Inverter Compressor Start Up Error - Fujitsu Airstage V-II Service Manual

Trouble shooting 45
OUTDOOR UNIT Error Method:

Inverter Compressor Start UP Error

Detective Actuators:
Inverter PCB
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 5)
OK
Check Point 3 : Replace the Inverter compressor
Inverter compressor replacement
After fixing the problem and for canceling the Error, Error Reset (F3-40) will be required after power reset
Indicate or Display:
Outdoor Unit : E. 93. 1
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Error Code : 93
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.
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