Daikin RXTA30B2V1B, Service Manual

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3 | Troubleshooting
Service manual
44
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
Check Detail
Check the installation conditions
(specified in the installation manual). ▪ Does the installed model has
sufficient capacity?
▪ Is there a short circuit air flow caused
by insufficient installation space?
Check the outdoor temperature. ▪ Heating operation cannot be used
when the outdoor temperature is
18°C WB or higher.
▪ Cooling operation cannot be used
when the outdoor temperature is
below −10°C DB.
3.6.4 Operating noise and vibrations
Check Detail
Check the installation conditions
(specified in the installation manual). ▪ Use general vibration prevention
where needed.
▪ If the mounting wall is too thin, you
must use cushion material or rubber,
or change the installation place.
▪ Refrigerant piping is too short; is the
length within specified range?
▪ Due to bad installation or general
conditions there may be deformation
of the unit.
▪ Are all the screws installed and
tightened properly?
▪ Is all piping secured, fixed and
supported by inserting a cushion
material where needed?
▪ Install piping weights or correct by
hand if any piping is in contact with
other parts.
▪ Is the fan in contact with other parts?
If so separate the fan from the other
parts.
Check refrigerant charge. ▪ Is the unit filled with the specified
refrigerant volume?
▪ Is there a flushing noise, due to
refrigerant shortage?
▪ Is there air in the system?
Check the expansion valve. If a passing sound is heard from the
pressure reducing valve, apply sound
insulation sheets of putty to reduce the
valve noise.