Inverter Error - Fujitsu ASU18RLF Service Instructions Manual

Trouble shooting 17
OUTDOOR UNIT Error Method:

Inverter Error

Detective Actuators:
Inverter PCB
Forecast of Cause:
1. External cause
3. Filter PCB failure 4. Inverter PCB failure
Test 1-1 : Turn the power on again?
・
Error displayed again?
YES
Test 2 : Check the wiring (Power supply to Filter PCB to Inverter PCB)
Connector and wiring connection state check
Cable open check
OK
Test 3 : Replace Inverter PCB
If Test 1,2 do not improve the symptom, replace Inverter PCB(Outdoor unit),
and execute the check operation again.
OK
Test 4 : Replace Main PCB
If Test 3 do not improve the symptom, replace Main PCB(Outdoor unit),
and execute the check operation again.
OK
Test 5 : Replace Filter PCB
If Test 4 do not improve the symptom, replace Filter PCB(Outdoor unit).
(SERVICE PARTS INFORMATION 10)
Indicate of Display:
Indoor Unit
Operation lamp : 6 time Flash
Timer lamp
ERROR CODE : [E : 63]
Detective details:
Error information received from Inverter PCB
2. Power supply to Filter PCB to Inverter PCB wiring disconnection, open
02-22
Outdoor Unit
A
: 3 time Flash
6
: Light ON
Test 1-2 : External cause
NO
Check if temporary voltage drop was not generated.
Check if temporary open was not generated.
Check if ground is connected correctly or
there are no related cables near the power line.
Monitor
B C D E F
3
: Light OFF n : n time blinking