En-13
TROUBLESHOOTING
WARNING
• In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the electrical breaker 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 to ensure that power is completely off.
Before requesting service, perform the following checks:
Symptom
Problem
See Page
NORMAL
FUNCTION
Doesn’t operate immedi-
ately:
●
If the indoor unit is stopped and then immediately started again, the
compressor will not operate for about 3 minutes, in order to prevent
fuse blowouts.
●
Whenever the electrical breaker is turned off then on again the protec-
tion circuit will operate for about 3 minutes, preventing unit operation
during that period.
—
Noise is heard:
●
During operation or 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 refrigerant
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 occasional.
This sound is produced by the Automatic Defrosting operation.
14
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 cool 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.
14
Air
fl
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
temperature 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 temperature for a higher setting.
—
●
During Heating operation, the indoor unit will temporarily stop opera-
tion (between 7 and 15 minutes) as the Automatic Defrosting mode
operates. During Automatic Defrosting operation, the OPERATION
Indicator Lamp will
fl
ash.
14
●
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.
6
●
During SUPER QUIET operation, the fan will operate at very low
speed.
5
●
In the monitor of AUTO operation, the fan will operate at very low
speed.
6
●
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
15
Water is produced from
the outdoor unit:
●
During Heating operation, water may be produced from the outdoor
unit due to Automatic Defrosting operation.
14
9374136131-02_OM.indb 13
9374136131-02_OM.indb 13
24/9/2553 15:18:47
24/9/2553 15:18:47
