Espar D2 Issues - Temperature dependent start
I've had my Espar D2 installed in my 1998 Ford E-250 Quigley Homebuild since December of last year (many thanks to 1der for the installation guidance). It`s worked great the last 10 months down here in Bend where we live in it full-time (except for a few issues up at Mt. Bachelor as I don't have an Altitude sensor).
We haven't used it much this summer and admittedly, I haven't stayed up on the monthly run cycle. As you'd expect, I'm having issues getting my D2 to run, especially at night when temperatures are significantly lower here in the High Desert.
I've switched to running it on kerosene the last few days and the heater is able to start up just fine during the day time when temperatures are above freezing. However, once the temperatures dip below freezing, the heater shuts off, which is making for some chilly wake ups (38 degrees in the van this morning). I was hoping the kerosene would help clean out the burn chamber with it's hotter burn temps, but I'm starting to lose hope that my problems will be solved this easily.
Last night, i removed the fuel filter and gave it a quick clean. Everything seems fine with it and there wasn't any noticeable gunk built up. After the re-install, I verified that fuel is indeed making it's way all the way to the heater. I took the cover off the heater to inspect the atomizer screen, but realized I don't have the correct socket in order to remove the igniter, so I've tabled that until I can source one.
Any thoughts other than removing the atomizer screen and cleaning the burn chamber to try and get my heater back online?