Fujitsu AUXB04GALH Service Manual page 113

Trouble shooting 35
OUTDOOR UNIT Error Method:
Inverter Communication Error
Detective Actuators:
Outdoor unit Main PCB
Outdoor unit Inverter PCB
Forecast of Cause : 1. Noise 2. Main to Inverter PCBs wiring connection defective
3. Main PCB defective 4. Inverter PCB defective
Check Point 1-1 : Turn the power
on again.
Error displayed again?
YES
Check Point 2 : Check the main to Inverter PCB wiring
Connector connection state check
Cable open check
OK
Check Point 3 : Check Main PCB
Chack Main PCB. (Refer to "Sarvise Parts Information 3,4" )
OK
Check Point 4 : Replace Inverter PCB
Replace Inverter PCB.
E. 62. 6
Indicate or Display:
Outdoor Unit : E. 62. 6
Indoor Unit
Error Code
Detective details:
Communication not received from Inverter PCB for 10 seconds or more
Check Point 1-2 : Noise
NO
Check if ground is connection correctly or there are no related cables near the
power line.
04-43
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 62