Daikin VRV EMERION RXYQ-AATJA, Руководство по обслуживанию, Страница: 234 / 429

Symptom-based Troubleshooting SiUS342303E
227 Part 6 Service Diagnosis
6 COOL/HEAT
selection is
disabled.
The remote controller displays
CENTRAL CONTROL.
This remote controller has no option
to select cooling operation.
Use a remote controller with option to
select cooling operation.
The remote controller displays
CENTRAL CONTROL, and the
COOL/HEAT selection remote
controller is provided.
COOL/HEAT selection is made using
the COOL/HEAT selection remote
controller.
Use the COOL/HEAT selection
remote controller to select cool or
heat.
7 The system
conducts fan
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.
The remote controller displays
CENTRAL CONTROL; no
cooling or heating operation is
performed. Switch to fan
operation.
In thermal storage operation, the unit
is set to fan operation in cooling or
heating operation, and the remote
controller shows CENTRAL
CONTROL.
Normal operation.
8 The airflow rate is
not reproduced
according to the
setting.
Even pressing the airflow rate
setting 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 fan LL
operation so that no one gets cold air.
Furthermore, if fan operation mode is
selected when other indoor unit is in
heating operation, the system will be
brought to fan LL 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 stopping, the indoor
air temperature and humidity
are low.
Hot gas (refrigerant) that has flowed
in the indoor unit results to be vapor
from the unit.
Normal operation.
Indoor and outdoor units
After the completion of defrost
operation, the system is
switched to heating operation.
Defrosted moisture turns to be vapor
and comes out from the units.
Normal operation.
Symptom Supposed Cause Countermeasure