Panasonic WH-SXH09D0E8 Service Manual page 75

16.5.29 Outdoor Current Transformer Open Circuit (F46)
Malfunction Decision Conditions:
A current transformer (CT) open circuit is detected by checking the compressor running frequency ( rated
frequency) and CT detected input current (< 0.65A) for continuously 20 seconds.
Malfunction Caused:
1 CT defective.
2 Faulty outdoor unit PCB.
3 Compressor defective (low compression).
Abnormality Judgment:
Continue 3 times in 20 minutes.
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