Argo AMG21SDT Dane techniczne i instrukcja serwisowa - Strona 14

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7-5 Fan works at one speed only

Check electrical conec-

tions. Is there continuity ?

YES

Check power supply

between 1-7(high) or

1-8(low) electronic control

contacts (CE)

YES

Check fan motor winding

values (MV)

YES

Replace fan motor (MV)

Is the unit cooling capacity

suitable for the room

thermal loads ?

YES

Are both air filters and heat

exchanger cleaned ?

YES

Check if Difference bet-

ween room air

temperature and outlet air

delivered is up to 10 °C

normal operations

foreseen for the

YES

Low

gas charge

Proceed with

above points

Fit electrical connec -

tions properly

Replace the electronic

control (CE)

Suggest a more power-

ful unit

Clean filters and / or

heat exchanger

The unit works properly