Panasonic WH-SXH09D0E8 Service Manual page 67

Air-to-water heatpump indoor unit outdoor unit
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16.5.21 Outdoor High Pressure Switch Abnormal (F27)
Malfunction Decision Conditions:
During compressor stop, and outdoor high pressure switch is remain opened.
Malfunction Caused:
1
Faulty connector connection.
2
Faulty switch.
3
Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue for 1 minute.
67

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