Indoor/Outdoor Communication Error (1Min.) (Error Code : E202) - Samsung AC026RN1DKG Service Manual

Troubleshooting

4-3-9 Indoor/outdoor communication error (1min.) (Error Code : E202)

1. Test items
1) Check the communication wire and power wire connection.
2) Check the communication connector connection.
- CN31 of outdoor unit Main PCB.
3) Check the communication circuit on the PCB.
2. Check procedure
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?
Continue
4-32
Yes
Yes
Yes
Yes
No
End the service.
Check the communication wire and power wire
connection.
1. Are the communication wire connections correctly
No
assembled as F1 : Red, and F2 : Blue?
2. Is the communication wire between the indoor
unit and the 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
Reconnect the communication connector.
No
Replace the Main PCB of the outdoor unit.
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