Troubleshooting - Webasto Thermo Top V Operating And Servicing Manual

Troubleshooting

In the event of a malfunction, fuses and electrical connections should be
checked for condition and security.
The heater enters its fault lock-out state if there is a malfunction. No fault
indication is shown on the display.
Before you visit a Webasto service centre, attempt to remedy the fault lock-out
yourself.
The following faults can be remedied directly by the user:
Error description
Heater switches off
automatically (= fault
lock-out)
Heater does not switch
on
Heater switches off
during operation (= fault
lock-out)
Possible cause
No combustion after
starting and restarting.
Flame goes out during
operation.
Heater is without electric
power
Heater has overheated
due to lack of coolant
Remedy
Switch off heater and
switch on again (not
more than twice)
Check power supply to
heater and ground
connections
Refill coolant as directed
by manufacturer
D
GB
15