Samsung AS09HPB - Communication Error

Troubleshooting
12-15Samsung Electronics
12-2-13 Communication error
1. Checklist :
1) Is the communication cable between the indoor unit and outdoor unit connected correctly?
2) Isn't the power cable and communication cable error?
2. Troubleshooting procedure
Yes
Yes
Yes
Yes
Restart after power off.
Terminate the service.
No
Is the communication error
occurred again?
Correct the wrong wiring.
No
Isn't the power cable
and communication cable error?
Correct the connection of
communication cable.
No
Is the connection of
communication cable normal?
Exchange the indoor/outdoor unit PCB.
No
Exchange the outdoor unit PCB.
Is it the outdoor
2 Micom(Inverter + Main) model?
24437A(1)_1 1/16/05 9:58 PM Page 12-15