Trip Detection - Fujitsu Airstage V-II Service Manual

Trouble shooting 46
OUTDOOR UNIT Error Method:

Trip Detection

Detective Actuators:
Inverter PCB
Forecast of Cause :
1. Outdoor unit fan operation defective, foreign matter on hear exchanger, excessive rise of ambient
2. Inverter PCB defective
3. Inverter compressor defective (lock, winding short)
Check Point 1 : Check the outdoor unit fan operation, heat exchanger, ambient temperature
No obstructions in air passages?
Heat exchange fins clogged
Outdoor unit fan motor check
Ambient temperature not raised by the effect of other heat sources?
Discharged air not sucked in?
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. 94. 1
Indoor Unit
Error Code
Detective details:
"Protection stop by "overcurrent generation after inverter compressor start
processing completed'''' generated consecutively 5 times.
* The number of generations is reset if protection stop is not generated again
within 40 seconds after restarting.
temperature
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 94
04-54