En-13
TROUBLESHOOTING
WARNING
In following events, immediately stop operation of the air conditioner, and disconnect all the power
supply by turning off the electrical breaker or disconnecting the power plug. Then consult your dealer
or authorized service personnel.
As long as the unit is connected to the power supply, it is not insulated from the power supply even if
the unit is turned off.
• Unit smells of something burning or emits smoke
• Water leaks from the unit
Before requesting service, perform the following checks:
Symptom
Problem
See Page
NORMAL
FUNCTION
Does not operate immedi-
ately:
l
If the unit is stopped and then immediately started again, the com-
pressor will not operate for about 3 minutes, in order to prevent
fuse blowouts.
l
Whenever the electrical breaker is turned off then on again, the
protection circuit will operate for about 3 minutes, preventing unit
operation during that period.
—
Noise is heard:
l
During operation and immediately after stopping the unit, the sound
of water
fl
owing in the air conditioner’s piping may be heard. Also,
noise may be particularly noticeable for about 2 to 3 minutes after
starting operation (sound of coolant
fl
owing).
—
*
l
During heating operation, a sizzling sound may be heard
occasionally. This sound is produced by the automatic defrosting
operation.
15
Smells:
l
Some smell may be emitted from the indoor unit. This smell is the
result of room smells (furniture, tobacco, etc.) which have been
taken into the air conditioner.
—
Mist or steam are emitted:
l
During cooling or dry operation, a thin mist may be seen emitted
from the indoor unit. This results from the sudden cooling of room air
by the air emitted from the air conditioner, resulting in condensation
and misting.
—
*
l
During heating operation, the outdoor unit’s fan may stop, and
steam may be seen rising from the unit. This is due to the automatic
defrosting operation.
15
Air
fl
ow is weak or stops:
*
l
When heating operation is started, fan speed is temporarily very low,
to allow internal parts to warm up.
*
l
During heating operation, if the room temperature rises above the
thermostat setting, the outdoor unit will stop, and the indoor unit will
operate at very low fan speed. If you wish to warm the room further,
set the thermostat to a higher setting.
—
*
l
During heating operation, the unit will temporarily stop operation
(between 4 and 15 minutes) as the automatic defrosting mode oper-
ates. During the automatic defrosting operation,
will be shown
on the remote controller display.
15
l
The fan may operate at very low speed during dry operation or when
the unit is monitoring the room’s temperature.
—
l
In case of multi-type unit, if multiple units are operated in different
operation modes as shown below, the units operated afterward will
stop and
will be shown on the remote controller display of the
stopped indoor units.
• Heating mode and cooling mode (or dry mode)
• Heating mode and fan mode
17
l
During QUIET operation, the fan will operate at very low speed.
—
l
In the monitor AUTO operation, the fan will operate at very low speed.
—
Water is produced from the
outdoor unit:
*
l
During heating operation, water may be produced from the outdoor
unit due to the automatic defrosting operation.
15
The FILTER indicator
blinks:
l
Clean the
fi
lter. Afterwards, turn the FILTER indicator off.
12
thermo sensor display
on the remote controller is
fl
ashing:
l
The room temperature sensor may be malfunctioning. Please con-
sult authorized service personnel.
—
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
