Fault Code Lookup

HVAC Sales Master
12
Inverter Heat Sink Sensor Failure
This code typically points to
  • Failed heat sink thermistor
  • Open or shorted sensor wiring

Next checks to confirm
  1. Ohm heat sink sensor
  2. Inspect sensor wiring

Escalation
Failed sensor requires inverter service.
Reset behavior
Manual reset via J4 Test pins.
Service Soon
Schedule repair
Source
iQ Drive Table 7