Panasonic CS-RE18PKR Service Manual page 76

15.5.5 H16 (Outdoor Current Transformer)
Malfunction Decision Conditions

An input current, detected by Current Transformer CT, is below threshold value when the compressor is
operating at certain frequency value for 3 minutes.
Malfunction Caused

Lack of gas.

Broken CT (current transformer).

Broken Outdoor PCB.
Troubleshooting
76