Panasonic CS-YE18NKV-6 Service Manual page 54

15.5.5 H16 (Outdoor Current Transformer Open Circuit)
Malfunction Decision Conditions

A current transformer (CT) is detected by checking the compressor running frequency (≥ rated frequency) and
CT detected input current (less than 1.14A) for continuously 20 seconds.
Malfunction Caused

CT defective

Outdoor PCB defective

Compressor defective (low compression)
Troubleshooting
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