Trouble Shooting With Error Code; Communication Error (Indoor Unit Remote Control) - Fujitsu AB*A30LBT Service Instruction

7-2 TROUBLE SHOOTING WITH ERROR CODE

Trouble shooting 1
INDOOR UNIT Error Method:
Communication Error
(Indoor unit Remote control)
Detective Actuators:
Indoor unit controller PCB circuit
Wired Remote Control
Forecast of Cause:
1. Terminal connection abnormal
Check Point 1 : Check the connection of terminal
After turning off the power, check & correct the followings.
Check the connection of terminal between remote control and Indoor unit,
and check if there is a disconnection of the cable.
OK OK
Check Point 2 : Check Remote Control and Controller PCB
Check Voltage at CN14 (terminal 1-3) of Controller PCB.
(Power supply to Remote Control)
>> If it is DC12V, Remote Control is failure. (Controller PCB is normal)
>> If it is DC 0V, Controller PCB is failure.
Upon correcting the removed connector or mis-wiring, reset the power.
Indicate or Display:
Indoor Unit : Operation LED: OFF, Timer LED: 8 times blink,
Filter LED
Outdoor Unit : No indication
ERROR CODE : E : 00
Detective details:
When the indoor unit cannot receive the signal from Wired Remote
more than 10seconds after power ON, or the indoor unit cannot receive
the signal more than 1minute during normal operation.
2. Wired Remote Control failure
(Check Remote Control once again) >> Replace Controller PCB
07-05
: OFF
3. Controller PCB failure
>> Replace Remote Control