Trouble shooting 23
INDOOR UNIT
OUTDOOR UNIT Error Method:
Indicate or Display:
Refer to error code table.
Detective Actuators:
Detective details:
Forecast of Cause :
OKOK
Connected Indoor unit error
Outdoor Unit Main PCB Circuit
When the total capacity of the connected indoor units exceed
the connectable range of the total capacity.
1. The selection of connected indoor unit is incorrect 2.Main PCB failure
Check Point 1 : Check the total capacity of indoor unit
Check the total capacity of the connected indoor units.
02-30
>>If abnormal condition is found, correct it by referring
to Installation Manual or Data & Technical Manual.
Check Point 2 : Replace Main PCB
If Check Point 1 do not improve the symptom, change Main PCB.
Trouble shooting 24
INDOOR UNIT
OUTDOOR UNIT Error Method:
Indicate or Display:
Refer to error code table.
Detective Actuators:
Detective details:
Forecast of Cause :
Main CPU - Sub CPU
communication error
Outdoor Unit Main PCB Circuit
When it cannot receive an effective signal for 10sec between
the Main CPU and Sub CPU in outdoor unit.
1. Main PCB failure
Check Point 1 : Replace Main PCB
Change Main PCB.
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