Fujitsu ARTG30LHTA Service Instruction page 22

Trouble shooting 16
OUTDOOR UNIT Error Method:
Heat Sink Thermistor Error
Detective Actuators:
Inverter PCB
Forecast of Cause :
1. Inverter PCB failure
If this error is displayed, replace Inverter PCB
Indicate or Display:
Refer to error code table.
Detective details:
Heat sink temperature thermistor (Built-in IPM) open/short detected
02-19