10-22-2023, 01:07 PM
Have you tried cleaning the components, cleaning the photo sensor, replacing the nozzle, and aligning the electrodes? Just as Mr Aquahot recommended.
Start with simple first. Don’t make any assumptions about the nozzle based on age. Your white smoke was a clue the nozzle was not atomizing.
If it is lighting but will not stay lit: photosensor, fuel filter, computer
Are you sure it is lighting? Because just listening to the burner cycle through its blower on and blower off cycles can trick you into thinking it has fired off for a minute. When it burns, it also roars. Plus the exhaust pipe starts to get warm.
There are schematics of the C plug and B plug in the trouble shooting manual. Looking at them for a minute or two would reveal what to power to get the motor to spin.
If you are going to play with the Webasto unit outside the boiler tank, I highly suggest you disconnect the fuel lines. Else you could have a flame thrower on your hands pointed at you or the coach.
The trouble shooting steps in the manual are VERY good, I can appreciate your need for speed with the impending trip but there are no short cuts in figuring out why your burner won’t light.
In just reading what you wrote, you said water/coolant was drained from that area. Now you have tons of rust and corrosion. Sounds like you have a leak. You said it holds pressure. Are you losing coolant?
Start with simple first. Don’t make any assumptions about the nozzle based on age. Your white smoke was a clue the nozzle was not atomizing.
If it is lighting but will not stay lit: photosensor, fuel filter, computer
Are you sure it is lighting? Because just listening to the burner cycle through its blower on and blower off cycles can trick you into thinking it has fired off for a minute. When it burns, it also roars. Plus the exhaust pipe starts to get warm.
There are schematics of the C plug and B plug in the trouble shooting manual. Looking at them for a minute or two would reveal what to power to get the motor to spin.
If you are going to play with the Webasto unit outside the boiler tank, I highly suggest you disconnect the fuel lines. Else you could have a flame thrower on your hands pointed at you or the coach.
The trouble shooting steps in the manual are VERY good, I can appreciate your need for speed with the impending trip but there are no short cuts in figuring out why your burner won’t light.
In just reading what you wrote, you said water/coolant was drained from that area. Now you have tons of rust and corrosion. Sounds like you have a leak. You said it holds pressure. Are you losing coolant?
Richard and Rhonda Entrekin
99 Newell, 512
Maverick Hybrid Toad
Inverness, FL (when we're home
)