Trouble shooting 12
INDOOR UNIT Error Method:
Indoor unit Communication circuit
(wired remote controller) error
Detective Actuators:
Indoor unit Controller PCB circuit
Detective details:
OK
Detect the communication error of microcomputer and communication PCB.
Check Point 2 : Replace the communication PCB
OK
Forecast of Cause :
1.Communication PCB defective 2. Indoor unit controller PCB defective
Check Point 1 : Check the connection of terminal
Indoor unit - Check the connection the communication PCB and the controller PCB
After turning off the power supply, check & correct the followings
If the Check point 1 is ok, replace the communication PCB
Indicate or Display:
Error code : 3A
02-13
Check Point 3 : Replace the controller PCB
If condition is doesn’t change, replace the controller PCB
Outdoor unit : No indication
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