English
11
9-7
WHITE MIST COMES OUT OF A UNIT
Indoor unit
•
When humidity is high during cooling opera-
tion.
If the interior of an indoor unit is extremely con-
taminated, the temperature distribution inside a
room becomes uneven. (*2) It is necessary to
clean the interior of the indoor unit. Ask your
Daikin dealer for details on cleaning the unit. This
operation requires a qualified service person.
•
Immediately after the cooling operation stops
and if the room temperature and humidity are
low.
This is because warm refrigerant gas flows back
into the indoor unit and generates steam.
9-8
NOISE OF AIR CONDITIONERS
Indoor unit
•
A “zeen” sound is heard immediately after the
power supply is turned on.
The electronic expansion valve inside an indoor
unit starts working and makes the noise. (*3) Its
volume will reduce in about one minute.
•
A continuous low “shah” sound is heard when
the system is in cooling operation or at a stop.
When the drain pump (optional accessories) is in
operation, this noise is heard.
•
A “pishi-pishi” squeaking sound is heard
when the system is in heating operation and at
a stop.
Expansion and contraction of plastic parts caused
by temperature change make this noise.
•
A low “sah”, “choro-choro” sound is heard
while the indoor unit is stopped.
When the other indoor unit is in operation, this
noise is heard. In order to prevent oil and refriger-
ant from remaining in the system, a small amount
of refrigerant is kept flowing.
Outside unit
•
When the tone of operating noise changes.
This noise is caused by the change of frequency.
Indoor unit, outside unit
•
A continuous low hissing sound is heard
when the system is in cooling or heating oper-
ation.
This is the sound of refrigerant gas flowing
through both indoor unit and outside unit.
•
A hissing sound which is heard at the start or
immediately after stopping operation.
This is the noise of refrigerant gas caused by flow
stop or flow change.
9-9
DUST COMES OUT OF THE UNIT
•
When the unit is used after stopping for a long
time.
This is because dust attached inside the indoor
unit spouts out.
9-10 THE UNITS CAN GIVE OFF ODOURS
•
During operation.
The unit can absorb the smell of rooms, furniture,
cigarettes, etc., and then emit it again. (*2)
It is necessary to clean the interior of the indoor
unit. Ask your Daikin dealer for details on cleaning
the unit. This operation requires a qualified ser-
vice person.
9-11 THE DISPLAY SHOWS
“
”
•
This is the case immediately after the main
power supply switch is turned on.
This means that the remote controller is in normal
condition. This continues for one minute at maxi-
mum.
9-12 THE UNIT DOES NOT STOP
•
JUST AFTER THE OPERATION STOPS
This is to prevent oil and refrigerant from remain-
ing in the outside unit.
The unit will stop after 5 to 10 minutes.
9-13 THE COMPRESSOR IN THE OUTSIDE
UNIT DOESN’T STOP
•
JUST AFTER THE OPERATION STOPS
This is to prevent oil and refrigerant from remain-
ing in the outside unit.
The unit will stop after 5 to 10 minutes.
9-14 THE UNIT IS WARM
•
WHEN THE UNIT STOPS
This is because the crankcase heater is warming
the compressor so that the compressor can start
smoothly.
9-15 HOT AIR IS EMITTED EVEN THOUGH
THE UNIT IS STOPPED
•
Hot air can be felt when the unit is stopped.
Several different indoor units are being run on the
same system, so if another unit is running, some
refrigerant will still flow through the stopping unit.
9-16 DOES NOT COOL VERY WELL
•
Program dry operation.
Program dry operation is designed to lower the
room temperature as little as possible.
Refer to page 7.
*1 The VRV-W
III
Series performs air condition-
ing by using a heat transfer with the cold water
sent from the boiler or solar panel system.
This is the cold water being spoken about.
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