York HP Series Service Manual page 113

16.4.14. J2 Malfunction
Malfunction conditions
Possible causes
When the compressor discharge temperature (T5) is more
than 115℃ for 10 seconds, the compressor will stop
restart until T5 is less than 90℃.
● Refrigerant leakage
● Wiring mistake
● Faulty discharge temperature sensor
● Faulty outdoor PCB
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and not