant Refill Procedure

• Refill an air-conditioner with refrigerant when refrigerant has been leaked at installing or using.

R-22

Suspension hook

High

pressure

gauge

Hand

wheel

Finger tight

fittings

Connected to

high pressure

side

Charging

line

For mounting

other and of

hose when

not in use

Compound

gauge

1. Purge air(for new installation only).

3. Connect the tank to refill with Refrigerant

4. Set the unit to cool operation mode.

7. Stop operation of the air conditioner.

9. Close the cap of each valve.

2. Turn the 3-way valve clockwise to close, connect the

pressure gauge(low pressure side) to the service valve,

and open the 3-way valve again.

5. Check the pressure indicated by the pressure

gauge(low pressure side).

* Standard pressure is should be 64~78psi in a regular,

high operation mode.

6. Open the refrigerant tank and fill with refrigerant until

the rated pressure is reached.

* It is recommended not to pour the refrigerant in too

quickly, but gradually while operating a pressure valve.

8. Close the 3-way valve, disconnect the pressure gauge,

and open the 3-way valve again.

DB81-00206A(3)-1 3/28/02 5:41 PM Page 1

1-2 “Pump down” Procedure

Relocation of the air conditioner

• Refer to this procedure when the unit is

relocated.

1. Carry out the pump down procedure

(refer to the details of 'pump down').

2. Remove the power cord.

3. Disconnect the assembly cable from the

indoor and outdoor units.

4. Remove the flare nut connecting the

indoor unit and the pipe.

At this time, cover the pipe of the indoor

unit and the other pipe using a cap or

vinyl plug to avoid foreign material

entering.

5. Disconnect the pipe connected to the

outdoor unit.

At this time, cover the valve of the

outdoor unit and the other pipe using a

cap or vinyl plug to avoid foreign material

entering.

6. Make sure you do not bend the connection

pipes in the middle and store together

with the cables.

7. Move the indoor and outdoor units to a

new locatioon.

8. Remove the mounting plate for the indoor

unit and move it to a new location.

Pump down shall be carried out when an evaporator is replaced or when the unit is relocated in another

area.

1. Remove the caps from the two 3-way valves.

3. Set the unit to cool operation mode.

(Check if the compressor is operating.)

5. When the pressure gauge indicates "0" turn the 3-way

valve(Low pressure side) clockwise to close.

4. Turn the 3-way valve(High pressure side) clockwise to close.

6. Stop operation of the air conditioner.

7. Close the cap of each valve.

2. Turn the 3-way valve clockwise to close and connect

a pressure gauge(low pressure side) to the service valve,

and open the 3-way valve again.

3-Way Valve (High pressure)

3-Way Valve (Low pressure)

DB81-00206A(3)-1 3/28/02 5:41 PM Page 2

2. Disassembly and Reassembly

Stop operation of the air conditioner and remove the power cord before repairing the unit.

■ Indoor Unit

No. Part name Procedures Picture

Front Grille & Filter 1. Open the front grille by pushing the tabs

on the grille.

IMPORTANT

You must give attention when disassembling

the front grille and must check the safety clips

have been installed. If you don't ensure them,

the front grille will drop suddenly and you will

be hurt.

2. Remove the front grille.

2-1. Remove the safety clips.

2-2. Open the front grille about 45˚ and

pull it forward.

3. Pull out the filter air.

;;;

yyy

Safety Clip

DB81-00206A(3)-1 3/28/02 5:41 PM Page 3

Disassembly and Reassembly

No. Part name Procedures Picture

4. Slowly loosen the four bolts holding the

panel to the assembly.

5. Open the electrical component box cover

removing the screws. (3EA)

6. Disconnect the two cables between the

assembly and the panel.

- Stepping motor connectors.

6-1. Disconnect the three cables between

the assembly and the panel.

- Stepping motor connector

- Receiver & Display unit connector

(Optional)

Eye

Front panel fixing holes

Front Panel

DB81-00206A(3)-1 3/28/02 5:42 PM Page 4

Disassembly and Reassembly

No. Part name Procedures Picture

Electronic part

7. Separate the front panel using two hooks

on the both sides of the indoor unit.

-1,

-2,

-3 and

-4 above.

1. Remove the screws(6EA) on the electrical

component box and remove the cover

plates.

2. Open the control box.

;;;

yyy

Receiver

& Display

Unit

<*Optional>

Hook and Eye

DB81-00206A(3)-1 3/28/02 5:42 PM Page 5

Disassembly and Reassembly

No. Part name Procedures Picture

Method 1

Fan and motor

3. Disconnect the other end of the cable to

the outdoor unit through the ceiling & the

hole on the wall between the control box

and the assembly.

above.

1. Disconnect FAN MOTOR wire connector,

thermistor wire connector,

drain pump wire connector.

2. Disconnect wire connects to capacitor.

DB81-00206A(3)-1 3/28/02 5:42 PM Page 6

Disassembly and Reassembly

No. Part name Procedures Picture

Fan and motor 3. Disconnect float switch wire connected to

terminal board (F1, F2).

4. Disconnect all connectors connected to

PCB.

5. Remove PCB’s from assy case PCB.

6. Remove the screws(9EA) for disconnection

of Bell mouth and cushion drain.

DB81-00206A(3)-1 3/28/02 5:42 PM Page 7

Disassembly and Reassembly

No. Part name Procedures Picture

Fan and motor

Pump

DB81-00206A(3)-1 3/28/02 5:42 PM Page 8

Disassembly and Reassembly

No. Part name Procedures Picture

Pump

DB81-00206A(3)-1 3/28/02 5:42 PM Page 9

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