Dometic FRESHJET FJ1700 Bedienungsanleitung Seite 30

Troubleshooting
Interval
Once per year
Once per year
Once per year
12 Troubleshooting
Problem
Roof air conditioner
constantly switches itself
off.
No cooling capacity
Low air output
Water enters the vehicle
30
Inspection/maintenance
Check the profile seals:
➤ Check the seal between the roof air conditioner and the roof of the vehicle for
cracks and other damage.
Have the heat exchanger serviced:
➤ Have the heat exchanger of the roof air conditioner serviced by specialist work-
shop.
Replace the carbon filter (fig. 7, page 8):
➤ Manually take off the filter cover (1).
➤ Remove the filter (2).
➤ Remove the carbon filter (3).
➤ Clean the filter (2) with a detergent solution and let it dry.
➤ Put a new carbon filter in.
➤ Put the dry filter (2) back in.
➤ Put the cover (1) back on.
Cause
Icing sensor has tripped.
The roof air conditioner is not set to
cooling.
The ambient temperature is above
52 °C.
The temperature set is higher than
the room temperature.
The ambient temperature is below
16 °C.
One of the temperature sensors is
defective.
The vaporiser fan is damaged.
The condenser fan is damaged.
The air intake section is clogged up. ➤ Remove any leaves and other dirt from
The blower is defective.
The condensation water drainage
openings are clogged up.
The seals are damaged.
FJ 1700, FJ 2000, FJ 2200, FJ 3200
Remedy
Outer temperature is too low or all air noz-
zles are closed.
➤ Set the roof air conditioner to cooling.
The roof air conditioner is only designed for
ambient temperatures of up to 52 °C.
➤ Select a lower temperature.
The roof air conditioner is only designed for
ambient temperatures above 16 °C.
➤ Contact an authorised workshop.
the ventilation grilles of the roof air condi-
tioner.
➤ Contact an authorised workshop.
➤ Clean the drainage openings for con-
densation water.
➤ Contact an authorised workshop.
EN