Trouble Shooting With Error Code; Check The Connection Of Terminal; Check Remote And Controller Pcb - Fujitsu Airstage VR-II Series Service Manual

4-2-9 TROUBLE SHOOTING WITH ERROR CODE

Trouble shooting 1
INDOOR UNIT Error Method:
Wired Remote Controller
Communication Error
Detective Actuators:
Indoor unit controller PCB circuit
Wired Remote Control (3 wire / 2 Wire type)
Forecast of Cause : 1. Terminal connection abnormal 2. Wired Remote Control failure 3. Controller PCB failure
Check Point 1 : Check the connection of terminal
After turning off the power, check & correct the followings.
Indoor Unit - Check the connection of terminal between remote control and Indoor unit, or between Indoor units, and
check if there is a disconnection or short of the cable.
OK
Check Point 2 : Check Remote and Controller PCB
Check terminal voltage of
If DC12V, Remote Control failure (C
If DC0V, Controller PCB failure (Remote is OK) >>> Replace Controller PCB
In case of re-installation is done due to removed connector or incorrect -
wiring, turn on the power again.
Indicate or Display:
E12.1
Outdoor Unit : E.5 U.1
Indoor Unit
Error Code
Detective details:
Upon receiving the signal more than 1 time from Wired Remote or other Indoor
unit, but the same signal has not been received more than 1 minute (3 Wire
type). 2.5 minute (2 Wire type)
controller
PCB Connector CNC01. (Power supply for Remote)
ontroller
PCB is OK) >>> Replace Remote controller
: Operation LED 1 times Flash, Timer LED 2 Times Flash,
Filter LED Continuous Flash. < 1 2 >
: 1 2
04-10
DC