Zanussi ZS12V70CCHI, Service Manual

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8.8
Noisy Operation Solution Flow Chart
• Noisy operation may vary, independently from the product, depending on the environmental conditions, mounting conditions or the
noise perception of the consumer.
Therefore, the first and most important thing to do in noisy operation complaints is to exactly
identify the noise or complaint.
Try to identify the noise formation following the flow chart below.
• If you cannot identify, appropriately film a video and inform the Service Center. (Video should be filmed at least 1 meter away from
the product, and there should not be any other noise other than the cause of the complaint.)
Compressor Noise
Which unit does the noise come from?
Indoor Unit Outdoor Unit
Does the noise go away when the fan
speed changes?
Are the outdoor unit blocks attached?
Detachment increases noise formation.
YES
NO
Does the noise go away when the
compressor speed changes?
Check the cross fan and fan
beds. If noise increases in
turbo mode, it is the noise of
air blowing. This is normal.
In back-to-back mounting, outdoor
unit noise may reach the indoor unit.
If possible, attach the products onto
different walls.
If the outdoor unit is in the balcony,
on the floor, it increases the noise. If
possible, mount it onto the wall.
Does the noise go away when the
compressor speed changes?
YES
Check if there are contact/friction of two different
components in a different manner than what
should mechanically be, etc. If necessary, block
contact with isolations like sponge
Is the frequency of the noise between 30-40 Hz.?
YES
Check if blocks and butyls are in place, which
should be attached onto the 4-way. If they are in
place, wrap butyl on the compressor battery.
NO
NO
Detect which frequency range the
noise forms in and inform the Service
Center about the issue.
Check the side, top and bottom
felts. Make sure that the felt covers
the compressor completely and also
covers the 4-way.
Check if there is deformation in the
pipes.