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

Disassembly and Reassembly
10
No. Part name Procedures Picture
Fan and motor 7. Seperate Bell mouth and Box Ass’y from
cushion drain.
8. Loosen the nut and separate the assy
holder fan.
9. Lift down carefully the Ass'y fan.
DB81-00206A(3)-1 3/28/02 5:42 PM Page 10

Disassembly and Reassembly
11
No. Part name Procedures Picture
Fan and motor 10.Separate the motor connector wire and
separate the wire holder fixed the bottom
floor.
11.Remove the screw fixed onto the bracket
wire fixed on the bottom of product and
remove screw fixed onto earth wire and
separate carefully the ass'y motor in from
the product after separation of nut of ass'y
motor in and grommet mount motor.
DB81-00206A(3)-1 3/28/02 5:42 PM Page 11

Disassembly and Reassembly
12
No. Part name Procedures Picture
$
Fan and motor
Method 2.
Pump ❈ Do
# -1, 2, 3 above.
1. For separation of Ass'y cushion drain from
the main body.
!Cabinet guide A (2EA)
@Cabinet guide B (1EA)
#Remove each cabinet power cord.
$
Remove the obstacles of pump drain
and ass'y sensor float wire due to the
movement of BKT wire.
DB81-00206A(3)-1 3/28/02 5:42 PM Page 12

Disassembly and Reassembly
13
No. Part name Procedures Picture
Pump 2. For the separation of ass'y cushion drain
form the main body, remove the fixing
screw of bracket at each corner of cushion
drain.
3. Take out the CAP drain socket inserted in
the ass'y drain cushion to remove the
condensate in the drain cushion.
* Care must be taken for the taking out
the condensate water.
4. Lift down carefully the Ass'y cushion drain
from the main body.
5. Loosen three screws fixing the pump
drain.
DB81-00206A(3)-1 3/28/02 5:43 PM Page 13

Disassembly and Reassembly
14
No. Part name Procedures Picture
%
Pump
Heat exchanger
6. Separate the hose drain inserted in the
outlet of pump drain.
7. Separate from the BKT pump the pump
drain separated from the main body from
the BKT pump.
❈ Do
$ -1 ~ $ -4
1. Separate the partition front evap fixing the
heat exchanger to the base of main body.
2. Separate the holder evap (2 EA) fixing the
heat exchanger to the base of main body.
DB81-00206A(3)-1 3/28/02 5:43 PM Page 14

Disassembly and Reassembly
15
No. Part name Procedures Picture
3. Separate holder guide evap (4 EA).
4. Lift up the heat exchanger from the main
body.
DB81-00206A(3)-1 3/28/02 5:43 PM Page 15

Disassembly and Reassembly
16
No. Part name Procedures Picture
^
Front panel
-Cover Front ❈ Do
! above.
Push 3 cover front fixing screws inside the
front panel and snap fixing part to separate
the cover front.
DB81-00206A(3)-1 3/28/02 5:43 PM Page 16

Disassembly and Reassembly
17
No. Part name Procedures Picture
&
Front panel
- Stepping Motor ❈ Do
! above.
1. Loosen each one of fixing screw at the
corner part,
! cushion side-A and cushion
side-B inside the front panel, and then lift
it up.
2. Remove
! the screw of housing motor
L/R fixed at the corner part of front panel
inside and separate @ Blade-H.
3.
! Separate the stepping motor from the
housing motor L/R and
@ separate the motor wire connected.
DB81-00206A(3)-1 3/28/02 5:43 PM Page 17

Disassembly and Reassembly
18
No. Part name Procedures Picture
*
(
Front panel
- Cushion-A
Front panel
- Bio-pure filter
(Optional)
❈ Do ! above.
Remove two screws fixing cushion-A inside
the front and lift it up.
❈ Do 1- ! , 1- @ and 1- # above.
1. Separate the bio pure filter from the filter
air.
(remove 4 fixingscrews)
2. Lift up the bio pure filter case to take the
filter out.
DB81-00206A(3)-1 3/28/02 5:43 PM Page 18

19
Disassembly and Reassembly
No. Part name Procedures Picture
!
@
Cabinet
Fan Motor
&
Propeller Fan
1) Turn off the unit and remove the power
cable.
2) Remove the top cover.
3) Remove the control box cover.
4) Unplug the ass'y cable.
5) Remove the cabi-side.
6) Remove the cabi-front.
* When you assemble the parts, check if the
each parts and electric connectors are
fixed firmly.
1) Do Procedure 1 above.
2) Remove the nut flange.
(Turn to the right to remove as it is a left
turned screw)
3) Disassemble the propeller fan.
■ Outdoor Unit (24K, 28K)
No. Part name Procedures Picture
!
@
Cabinet
Fan Motor
&
Propeller Fan
1) Turn off the unit and remove the power
cable.
2) Remove the top cover.
3) Remove the control box cover.
4) Unplug the ass'y cable.
5) Remove the cabi-side.
6) Remove the cabi-front.
* When you assemble the parts, check if the
each parts and electric connectors are
fixed firmly.
1) Do Procedure 1 above.
2) Remove the nut flange.
(Turn to the right to remove as it is a left
turned screw)
3) Disassemble the propeller fan.
■ Outdoor Unit (44K)
DB81-00206A(3)-1 3/28/02 5:43 PM Page 19