Fujitsu AUXB04GALH Service Manual page 137

Troubleshooting 59
OUTDOOR UNIT Error Method:
Outdoor Unit Fan Motor Driver 1(2)
Abnormal
Detective Actuators:
Driver PCB
Fan motor
Main PCB
Forecast of Cause : 1. Driver PCB defective
4. Lose connection or disconnecting wire
Check Point 1 : Check the wiring connection
Check Fan motor to Driver PCB wiring connector disconnection, open
Check Driver PCB to Capacitor wiring connector disconnection, open
Check Main PCB to Driver PCB wiring connector disconnection, open
OK
Check Point 2 : Replace Driver PCB
Check the appearance and condition of mounting of Driver PCB.
Change Driver PCB and release the error.
Check if the error reoccurs on a test run.
OK
Check Point 3 : Replace Fan motor
Check the winding resistance of Fan motor.
Change Fan motor and check if the error reoccurs on a test run.
Indicate or Display:
E. 97.9 (E. 98.9)
Outdoor Unit : E. 9 7. 9 ( E. 9 8. 9 )
Indoor Unit
Error Code
Detective details:
When Driver PCB detects the following abnormalities,
the error signal is output.
Driver PCB defective
Fan motor defective (Layer short)
Main PCB defective (DC output abnormal)
Lose connection or disconnecting wire
2. Fan motor defective
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 9 U / 9 7 ( 98 )
3. Main PCB defective
04-67