Philips WH-UD16CE5-A-1 Service Manual page 108

Air-to-water hweatpump
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17.5.3 Indoor Refrigerant Liquid Temperature Sensor Abnormality (H23)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the indoor refrigerant liquid
temperature sensor are used to determine sensor error.
Malfunction Caused:
1
Faulty connector connection.
2
Faulty sensor.
3
Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
108

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