Argoclima AE522SC3 Manuel de service télécharger pdf (Page 53)

51

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

•Measure resistance of compres-

sor motor winding.

YES

Clean heat exchanger or remove

obstacles.

Is outdoor heat exchanger coil dirty

or are there obstacles near air suc-

tion inlet?

•Check compressor motor over-

current relay (51C).

•Check power supply voltage. Is

voltage abnormally low?

•Check compressor.

There is a possibility of locked

rotor.

Is temperature of compressor

abnormally high?

Refrigerant gas shortage.

Charge refrigerant gas.

YES

YES

NO

It’s operated

NO

90% or more of

rated voltage

R22 or R407C.

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