Fujitsu AOU09RL2, ASU12RL2 Trouble shooting 13 OUTDOOR UNIT Error Method, Current sensor error

Trouble shooting 13 OUTDOOR UNIT Error Method:

Current sensor error

Indicate or Display:

Refer to error code table.

Detective Actuators:

Outdoor unit Main PCB

Detective details:

When Input Current Sensor has detected 0A, while Inverter Compressor is operating at higher than 56rps, after 1minute upon starting the Compressor. (Except during the defrost operation)

Forecast of Cause :
1. Defective connection of electric components	2. External cause	3. Main PCB failure

Check Point 1-1 : Reset Power Supply and operate

Does Error indication show again?

YES

NO

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.

OK

Check Point 1-2 :

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.

Check Point 4 : Replace Main PCB

If Check Point 1, 2 do not improve the symptom, change Main PCB.

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