Table of Contents
Trouble shooting 23
Outdoor Unit - No Power
Check Point 1 : Check installation condition
Isn't the breaker down?
Check loose or removed connection cable.
>> If abnormal condition is found, correct it by referring to
Installation Manual or Data & Technical Manual.
OK
Check Point 2 : Check external cause at indoor unit and outdoor unit(Voltage drop or noise)
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
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.
OK
OK
Check Point 3 : Check electrical components
Check the voltage of power supply.
>> Check if AC198(AC220V-10%) - 264V(AC240V+10%) appears
at outdoor unit terminal L - N.
OK
Check Fuse(F201) on terminal board.
>> If Fuse is open, check loose terminal, and replace Fuse.
Check Varistor on Main PCB (VA1 - 2).
>> If Varistor is defective, there is a possibility of an abnormal power supply.
Check the correct power voltage.
OK
If Check Point 1 ~ 3 do not improve the symptom, replace Main PCB,
Forecast of Cause:
1. Power supply failure
3. Electrical components defective
the power supply circuit.
2. External cause
02-25
NO
Table of Contents
Troubleshooting
