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RUC 5208X, RUC 6308X, RUC 8308X
Problem
Unusual noises (e.g. loud
humming)
12.1 DC operation only
Problem
The refrigerator does not
work. The display does not
light up.
The refrigerator does not
cool.
EN
Possible cause
A component of the refrig-
erant circuit cannot move
freely (touching the wall).
A foreign object is located
between the cooling unit
and the wall.
Possible cause
Insulation faults, corro-
sion, breaks or loose con-
nections between the
battery and electronics
unit.
Main switch defective (if
installed).
Internal fuse has blown.
The fuse in the DC cable is
defective.
The vehicle fuse has
blown.
The ignition is not
switched on.
The vehicle battery is
discharged.
Internal error or defective
components.
The battery capacity is too
low.
The refrigerator is not con-
nected correctly.
Suggested remedy
➤ Bend the component carefully away from the
obstruction.
➤ Remove the foreign object.
Suggested remedy
➤ Check connections and live cables for insulation
faults, corrosion, breaks or loose connections.
➤ Replace the main switch.
➤ Replace the internal fuse.
The fuse on the relay must be replaced.
➤ Contact an authorized service agent.
➤ Replace the vehicle fuse.
Refer to the operating manual of your vehicle.
➤ Switch on the ignition.
➤ Charge the vehicle battery.
➤ Contact an authorized service agent.
➤ Replace the battery.
➤ Check the connections (see chapter "Connect-
ing the refrigerator to DC power supply" on
page 26).
➤ Check the cable cross-sections and lengths
(fig. k, page 26).
Troubleshooting
51
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