Daikin VRV II RXYQ8MY1K, Руководство по обслуживанию, Страница: 148 / 310

Si39-502A Symptom-based Troubleshooting
Troubleshooting 137
Symptom Supposed Cause Countermeasure
7 The system
conducts air
blasting
operation but not
cooling or
heating
operation. This symptom occurs
immediately after turning ON
the power supply. The system is in preparation
mode of operation. Wait for a period of approximately
10 minutes.
8 The airflow rate
is not
reproduced
according to the
setting. Even pressing the AIRFLOW
RATE SET button makes no
changes in the airflow rate. In heating operation, when the
room temperature reaches the set
degree, the outdoor unit will stop
while the indoor unit is brought to
breezing operation so that no one
gets cold air.
Furthermore, if blasting mode is
selected when other indoor unit is
in heating operation, the system
will be brought to breezing
operation.
(The breezing operation is also
enabled while in oil return mode in
cooling operation.) Normal operation.
9 The airflow
direction is not
reproduced
according to the
setting. The airflow direction is not
corresponding to that
displayed on the remote
controller.
The flap does not swing. Automatic control Normal operation.
10 A white mist
comes out from
the system.
<Indoor unit>
In cooling operation, the
ambient humidity is high.
(This indoor unit is installed in
a place with much oil or dust.) Uneven temperature distribution
due to heavy stain of the inside of
the indoor unit Clean the inside of the indoor unit.
<Indoor unit>
Immediately after cooling
operation, the ambient
temperature and humidity are
low. Hot gas (refrigerant) flown in the
indoor unit results in humidity. Normal operation.
<Indoor and outdoor units>
After the completion of
defrosting operation, the
system is switched to heating
operation. Defrosted moisture turns to be
vapor and comes out from the
units. Normal operation.
11 The system
produces
sounds.
<Indoor unit>
Immediately after turning ON
the power supply, indoor unit
produces "ringing" sounds. These are operating sounds of
the electronic expansion valve of
the indoor unit. Normal operation.
This sound becomes low after a
lapse of approximately one
minute.
<Indoor and outdoor units>
"Hissing" sounds are
continuously produced while in
cooling or defrosting operation. These sounds are produced from
gas (refrigerant) flowing
respectively through the indoor
and outdoor units. Normal operation.
<Indoor and outdoor units>
"Hissing" sounds are produced
immediately after the startup or
stop of the system, or the
startup or stop of defrosting
operation. These sounds are produced
when the gas (refrigerant) stops
or changes flowing. Normal operation.
<Indoor unit>
Faint sounds are continuously
produced while in cooling
operation or after stopping the
operation. These sounds are produced from
the drain discharge device in
operation. Normal operation.
<Indoor unit>
"Creaking" sounds are
produced while in heating
operation or after stopping the
operation. These sounds are produced from
resin parts expanding and
contracting with temperature
changes. Normal operation.
<Indoor unit>
Sounds like "trickling" or the
like are produced from indoor
units in the stopped state. On multi-unit systems, these
sounds are produced from other
indoor units in operation. The
reason is that the system runs in
order to prevent oil or refrigerant
from dwelling. Normal operation.
<Outdoor unit>
Pitch of operating sounds
changes. The reason is that the compressor
changes the operating frequency. Normal operation.