Argoclima AE522SC3 Manual de servicio descargar pdf (Pagina 45)

b) Three-phase systems 400V - 3N - 50 Hz

Rewire power supply wires.

Check negative phase relay (47C)

to see if it has operated.

Check magnetic contactor. (MG)

Check thermal relay (51C) to see if

it has operated.

Check power supply voltage.

Voltage is abnormally low.

Contact power utility company to

have power voltage restored to

normal

Check compressor.

There is a possibility of locked

rotor.

90% or more of

rated voltage.

YES

O.K.

Check compressor motor internal

protector. (49C)

Temperature of compressor is

abnormally high.

Refrigerant gas shortage.

Compressor is defective.

YES

Charge refrigerant gas.(R22

or R407C

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Argoclima AE522SC3 Manual de servicio Pagina 45