Air Conditioner Makes Big Noise And Vibration - Daikin E Series Service Manual

SiBE04-624
2.5

Air conditioner makes big noise and vibration.

Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
[Installation]
[Unit]
Service Diagnosis
Piping length is too short
Mounting wall is too thin
Insufficient vibration prevention measures
Deformation of the unit
Improper quantity of refrigerant
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Does the
wall vibrate or chatter?
NO
Does the
installation plate vibrate or
chatter?
NO
Is the piping secured
and fixed?
YES
Does the
fan contact with
other parts?
NO
Does the
piping contact with
the casing?
NO
Is it passing
sound heard from the pressure
reducing valve?
NO
· Overfilling of refrigerant
· Air mixed in
· Flushing sound due to refrigerant
shortage
YES
YES
NO
YES
YES
YES
Troubleshooting
Modify installation
conditions (reinforce the
wall, install outdoor rubber
cushion).
Change installation place.
Put cushion material on the
installation plate.
Secure it by using saddles
and inserting a cushion
material.
Correct them.
Correct by hand, or install
piping weight.
Apply sound insulation
sheets of putty.
Conduct vacuum drying, fill
the refrigerant of specified
volume
(R3403)
147