8 Troubleshooting
Operation manual
11
FTXF20~42D5V1B
Daikin room air conditioner
3P520336-14P – 2021.09
7.2
To clean the indoor unit and user
interface
NOTICE
▪ Do NOT use gasoline, benzene, thinner, polishing
powder or liquid insecticide.
Possible consequence:
Discoloration and deformation.
▪ Do NOT use water or air of 40°C or higher.
Possible
consequence:
Discoloration and deformation.
▪ Do NOT use polishing compounds.
▪ Do
NOT
use
a
scrubbing
brush.
Possible
consequence:
The surface finishing peels off.
▪ As an end user, you may NEVER clean inside parts of
the unit by yourself; this work must be performed by a
qualified service person. Contact your dealer.
DANGER: RISK OF ELECTROCUTION
Before cleaning, be sure to stop the operation, turn the
breaker OFF or pull out the supply cord. Otherwise, an
electrical shock and injury may result.
1
Clean with a soft cloth. If it is difficult to remove stains, use
water or a neutral detergent.
7.3
To clean the front panel
1
Clean the front panel with a soft cloth. If it is difficult to remove
stains, use water or a neutral detergent.
7.4
About the air filters
Operating the unit with dirty filters means that the filter:
▪ CANNOT deodorise the air,
▪ CANNOT clean the air,
▪ poor heating/cooling,
▪ causes odour.
7.5
To clean the air filters
1
Push the tab at the centre of each air filter, then pull it down.
2
Pull out the air filters.
2
1
3
Wash the air filters with water or clean them with a vacuum
cleaner.
4
Soak in lukewarm water for about 10 to 15 minutes.
5
Install all filters back in their original positions.
INFORMATION
▪ If the dust does NOT come off easily, wash them with a
neutral detergent diluted in lukewarm water. Dry the air
filters in the shade.
▪ It is recommended to clean the air filters every 2
weeks.
7.6
To take following items into
account before a long idle period
Operate the unit in
fan only
mode for several hours to dry the inside
of the unit.
1
Press
and select fan only operation.
2
Press
to start operation.
3
After operation stops, turn the breaker off.
4
Clean the air filters and replace them in their original position.
5
Remove the batteries from the user interface.
INFORMATION
It is recommended to have periodical maintenance
performed by a specialist. For specialist maintenance,
contact your dealer. Maintenance costs shall be borne by
the customer.
In certain operating conditions the inside of the unit may
get dirty after several seasons of use. This results in poor
performance.
8
Troubleshooting
If one of the following malfunctions occur, take the measures shown
below and contact your dealer.
The system MUST be repaired by a qualified service person.
Malfunction
Measure
If a safety device such as a fuse, a
breaker or an earth leakage breaker
frequently actuates or the ON/OFF
switch does NOT properly work.
Turn OFF the main power
switch.
If water leaks from the unit.
Stop the operation.
