Auxiliary heater is overheating.

Symptoms

• Check if air channels are clogged.
• The heater can be restarted once the fault has been repaired. When this is done, the heater should be switched on and off.
• If the heater has been overheated a number of times (about 10 times in succession), it will remain switched off. Have the fault repaired by an authorized Sprinter Dealer.