York HP Series Service Manual page 110

16.4.11 Outdoor IPM module temperature sensor malfunction diagnosis and solution (P7)
Error Code
Malfunction conditions
Potential causes
Trouble shooting:
P7
If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED
displays a failure.
Wiring mistake
●
Faulty sensor
●
Faulty PCB
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