Webasto GBW 300 Operating Instructions - page 2
Heater operation
The water heater can be switched on using either a switch or timer.
Before switching on the heater, the vehicle heating must be set to "warm". The heater fan
in the vehicle should be set to the 1st speed in the case of a 3-speed fan and to the 2nd
speed in the case of a 4-speed fan. Fans with infinitely variable speed should be set to at
least 1/3 of the fan performance.
The heater cuts out automatically
Cause
Cause
Remedy
Troubleshooting
If a fault occurs, check the fuse and the plug connectors to ensure that they are in perfect
condition and secure. If the action described below does not rectify the fault, have the
heater checked by Webasto trained personnel.
No flame after the start
The flame goes out during operation
Switch the heater off and on again once
Switch the heater off and on again once
The vehicle's voltage is to low
Charge the battery
Switch the heater off and on again once
The combustion air and/or exhaust
lines are blocked
Check that the combustion air and exhaust lines
are clear