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6. MAINTENANCE
6.1 Cleaning the Filters
To ensure optimal air conditioner e󰀩ciency, clean
both lters on the di󰀨user regularly, dusting them
from the outside without removing them.
If this is not su󰀩cient to remove dust, extract them
and wash them with a mild detergent solution, al-
lowing them to dry properly before replacing them
in the di󰀨user.
6.2 Unsatisfactory performance
In most cases, poor air conditioner performance
is caused by incorrect use rather than actual mal-
functions:
The unit is too small for the volume of air you
wish to condition.
The vehicle walls are poorly insulated.
The doors are opened too frequently.
There are too many people inside the vehicle.
The power supply voltage is incorrect.
6.3 Troubleshooting
If the air conditioner malfunctions, before
attemptinganyrepairs,rstcheck:
• That the power supply voltage is cor-
rect;
• That the intake vents are unobstructed;
• Thattheairoutowventsareopen.
A list of common problems is given below, togeth-
er with their causes and solutions.
1. The air conditioner does not start:
Check that the remote control batteries are
charged;
Check the electrical power supply. Connect
another appliance or check with a voltme-
ter.
2. Ventilation is insu󰀩cient:
Check that the directional vents are open;
Check that the di󰀨user lters are clean.
3. The air conditioner does not work in Cool
mode:
Check that the temperature setting is lower
than the ambient temperature.
4. The air conditioner does not work in Warm
mode:
Check that the temperature setting is high-
er than the ambient temperature.
5. The air conditioner is working ine󰀩ciently:
Clean the air lter, condenser and evapo-
rator using suitable detergents. After a long
period of inactivity, wash the air conditioner
before use.
If, despite cleaning, the air conditioner still
fails to regain its initial e󰀩ciency, the cool-
ant gas load must be checked.
- 19 -Rev.011
Translation of the original instructions
DualClima 8400H - DualClima 8400HB - DualClima 8400HN - DualClima 12500H
47


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