Daikin RKXYQ5T7Y1B Installation And Operation Manual page 31

14.2.10 Symptom: Noise of air conditioners
(Indoor unit, compressor unit, heat
exchanger unit)
▪ A continuous low hissing sound is heard when the system is in
cooling or defrost operation. This is the sound of refrigerant gas
flowing through the compressor unit, heat exchanger unit and
indoor units.
▪ A hissing sound which is heard at the start or immediately after
stopping operation or defrost operation. This is the noise of
refrigerant caused by flow stop or flow change.
14.2.11 Symptom: Noise of air conditioners
(compressor unit, heat exchanger unit)
When the tone of operating noise changes. This noise is caused by
the change of frequency from the compressor or the fans.
14.2.12 Symptom: Dust comes out of the heat
exchanger unit
When the unit is used for the first time in a long time. This is
because dust has gotten into the heat exchanger unit.
14.2.13 Symptom: The units can give off odours
The unit can absorb the smell of rooms, furniture, cigarettes, etc.,
and then emit it again.
14.2.14 Symptom: The heat exchanger unit fan
does not spin
During operation. The speed of the fan is controlled in order to
optimise product operation.
14.2.15 Symptom: The display shows "88"
This is the case immediately after the main power supply switch is
turned on and means that the user interface is in normal condition.
This continues for one minute.
14.2.16 Symptom: The compressor in the
compressor unit does not stop after a
short heating operation
This is to prevent refrigerant from remaining in the compressor. The
unit will stop after 5 to 10 minutes.
14.2.17 Symptom: The inside of an compressor
unit is warm even when the unit has
stopped
This is because the crankcase heater is warming the compressor so
that the compressor can start smoothly.
14.2.18 Symptom: Hot air can be felt when the
indoor unit is stopped
Several different indoor units are being run on the same system.
When another unit is running, some refrigerant will still flow through
the unit.
15 Relocation
Contact your dealer for removing and reinstalling the total unit.
Moving units requires technical expertise.
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
16 Disposal
This unit uses hydrofluorocarbon. Contact your dealer when
discarding this unit. It is required by law to collect, transport and
discard the refrigerant in accordance with the "hydrofluorocarbon
collection and destruction" regulations.
15 Relocation
Installation and operation manual
31