Trip Detection - Fujitsu Airstage J-II Service Manual

Trouble shooting 35
OUTDOOR UNIT Error Method:

Trip Detection

Detective Actuators:
Inverter PCB
Inverter Compressor
SV 2 coil
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)
4. SV2 Coil Abnormal
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 )
OK
Check Point 3 : Check the Inverter compressor
Check Inverter compressor
OK
Check Point 4: Check the SV2, Coil
Check the connector of SV2 connected on the Main PCB surely.
Check the Coil installed on the Valve surely ( Fixed condition, direction, depth)
Check the resistance of wires ( Not open circuit )
Check the valve are operating surely
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
(Refer to Service Parts Information )
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 94
04-45