Samsung AQV12A Series - Fault Diagnosis by Symptom; Communication Error (E101;E102)

4-6 Samsung Electronics
4-3 Fault Diagnosis by Symptom
4-3-1 Communication error When or is diplayed
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
Restart after power off.
Is the communication error
occurred again?
Isn't the power cable
and communication cable error?
Is it the outdoor
2 Micom(Inverter + Main) model?
Exchange the outdoor unit PCB.
Terminate the service.
Correct the wrong wiring.
Is the connection of
communication cable normal?
Correct the connection of
communication cable.
Exchange the indoor/outdoor unit PCB.
Yes
Yes
Yes
No
No
No
No