[Bill]

One the bottom side of the black burner case is a round air shutter. Loosen the phillips screw and move it as close to the heater tank as you can. This will open the air shutter as far as possible.

Cleaning the combustion chamber, the U-channel chamber and the flame sensor helps also once the shutter is full open.

Webasto burners are sensitive to too little air but, thankfully, not to to much air.

[Bill]

Or the Vanner (type) equalizer ?

[Bill]

Put in the search word “Fulltimebill” and look thru all your post.

[Bill]

I’m planning on going. Just don’t make plans far out