Check Point 3 : Replace Main PCB
YES
NO
OK
Check Point 2 : Check connections of Outdoor Unit
Electrical Components
Check if the terminal connection is loose.
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
>> Upon correcting the removed connector or
mis-wiring, reset the power.
Check Point 1-2 :
Check external cause at Indoor and Outdoor
(Voltage drop or Noise)
1. Defective connection of electric components 2. External cause 3. Main PCB failure
Instant drop : Check if there is a large load electric
apparatus in the same circuit.
Momentary power failure : Check if there is a defective
contact or leak current in the
power supply circuit.
Noise : Check if there is any equipment causing harmonic
wave near electric line.(Neon bulb or electric
equipment that may cause harmonic wave)
Check the complete insulation of grounding.
Check Point 1-1 : Reset Power Supply and operate
Does Error indication show again?
02-21
Outdoor Unit Main PCB Circuit
Outdoor Unit Filter PCB Circuit
(Input current sensor unit)
When Input Current Sensor has detected 0A, while Inverter
Compressor is operating at higher than 56Hz, after 1minute upon
starting the Compressor. (Except during the defrost operation)
Trouble shooting 17
OUTDOOR UNIT Error Method:
Detective Actuators: Detective details:
Indicate or Display:
Refer to error code table.
CT error
If Check Point 1, 2 do not improve the symptom,
change Main PCB.
Forecast of Cause:
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