Trouble shooting 10
INDOOR UNIT Error Method:
Detective Actuators: Detective details:
Forecast of Cause:
OK
Indicate or Display:
Refer to error code table.
YESYES
NO
OK
Power Supply Frequency
Detection Error
Indoor Unit Controller PCB
1. Connection failure 2. External cause 3. Controller PCB failure
Check Point 1-1 : Reset the power supply and operate
Does error indication reappear?
Check Point 2 : Check connection
Check any loose or removed connection line of
between indoor unit and outdoor unit.
>> If there is an abnormal condition, correct it by
referring to Installation Manual or Data &
Technical Manual.
Check connection condition in control unit.
(If there is loose connector, open cable or mis-wiring.)
Check Point 3 : Check the voltage of power supply
Check the voltage of power supply
>> Check if AC198(AC220V-10%) - 264V(AC240V+10%) appears
at outdoor unit terminal L - N.
When power frequency is not detected by 4 seconds after power-on.
02-12
Check Point 4 : Replace Controller PCB
If Check Point 1 ~ 3 do not improve the symptom, replace Controller PCB.
Check Point 1-2 : Check external cause such as noise
Check if the ground connection is proper.
Check if there is any equipment that causes harmonic wave
near the power cable (Neon light bulb or any electronic
equipment which causes harmonic wave).
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