Diesel heaters

[PaulRainbow]

I think this is the sensor. Abut there is a hole on the unit

That is the sensor. The heater should be reasonably stable if the sensor is working as it should, at least mine does. Might be worth giving it a blast with some contact cleaner ?

 

[Rappey]

. The kerosene burns cleaner than diesel,

Definitely. Some report that a heavily carbonised diesel heater when ran on kerosene for some hrs ends up very clean inside.
We have oil fired central heating- kerosene. In the past 32 yrs its never had a blocked jet or similar. I ran a force 10 diesel heater on kerosene for 20 yrs, same story.
Kerosene is currently about 60p/l but its not so easy to buy in small quantities at sensible prices.

 

[Refueler]

Definitely. Some report that a heavily carbonised diesel heater when ran on kerosene for some hrs ends up very clean inside.
We have oil fired central heating- kerosene. In the past 32 yrs its never had a blocked jet or similar. I ran a force 10 diesel heater on kerosene for 20 yrs, same story.
Kerosene is currently about 60p/l but its not so easy to buy in small quantities at sensible prices.

Nanuk Diesel for supply to Alaska and various arctic regions is Kerosene. DPK to be exact ... Dual Purpose Kero. I oversaw supply hundreds 000's of tons of it .....

 

[Owl @ 6s and 7s]

Ours is a webasto it’s so frustrating the control is a on off switch and a dial to control the heat which is crude it’s either to hot or to cold . Is there a better controller .

We have the Webasto AirTop 2000 with this Multicontrol timer and a similar sensor that you attached in #19. We've had the heater since new, four seasons now, and still the original diesel from 2021 in its tank. Obviously not much use, but on those couple occasions I've found the temperature to remain steady enough in our small boat, not needing constant adjustment.
According to Webasto the Multicontrol timer is compatible with all Webasto AirTop models.
Webasto Multicontroller Smart 7 DAY Timer 12/24V Operating Manual