Compressor 2 Error - Fujitsu Airstage V-II Service Manual

Trouble shooting 43
OUTDOOR UNIT Error Method:

Compressor 2 Error

Detective Actuators:
Current sensor 2 (for constant speed
compressor)
Forecast of Cause :
1. Main PCB to magnetic relay (for constant speed compressor) wiring disconnection, open
2. Compressor power supply system wiring disconnection, open (terminal to magnetic Relay
3. Magnetic Relay (for constant speed compressor) defective
4. Current sensor 2 (current sensor for constant speed compressor) to Main PCB wiring disconnection,
5. Current sensor 2 (current sensor for constant speed compressor) defective
6. Main PCB defective
7. Compressor 2 defective (winding open, protector operated)
Check Point 1 : Check the wiring connection state (main PCB to magnetic Relay (for
constant speed compressor))
Connector and wiring connection state check
Cable open check
OK
Check Point 2 : Compressor Power supply system (terminal to magnetic Relay (for constant
speed compressor) to constant speed compressor) wiring connection state
Wiring connection state check
Cable open check
OK
Check Point 3 : Check Magnetic Relay (for constant speed compressor)
Magnetic relay (for constant speed compressor) operation check
(Refer to "Sarvise Parts Information 13")
OK
Check Point 4 : Check the wiring connection state (current sensor 2 (current sensor
for constant speed compressor) to Main PCB
Connector and wiring connection state check
Cable open check
OK
Check Point 5 : Check the current sensor 2 (current sensor for constant speed compressor)
Current sensor 2 (current sensor for constant speed compressor) check
(Refer to "Service Parts Information 7")
OK
Check Point 6 : Main PCB check
Chack Main PCB. (Refer to "Sarvise Parts Information 4")
>>If replace Main PCB, Refer to 06-03 page Main PCB removal.
OK
Check Point 7 : Replace compressor 2
Compressor 2 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. 92. 1
Indoor Unit
Error Code
Detective details:
"Protection stop by "current sensor value
during compressor ON command"" generated 2 times
for constant speed compressor) to constant speed compressor)
open
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 92
04-51
0.1A continued for within 5 hours