Fujitsu ABYG-LRTA Series Manuale operativo - Pagina 15
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TROUBLESHOOTING
Instructions relating to heating (*) are applicable only to Heating and Cooling model (Reverse Cycle).
WARNING
Before requesting service, perform the following checks:
Normal function
Does not operate imme-
diately:
Noise is heard:
Smells:
Mist or steam are
emitted:
Airfl ow is weak or stops:
Water is produced from the
outdoor unit:
The Economy indicator
lamp is blinking:
In following events, immediately stop operation of the air conditioner, and disconnect all the power
supply by turning off the electrical breaker or disconnecting the power plug. Then consult your
dealer or authorized service personnel.
As long as the unit is connected to the power supply, it is not insulated from the power supply
even if the unit is turned off .
• Unit smells of something burning or emits smoke
• Water leaks from the unit
Symptom
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 power supply plug is disconnected and then
●
reconnected to a power outlet, the protection circuit will operate
for about 3 minutes, preventing unit operation during that
period.
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 cover due to temperature changes.
*
●
During the Heating mode 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 the Cooling mode or the Dry mode 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 the Heating mode 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.
*
When the Heating mode operation is started, fan speed is
●
temporarily very low, to allow internal parts to warm up.
*
During the Heating mode 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 to a higher
setting.
*
●
In the Heating mode, the indoor unit temporarily stops for
maximum of 15 minutes to perform the Automatic Defrosting
operation while the Operation indicator lamp is blinking.
●
The fan may operate at very low speed during the Dry
mode operation or when the unit is monitoring the room's
temperature.
●
During the Super Quiet operation, the fan will operate at very
low speed.
●
When the Monitor operation is performed in the Auto mode,
the fan rotates at very low speed.
*
●
During the Heating mode operation, water may be produced
from the outdoor unit due to the Automatic Defrosting
operation.
Clean the air filter. Afterwards, turn the Economy indicator
●
lamp off .
Problem
See page
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