Daikin R71FUV1 Service Manual page 57

Si20-701_B
Troubleshooting
Caution
Does
the noise
generate with
vibration of whole
ceilings and
walls?
NO
Does
the noise
generate with vibration
of unit mounting
section?
NO
Is the
piping secured?
YES
[Power supply side]
Does
the fan contact
with other parts?
NO
Does the
pipe contact with
casing?
NO
Is the
noise flushing
sound from pressure
reducing valve or
capillary
tube?
NO
A
50
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
[Installation work side]
YES
YES
NO
YES
YES
YES
Symptom-based Troubleshooting
Correction of
installation.
Reinforcement
for ceilings or
walls
Insert shock
absorber in
mounting
section, or
strengthen the
mounting
section.
Insert cushion
materials to the
pipe support
such as saddle.
Disassemble and
remove parts
contact.
Correct piping
manually or
attach a dead
weight to pipe.
Normal.