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TROUBLESHOOTING
The following conditions are not breakdowns or operation failures.
Symptom
Doesn't operate immediately:
Airfl ow is weak or stops:
Flashing lamps:
(Limited to only when receiver
unit is connected)
Noise is heard:
Smells:
Fog comes out of the indoor unit:
Steam comes out of the indoor
unit:
Water is produced from the
outdoor unit:
En-3
●
If the 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, preventing unit operation during that period.
●
When Heating operation is started, indoor unit's fan may temporarily stop, 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's fan will stop. If you wish to warm the room further, set the ther-
mostat for a higher setting.
●
During oil recovery operation, the air fl ow may stop for approximately 10 minutes.
●
During Heating operation, the unit will temporarily stop operation (between 4 and 15 minutes) as
the Automatic Defrosting mode operates.
●
The fan may operate at low speed during Dry operation or when the unit is monitoring the room's
temperature.
●
In the monitor AUTO operation, the fan will operate at low speed.
The OPERATION indicator lamp
(green) fl ashes:
The OPERATION indicator lamp
(green) fl ashes:
The OPERATION indicator lamp
(green) and TIMER indicator lamp
(orange) are fl ashing alternately:
The OPERATION indicator lamp
(green) and TIMER indicator lamp
(orange) are fl ashing
simultaneously:
The OPERATION indicator lamp
(green) lights up and the TIMER
indicator lamp (orange) fl ashes:
●
In the following conditions there are sounds of water fl owing from the indoor unit and the operation
sound becomes loud. These are the sounds of the fl owing of refrigerant.
When operation starts
When oil recovery operation fi nishes
When automatic defrosting operation fi nishes
●
During operation, a slight squeaking sound may be heard. This is the result of minute expansion
and contraction of the panel due to temperature changes.
●
During Heating operation, a sizzling sound may be heard occasionally. This sound is produced by
the Automatic Defrosting operation.
●
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.
●
During Cooling 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.
●
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.
●
During Heating operation, water may be produced from the outdoor unit due to the Automatic
Defrosting operation.
Problem
An oil recovery operation is being performed.
An automatic defrosting operation is being per formed.
It has recovered from a power outage.
It is operating in trial operation mode.
Ask a manager as there may be maintenance being conducted.
This is the standby state.
See page
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