Fujitsu AUXB04GALH Service Manual page 131

Trouble shooting 53
OUTDOOR UNIT Error Method:
Inverter Compressor Start UP Error
Detective Actuators:
Inverter PCB
Inverter Compressor
Forecast of Cause :
1. Inverter PCB to inverter compressor wiring disconnection, open
2. Inverter PCB defective
3. Inverter compressor defective (lock, winding short)
Check Point 1 : Check the Inverter PCB to inverter compressor connection state
Wiring connection state check
Cable open check
OK
Check Point 2 : Check the Inverter PCB
Inverter PCB check (Refer to "Service Parts Information 4" )
OK
Check Point 3 : Check the Inverter compressor
Inverter compressor check (Refer to "Service Parts Information 1,2" )
Indicate or Display:
E. 93.1
Outdoor Unit : E. 93. 1
Indoor Unit
Error Code
Detective details:
"Protection stop by "overcurrent generation at inverter compressor starting"
restart" generated consecutively 60 times x 2 sets (total 120 times)
* The shortest time up to error generation is about 100 minutes
* Restart is not performed if an indoor unit in the same refrigerant system is
not turned ON by thermostat.
* After the end of the 1st set, the 2nd set is not started if all the compressors in
the same refrigerant system are not temporarily stopped.
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 93
04-61