32
D
Troubleshooting
If a fault occurs, check the security and condition of the fuses and the
connections.
If there is a malfunction, the heater unit switches to defect lock mode; there is
no error message on the clock display.
Before you visit a Webasto Service station, try to clear the defect lock.
You can rectify the following faults yourself:
Fault Description
Possible Cause
Corrective Action
Heater unit switches
itself off automatically
(=fault shutdown)
No combustion after
Start and repeat Start,
flame goes out during
operation.
Heater unit switches off
and on again (not more
often than 2x)
Heater unit does not
switch on
Heater unit has no
power
Check the heater unit
power supply and the
grounding point
connection
Heater unit switches off
while heating (=fault
shutdown)
Heater unit has
overheated due to lack
of coolant
Refill coolant according
to manufacturer's
specifications
DE_EN.book Page 32 Friday, August 25, 2006 3:49 PM