Fault Code Lookup

HVAC Sales Master
T972_O
Compressor Discharge Temp High
This code typically points to
  • High compressor discharge temperature

Next checks to confirm
  1. Same discharge-temperature protection family — inverter reduces RPM at 235°F and repeats if needed

Escalation
Follow requirement M1HPC-SR-81
Reset behavior
Per protection requirement and fault recurrence.
Urgent
Fix now
Source
Rheem RP18AZ Installation Instructions Table 15 and discharge-temperature protection section