Fujitsu AB*G30LRTE series, Service Instruction

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Trouble shooting 10
OUTDOOR UNIT Error Method:
A.F Voltage Error
02-12
Indicate or Display:
Refer to error code table.
Detective Actuators: Detective details:
Forecast of Cause :
OK OK
OK OK
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.
When inverter input DC voltage is higher than 425V or
lower than 80V.
When a momentary power cut off occurred on low voltage