Daikin FHQ50CBVEB Operation Manual page 18

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-venti-
lated.
The horizontal blades at the air outlet are
closed while the indoor stops.
• Check if the air filter is clogged.
Ask a qualified service person to clean the air
filters.
A decrease in the airflow 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 filter is
clogged with dust or dirt.
In addition, this may cause dew condensation
at the air outlet.
(Refer to "8. MAINTENANCE" on page 9.)
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-venti-
lated.
The horizontal blades at the air outlet are
closed while the unit stops.
Obstacles decrease the fan speed, and cause
performance decrease and breakage when
discharged air is suctioned.
They cause a waste of electricity, and that may
stop the devices.
• Check if the air filter is clogged.
Ask a qualified service person to clean the air
filters.
A decrease in the airflow 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 filter is
clogged with dust or dirt.
In addition, this may cause dew condensation
at the air outlet.
(Refer to "8. MAINTENANCE" on page 9.)
• Check if the set temperature is not proper.
Set to an appropriate temperature, fan speed,
and discharge direction.
• Check if the FAN SPEED button is set to LOW
SPEED.
Set to an appropriate temperature, fan speed,
and discharge direction.
• Check if the airflow direction 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.
15
• 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 exces-
sive (when cooling).
4. Operation was performed or stopped
although the ON/OFF button was not
pressed.
• Are you sure that the ON/OFF timer operation
is not used?
Turn off the ON/OFF timer.
Please refer to operation manual attached to
the remote controller.
• Are you sure that any remote control device is
not connected?
Contact the central control room that directed
the stop.
• Are you sure that the display for centralized
control is not lit?
Contact the central control room that directed
the stop.
If the problem is not solved after checking the
above points, please do not try to repair it
yourself.
In such cases, always ask your local dealer.
At this time, please tell the symptom and
model name (written on the model name
plate).
If one of the following malfunctions occurs, take
the measures shown below and contact your
local dealer.
The air conditioner must be repaired by a qualified
service person.
WARNING
When the air conditioner is malfunctioning
(giving off a burning odor, etc.), turn off
power to the air conditioner and contact your
local dealer.
Continued operation under such circumstances
may result in a failure, electric shocks or a fire.
Contact your local dealer.
• If a safety device such as a fuse, a power circuit
breaker or an earth leakage breaker frequently
actuates;
Measure: Do not turn on the main power switch.
• If the ON/OFF switch does not properly work;
Measure: Turn off the main power switch.
• If water leaks from the indoor unit.
Measure: Stop the operation.
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