Maxon MXI 09HC001, Service Manual

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Noise from
indoor unit
Collision sound
of the machine
Flowing sound
of the liquid
Sound of the
running fan motor
Sound of plastic
pieces rubbing or
deforming
Oscillation
sound
Sound of running
fan motor
Vane imbalance or distortion.
Sound made by
cooling operation
Refrigerant circulation or vane distortion.
Sound of running
compressor
Something wrong with the compressor, such as
oil shortage, valve slice distortion.
Noisy
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.
Noise from
Outdoor unit
Collision sound
of the machine
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.
The whole unit resonates thedoor and window.
Sound made by
compressor or motor
The compressor or motor makes abnormal noise.
Condensed water is attached to the vane.
Vane imbalance or distortion.
Resonance sound
Collision sound of the
machine
Flowing sound of
condensed water
Sound of running fan
motor
Noise from
the whole
unit
The unit does not match with the installation kit
very well
Collision of the pipeline, fixing screws loose or
plastic pieces deform.
FAULT DIAGNOSIS BY SYMPTOM
15