Service Instruction

Trouble shooting 10-2
INDOOR UNIT
OUTDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators:
Detective details:
Forecast of Cause :
OKOK
OKOK
Active filter error
Outdoor unit Main PCB
Active filter module
1. External cause 2. Connector connection failure 3. Main PCB failure 4. Active filter module 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 4 : Replace Main PCB
If Check Point 1 - 3 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.
02-15
OKOK
Check Point 3 : Check Active filter module
For AOU15RLFFH
Check Active filter module. (PARTS INFORMATION 6)
>>If Active filter module is abnormal, replace it.
When inverter input DC voltage is higher than 425V or
lower than 80V.
When a momentary power cut off occurred on low voltage
Refer to error code table.