En-17
TROUBLESHOOTING
WARNING
Before requesting service, perform the following checks:
Symptom Problem
See Page
NORMAL
FUNCTION
Doesn’t operate immedi-
ately:
●
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.
●
Whenever the electrical breaker is turned off than on again or the
power supply plug is disconnected and then reconnected, the pro-
tection circuit will operate for about 3 minutes, preventing unit op-
eration during that period.
—
Noise is heard:
●
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).
●
During operation, a slight squeaking sound may be heard. This is
the result of minute expansion and contraction of the front panel
due to temperature changes.
—
●
During Heating operation, a sizzling sound may be heard occasion-
al. This sound is produced by the Automatic Defrosting operation.
18
Smells:
●
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 indoor unit.
—
Mist or steam is emitted:
●
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 indoor unit, resulting in condensation
and misting.
—
●
During Heating operation, the outdoor unit’s fan may stop, and
steam may be seen rising from the unit. This is due to Automatic
Defrosting operation.
18
Airfl ow is weak or stops:
●
When Heating operation is started, fan speed is temporarily very
low, to allow internal parts to warm up.
●
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 for a higher setting.
—
●
During Heating operation, the unit will temporarily stop operation
(between 7 and 15 minutes) as the Automatic Defrosting mode
operates. During Automatic Defrosting operation, the OPERATION
Indicator Lamp will fl ash.
18
●
During Dry mode, the indoor unit will operate at low speed; in order
to adjust room humidity, the indoor unit’s fan may stop from time to
time. Also, the fan may operate at very low speed when adjusting
room humidity.
—
●
The fan may operate at very low speed during Dry operation or
when the unit is monitoring the room’s temperature.
19
●
During SUPER QUIET operation, the fan will operate at very low
speed.
7 - 8
●
During SUPER QUIET operation, the fan will operate at very low
speed.
7
●
In the monitor of AUTO operation, the fan will operate at very low
speed.
8
●
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 the OPERATION indicator lamp (green) will fl ash.
Heating mode and cooling mode (or dry mode)
Heating mode and fan mode
19
Water is produced from the
outdoor unit:
●
During Heating operation, water may be produced from the out-
door unit due to Automatic Defrosting operation.
18
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the electrical
breaker or disconnect the power supply plug, and consult authorized service personnel.
Merely turning off the unit’s power switch will not completely disconnect the unit from the power
source. Always be sure to turn off the electrical breaker or disconnect the power supply plug to en-
sure that power is completely off.
9378532045_OM.indb 179378532045_OM.indb 17 9/28/2011 4:21:46 PM9/28/2011 4:21:46 PM
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