RUC5(x)08X, RUC6(x)08X, RUC8(x)08X Troubleshooting
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11.2 AC operation only
11.3 Faults and beeps
All faults are indicated on the display by highlighting the middle submenu on the main menu with a red banner and
a code (error screen, see fig. 6 B, page 16).
Faults that terminate the entire cooling function are additionally indicated by a beep. The beep will last for
2 minutes and repeat every 30 minutes until the fault is cleared.
If several faults occur, the display shows the last fault that occurred. After the fault has been cleared, subsequent
faults are displayed.
➤ Press the control knob for 2 – 4 seconds to confirm a fault.
➤ Press the button in the settings menu (see chapter “Settings menu” on page 13) to mute the beep.
WARNING type fault messages
All faults of the WARNING type are reset automatically once the fault has been rectified.
Problem Possible cause Suggested remedy
The refrigerator does not
work. The display does not
light up.
The vehicle is not con-
nected to the AC power
supply.
➤ Connect the vehicle to the AC power supply.
Main switch defective (if
installed).
➤ Replace the main switch.
Internal fuse has blown. ➤ Replace the internal fuse.
The fuse in the AC cable is
defective.
➤ Contact an authorized service agent.
The integrated mains
adapter is defective.
➤ Contact an authorized service agent.
Internal error or defective
components.
➤ Contact an authorized service agent.
Error
message
Fault Solution
01 Defrost NTC sensor error ➤ Replace the defrost NTC sensor.
02 Refrigerator air NTC sensor error ➤ Replace the refrigerator air NTC sensor.
10
+
icon flashing
and a beep
The refrigerator door is opened for
more than 2 minutes.
➤ Close the refrigerator door.
11 DC undervoltage (<7.5 V) or
overvoltage (>31.5 V)
➤ Check the DC supply voltage.
14 Internal fan defective
Cooling operation is continued with a
fixed thermostat setting.
➤ Contact an authorized service agent.
17 Low current at the defrost heater (<1 A) ➤ Switch the refrigerator off and on again.
➤ Contact an authorized service agent if this error
occurs again.
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