Fujitsu AU*A12LALN Service Instruction page 123

8-5-2 Switching Remote Control Unit Signal Codes
Confirm the setting of the remote control unit signal code and the printed circuit board setting.
If these are not confirmed, the remote control unit can not be used to operate for the air conditioner.
Jumper wire
JM1
Connect
Connect
Disconnect
Connect
Connect
Disconnect
Disconnect
Disconnect
Remote control unit
Signal code
JM2
A (Primary setting)
b
c
d
08-14