tpolley
New Member
Can anybody help with a problem i have with a webasto HL32 hot air blower,
The unit runs through start up , but will not fire.
Cheers
The unit runs through start up , but will not fire.
Cheers
Hot Air Heaters
- Thread starter tpolley
- Start date
Chris_Robb
Well-Known Member
The older ones required a good battery voltage to fire up. I always run the engine other wise it will not start and even then it make take 2 goes. My unit is 25years old.
If there is a diesel pump, check the voltage at the pump when the fan first starts. if it is too low, due to the current draw on the glow plug, it will not pump diesel hence it shuts down again. You should be able to hear the pump click, though if its too near the engine you might not.
Other things to check: Make sure all wiring contacts are clean. - dirt = voltage drop. If the glowplug is working, then there will be an appreciable drop in battery voltage.
If there is a diesel pump, check the voltage at the pump when the fan first starts. if it is too low, due to the current draw on the glow plug, it will not pump diesel hence it shuts down again. You should be able to hear the pump click, though if its too near the engine you might not.
Other things to check: Make sure all wiring contacts are clean. - dirt = voltage drop. If the glowplug is working, then there will be an appreciable drop in battery voltage.