Daikin RZQ100B8V3B Service Manual page 168

Troubleshooting
1
Troubleshooting
3 3
4
5
Caution
3–20
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?
[Power supply side]
YES
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
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
[Installation work side]
YES
YES
Continuous
slight noise of "shoo..."
during cooling or
defrosting
NO
NO
Sound of
"shoo..." generates
just after operation start
or stop, or defrosting
start or
stop.
NO
YES
Sound of
"shoo..." generates
during cooling or after
operation
stop.
YES
NO
Creak
during heating
and after operation
stop
YES
NO
∗ Excess charge of refrigerant
∗ Air intrudes into refrigerant
system
∗ Flushing noise due to
refrigerant shortage.
(Sound of shoo...)
ESIE05-03
Correction of installation
Reinforcement for ceilings or
walls
Insert shock absorber in
mounting section, or strengthen
the mounting section.
YES
Normal. The sound is flushing
noise of gas (refrigerant) inside
air conditioning unit
Insert cushion materials to the
pipe support such as saddle.
YES
Normal. The noise is a sound
generated at the time of gas
(refrigerant) flow change or stop
Disassemble and remove parts
contact.
YES
Normal. Operation sound of
draining device
Correct piping manually or
attach a dead weight to pipe
YES
Normal. Creak generates by
shrinkage of resin parts due to
temperature change.
Normal.
YES
After vacuum drying, charge
correct amount of refrigerant.
(S1997)
Part 3 – Troubleshooting