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

Disassembly and Reassembly
4
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
5
No. Part name Procedures Picture
@
Electronic part
7. Separate the front panel using two hooks
on the both sides of the indoor unit.
Do ! -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
yyy
Receiver
& Display
Unit
<*Optional>
Hook and Eye
DB81-00206A(3)-1 3/28/02 5:42 PM Page 5

Disassembly and Reassembly
6
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.
Do ! 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
7
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
8
No. Part name Procedures Picture
Fan and motor
Pump
DB81-00206A(3)-1 3/28/02 5:42 PM Page 8

Disassembly and Reassembly
9
No. Part name Procedures Picture
Pump
DB81-00206A(3)-1 3/28/02 5:42 PM Page 9