Troubleshooting 9
OUTDOOR UNIT Error Method:
Detective actuators:
Detective details:
Forecast of cause :
OK
OK
OK
OK
PFC circuit error
Outdoor unit main PCB
1. External cause
2. Connector connection failure
3. Main PCB failure
Check Point 2 : Check connection of Connector
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 3 : Replace Main PCB
If Check Point 1, 2 do not improve the symptom, change main PCB.
Check Point 1 : Check external cause at Indoor and Outdoor (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 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.
02-13
When inverter output DC voltage is higher than 415V for over 3 seconds,
the compressor stops.
If the same operation is repeated 5 times, the compressor stops permanently.
