Fujitsu ASG30LMTA Service Instruction page 46

Trouble shooting 10
INDOOR UNIT Error Method:
Indoor unit communication circuit
(WRC) error
Detective Actuators:
Wired remote controller ( 2-Wire )
Indoor unit Controller PCB circuit
Forecast of Cause : 1. Terminal connection abnormal 2. Wired remote controller failure
3. Indoor unit controller PCB defective
Check Point 1 : Check the connection of terminal
After turning off the power supply, 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
Check Point 2 , 3: Check Indoor unit controller PCB
Check terminal voltage of controller PCB connector CNC01 (Power supply for remote)
If DC12V, Remote control failure (Controller PCB is OK) >>> Replace Remote controller
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.
TIP setting the remote controller
Depending on the connected remote controller type, following setting is required:
Connected remote controller
2-wire-type wired remote controller is connected
3-wire-type wired remote controller is connected
2 wire remote controller PCB
If the communication PCB is not conncected, and JM9 is disconnected, 3A error is displyed.
If the communication PCB is conncected, and JM9 is connected, the 2 wire remote controller doesn't work.
If the DIP switch is 3 wire side, the 2 wire remote controller doesn't work.
3 wire remote controller PCB
If the DIP switch is 2 wire side, the 3 wire remote controller doesn't work.
AMP Air Conditioning
Indicate or Display:
Indoor Unit :
Operation lamp: 3 times Flash,
Timer lamp : 10 times Flash
Detective details:
When the indoor unit(s) detects the configuration of RCG abnormal or
the indoor unit detects lack of primarily -remote controller.
DIP switch Jumper (JM9)
2WIRE/3WIRE
(Disconnected)
(Factory setting)
(Connected)
2WIRE/3WIRE
02-13
Wired Remote Controller :
ERROR CODE : [E : 3A]
JM9
JM9
(Factory setting)
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