Vivax ACP-09CH25ZNM Service Manual page 17

FAULT DIAGNOSIS BY SYMPTOM
Noisy
Noise from
indoor unit
Noise from
Outdoor unit
Noise from
the whole
unit
Collision sound
of the machine
Flowing sound
of the liquid
Sound of the
running fan motor
Sound of plastic
pieces rubbing or
deforming
Collision sound
of the machine
Oscillation
sound
Sound of running
fan motor
Sound made by
cooling operation
Sound of running
compressor
Resonance sound
Collision sound of the
machine
Sound made by
compressor or motor
Flowing sound of
condensed water
Sound of running fan
motor
Fixing bolts somewhere may loose or rub, some
spare parts may not match very well.
Refrigerant circulation or pressure change of
refrigerant while switch on/off.
Vane imbalance or distortion, rupture; loose
screw of vane.
Plastic pieces deform due to expansion when
hot and shrink when cold. Or some spare parts
may not match very well.
Collision of the pipeline, fixing screws loose or
deform caused by rubbing.
Inappropriate installation method; the unit
does not match with the installation kit very well
or the compressor quivers acutely.
Vane imbalance or distortion.
Refrigerant circulation or vane distortion.
Something wrong with the compressor, such as
oil shortage, valve slice distortion.
The unit does not match with the installation kit
very well
The whole unit resonates thedoor and window.
Collision of the pipeline, fixing screws loose or
plastic pieces deform.
The compressor or motor makes abnormal noise.
Condensed water is attached to the vane.
Vane imbalance or distortion.
15