owner’s manual
6
Symptom 2: System switches to Fan
Mode during Cooling Mode
Symptom 3: White mist comes out of a Unit
Symptom 4: Noise of Air Conditioners cooling
In order to prevent indoor evaporator frosting, the system will
switch to fan mode automatically, and will restore back to
cooling mode shortly after.
When the room temperature drops to the set temperature, the
compressor goes off, and the indoor unit changes to fan mode.
When the temperature rises up, the compressor starts again. It
works the same way in heating mode.
Symptom 3.1: Indoor Unit
Symptom 3.2: Indoor Unit, Outdoor Unit
Symptom 4.1: Indoor Unit
When humidity is high during a cooling operation, and if the
interior of an indoor unit is extremely dirtied, the temperature
distribution inside a room becomes uneven. It is necessary to
clean the interior of the indoor unit. Ask your dealer for details
on cleaning the unit. This operation requires qualified service
personnel.
When the system is switched over to a heating operation after a
defrosting operation, any moisture generated by defrosting
becomes steam, and is emitted outward.
A continuous and low hissing sound is heard when the system
is in a cooling operation, or at a stop.
When the drain pump (optional accessory) is in operation, this
noise is also heard.
A "pss-pss" squeaking sound is heard when the system stops
after completion of a heating operation.
Expansion and contraction of plastic parts caused by
temperature changes also make this noise.
Symptom 4.2: Indoor Unit, Outdoor Unit
A continuous low hissing noise is heard when the system is in
operation.
This is the sound of refrigerant gas flowing through both the
indoor and outdoor units.
A hissing sound is heard at the start, or immediately after,
stopping operation, or beginning a defrosting operation.
This is the noise of refrigerant, caused by flow stoppage or flow
change.
Symptom 4.3: Outdoor Unit
When the tone of operating noise changes.
This noise is caused by a change of frequency.
Symptom 5: Dust comes out of the Unit
Symptom 6: The Unit gives off strange odors
When the unit is used for the first time in a long time.
This is most likely due to dust having gotten inside the unit.
The unit can absorb the smell of rooms, furniture, cigarettes,
etc., and then emit it again.
Symptom 7: The Outdoor Unit fan does not
spin.
During operation, the speed of the fan is controlled in order to
optimize product operation.
The operation lamp is flashing rapidly (~5Hz) and the lamp
continues flashing rapidly after turning off the power and turning
it on again. (Refer to Table 9-1)
Remote controller starts malfunctioingn or the buttons do not
work well.
A safety device, such as a fuse or breaker, frequently actuates.
Obstacles and/or water enter the unit.
Water leaks out of the indoor unit.
Any other strange, concerning malfunctions.
8. TROUBLESHOOTING
If one of the following malfunctions occur, cease operation,
shut off the power, and contact your dealer.
If the system does not properly operate, except when the above
mentioned cases or the above mentioned malfunctions is
evident, investigate the system according to the following
procedures.
(Refer to Table 9-2).
9.1. Malfunctions of the Air Conditioner
