E
Eric CruzAug 25, 2025
How to fix Panasonic CS-S9NKV indoor/outdoor abnormal communication error?
- AAmy JohnsonAug 26, 2025
An abnormal communication error between the indoor and outdoor units of your Panasonic Air Conditioner can be caused by several factors. It could be due to a faulty indoor or outdoor unit PCB, so check both PCBs. There might be a signal transmission error due to wrong wiring; verify the wiring between the units. A break in the connection wires could also cause this, so inspect them for damage. Finally, a disturbed power supply waveform can lead to this issue, so review the power supply for stability.













