Troubleshooting
FJ 1700, FJ 2000, FJ 2200, FJ 3200
EN
30
12
Troubleshooting
Once per year
Check the profile seals:
➤
Check the seal between the roof air conditioner and the roof of the vehicle for
cracks and other damage.
Once per year
Have the heat exchanger serviced:
➤
Have the heat exchanger of the roof air conditioner serviced by specialist work-
shop.
Once per year
Replace the carbon filter (fig.
➤
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.
Problem
Cause
Remedy
Roof air conditioner
constantly switches itself
off.
Icing sensor has tripped.
Outer temperature is too low or all air noz-
zles are closed.
No cooling capacity
The roof air conditioner is not set to
cooling.
➤
Set the roof air conditioner to cooling.
The ambient temperature is above
52 °C.
The roof air conditioner is only designed for
ambient temperatures of up to 52 °C.
The temperature set is higher than
the room temperature.
➤
Select a lower temperature.
The ambient temperature is below
16 °C.
The roof air conditioner is only designed for
ambient temperatures above 16 °C.
One of the temperature sensors is
defective.
➤
Contact an authorised workshop.
The vaporiser fan is damaged.
The condenser fan is damaged.
Low air output
The air intake section is clogged up.
➤
Remove any leaves and other dirt from
the ventilation grilles of the roof air condi-
tioner.
The blower is defective.
➤
Contact an authorised workshop.
Water enters the vehicle
The condensation water drainage
openings are clogged up.
➤
Clean the drainage openings for con-
densation water.
The seals are damaged.
➤
Contact an authorised workshop.
Interval
Inspection/maintenance
DometicFJ1700-FJ2000-FJ2200-FJ3200_OPM_4445101818_EMEA16_2022.book Page 30 Monday, March 21, 2022 9:50 AM
