The following are normal conditions for the unit
UNIT DOES NOT OPERATE
The unit will not operate just after being
turned off, or the mode being changed.
This is to protect the mechanism. Wait 3
minutes for the unit to function.
WARM AIR DOESN’T COME OUT
The unit is preheating or de-icing.
ODORS
A peculiar odor exuded by the carpet or
furniture might be emitted from the unit.
LOW NOISE
The soft, swishing noise is the sound
of the refrigerant flowing inside the
unit.
WATER VAPOUR
l In the COOL and DRY operation,
water vapour can sometimes be
seen at the air outlet due to the
difference in temperature between
the room air and the outlet air.
l In the HEAT operation, water va-
pour might come out of the outdoor
unit during de-icing.
If the unit appears to be malfunctioning, check the following points before calling for
service.
I
IF THE UNIT FAILS TO OPERATE
Check to see if the circuit breaker has tripped or the fuse has blown.
IF THE UNIT FAILS TO COOL OR HEAT THE ROOM EFFECTIVELY
1
Check the filters. If
they’re dirty, clean them.
Make sure windows and
doors are closed tightly.
Check the outdoor unit to
make sure nothing is
blocking the air inlet or
outlet.
A large number of people
in the room can prevent
the desired temperature
from being reached.
Check that the remote
control is set properly.
4
Check whether any
heat-generating appli-
ances are operating in
the room.
I
IF THE UNIT FAILS TO RECEIVE THE REMOTE CONTROL SIGNAL
Check whether the re-
mote control batteries
have become old and
weak.
Try to send the signal
again with the remote
control pointed properly
towards the unit’s receiver
window.
Check whether the re-
mote control batteries
are installed with the
polarities properly
aligned.
14
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