En-7
TROUBLESHOOTING
The following conditions are not breakdowns or operation failures.
Symptom
Doesn’t operate immedia-
tely:
Airflow is weak or stops:
Flashing lamps:
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:
Problem
● 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 thermostat for a higher setting.
● During oil recovery operation, the air flow 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 moni-
toring the room’s temperature.
● In the monitor AUTO operation, the fan will operate at low speed.
The OPERATION indicator lamp
(red) flashes:
The OPERATION indicator lamp
(red) flashes:
The OPERATION indicator lamp
(red) and TIMER indicator lamp
(green) are flashing alternately:
The OPERATION indicator lamp
(red) and TIMER indicator lamp
(green) are flashing
simultaneously:
The OPERATION indicator lamp
(red) lights up and the TIMER
indicator lamp (green) flashes:
● In the following conditions there are sounds of water flowing from the indoor unit
and the operation sound becomes loud. These are the sounds of the flowing of
refrigerant.
When operation starts
When oil recovery operation finishes
When automatic defrosting operation finishes
● 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.
See page
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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.
9369313028_OM_en.p65 29/8/06, 15:467
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