Trouble shooting 3 E12.3
INDOOR UNIT Error Method:
Number excess of device in Wired
remote contorller system (2 Wires RC)
Indicate or Display:
Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E.5 U.1
Error Code : 1 2
Detective Actuators:
Wired remote controller ( 2-Wire )
Indoor unit Controller PCB circuit
Detective details:
When the number of connecting Indoor unit and Remote controller in one
RCgroup exceeds more than 32 units.
Check Point 2 : Check Indoor unit controller PCB
The number of connecting indoor unit and Remote controller in one RCgroup were less than 32 units.
Forecast of Cause :
1. Wrong wiring of RCgroup 2. Indoor unit controller PCB failure
Check Point 1 : Wire installation Wrong RCgroup setting
Wrong wire connection in RCgroup (Please refer to the installation manual)
Change controller PCB and check the Error after setting remote controller address
Check if controller PCB damage
04-11
OK
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