En-16
TROUBLESHOOTING
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:
WARNING
Symptom
Cause
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 protection circuit will operate for about 3 minutes, pre-
venting 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 oc-
casional. This sound is produced by the Automatic Defrosting
operation.
17
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.
17
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 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 set-
ting.
—
●
During Heating operation, the indoor unit will temporarily
stop operation (Max. 15 minutes) as the Automatic Defrosting
mode operates. During Automatic Defrosting operation, the
OPERATION Indicator Lamp will
fl
ash.
17
●
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.
7
●
During SUPER QUIET operation, the fan will operate at very
low speed.
6
●
When the outdoor unit is stopped, the indoor unit's fan may
stop from time to time in cooling operation.
7
●
In the monitor of AUTO operation, the fan will operate at very
low speed.
7
●
In case of Multi-type unit, if multiple units are operated in
different operation modes as shown below, the units oper-
ated 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
18
Water is produced from the
outdoor unit:
●
During Heating operation, water may be produced from the
outdoor unit due to Automatic Defrosting operation.
17
9315345516_OM.indb 16
9315345516_OM.indb 16
9/27/2012 1:52:25 PM
9/27/2012 1:52:25 PM
