Trouble shooting 14 OUTDOOR UNIT Error Method:

Trip detection

Indicate or Display:

Refer to error code table.

Detective Actuators:

Outdoor unit Main PCB Compressor

Detective details:

When more than normal operating current to IPM in Main PCB flows, the compressor stops.

After the compressor restarts, if the same operation is repeated within 40sec, the compressor stops again.

If and repeats 5 times, the compressor stops permanently.

Forecast of Cause :

1.

Defective connection of electric components 2. Outdoor heat exchanger clogged 3. Compressor failure

4.

Main PCB failure

Check Point 1 : 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 2 : Check Heat exchanger

Is there anything obstructing the air distribution circuit?

Is there any clogging of Outdoor Heat Exchanger?

OK

Check Point 3 : Check Compressor

Check Compressor. (PARTS INFORMATION 2)

OK

Check Point 4 : Replace Main PCB

If Check Point 1 ~ 3 do not improve the symptom, change Main PCB.

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Image 39
Fujitsu ASU12RL2 Outdoor unit Main PCB Compressor, Check Point 2 Check Heat exchanger, Check Point 3 Check Compressor