Indoor/Outdoor Communication Error (2Min.) (Error Code : E202) - Samsung AC009BNLDCH Service Manual

4-4-9. Indoor/outdoor communication error (2min.) (Error Code : E202)

Outdoor Unit display
Wired remote Control, Wind Free RAC
Duct, 1way Cassette
Display
Duct
Blue Red
1way
Blue Yellow
X X
Judgment
Refer to checking method, as shown below
method
Symtom Communication error between the indoor and outdoor unit for two minutes
Power on 30 seconds after power off.
Does communication error occurs?
Are the power wire and communication
wire correctly connected?
Check the connection of
the communication connector (CN31) of the Main PCB.
1. Is the communication wire between the indoor unit and
the outdoor unit correctly connected?
2. Are the power wire (1(L), 2(N)) and the communication wire (F1, F2) correctly connected?
3. Are the power wire (1(L), 2(N)) correctly assembled?
(Refer to the electrical schematics and the power
failure as explained above.)
Check the communication
circuit of the Main PCB of the outdoor unit.
1. Is there a fault in communication IC?
2. Is there a fault in TVS-Diode?
Check the communication circuit of the Main PCB of the outdoor unit.
1. Is there a fault in communication IC?
2. Is there a fault in TVS-Diode?
Samsung Electronics
E202
E202
4way Cassette,
4way Cassette(600x600)
or or
or
◑ ◑ ◑ ◑
X X
Yes
Yes
Yes
Yes
MAX4
◑ ◑ ◑
X X X
No
End the service.
Check the communication wire and power wire connection.
1. Are the communication wire connections correctly assembled as
F1 : Red, and F2 : Blue?
2. Is the communication wire between the indoor unit and the
No
outdoor unit correctly connected?
3. Are the power connections (1(L), 2(N)) and the communication
connections (F1, F2) correctly connected?
4. Are the power wire [1(L), 2(N)] correctly assembled?
(Refer to the electrical schematics and the power failure as
explained above.)
No
communication connector.
No
Replace the Main PCB of the outdoor unit.
Troubleshooting
Console 360 Cassette
GRN ◑
◑
X X
Reconnect the
4-65