Troubleshooting - Daikin FCFV50A Operation Manual

TROUBLESHOOTING

Please check before requesting
service.
1. If the air conditioner does not
operate at all.
• Check if fuse has blown.
Turn off the power supply.
Contact your local dealer.
• Check if the power circuit breaker is
blown.
If the tab of power circuit breaker is in
the OFF position, turn the power on
with the power circuit breaker switch.
• If the tab of power circuit breaker is in
the trip position do not turn the power
on with the power circuit breaker switch.
Contact your local dealer.
Power circuit breaker
(Earth leakage breaker)
• Check if there is a power failure.
Wait until power is restored. If power
failure occurs during operation, the
air conditioner automatically restarts
immediately after the power supply
recovers.
2. If the air conditioner stops after
operating the air conditioner.
• Check if the air inlet or outlet of outdoor
or indoor unit is blocked by obstacles.
Remove the obstacle and make it well-
ventilated.
• Check if the air fi lter is clogged. Ask a
qualifi ed service person to clean the air
fi lters.
• A decrease in the airfl ow volume of
the air conditioner will result and the
performance of the air conditioner will
be degraded and power consumption
will increase if the air fi lter is clogged
with dust or dirt.
In addition, this may cause dew
condensation at the air outlet.
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ON
Tab
Trip position
OFF
3. The air conditioner operates but it
does not sufficiently cool or heat
• Check if the air inlet or outlet of
outdoor or indoor unit is blocked by
obstacles. Remove the obstacle and
make it well-ventilated.
Obstacles decrease the fan speed,
and cause performance decrease
and breakage when discharged air is
suctioned.
They cause a waste of electricity,
increase operating noise, or that may
stop the devices.
• Check if the air fi lter is clogged. Ask a
qualifi ed service person to clean the
air fi lters.
A decrease in the airfl ow volume of
the air conditioner will result and the
performance of the air conditioner will
be degraded and power consumption
will increase if the air fi lter is clogged
with dust or dirt.
In addition, this may cause dew
condensation at the air outlet.
• Check if the set temperature is not
proper.
Set to an appropriate temperature, fan
speed, and discharge direction.
• Check if the doors or the windows are
open.
Shut doors or windows to prevent wind
from coming in.
• Check if the ventilation fan is in
operation.
• Check if direct sunlight enters the
room (when cooling).
Use curtains or blinds.
• When there are too many inhabitants
in the room (when cooling).
• Check if the heat source of the room is
excessive (when cooling).