Dometic RM2811 info needed -- running on LP

[maroth]

Greetings, Mario here.

I am new to the airstream space, and am grateful for all the information on this site. It has come in handy several times already. I need some assistance on troubleshooting an issue I am having with my refridge. It runs perfectly on shore power, but it won't start or run on LP.

I have verified the fuses on the controller board, also, I ignited the LP with a lighter during the 45 seconds it tries to start, but the LP always stops when I turn off the lighter. I do not see any "sparkles" during the ignition (45 second) period. I have two full #30 tanks, only one of them is currently open feeding LP to the trailer.

Anyway, I suspect I might have a bad controller, but don't want to put out the $ until I am fairly sure. So, is there any testing methods I can use to test it completely? My issues are; 1) why won't the unit ignite the LP at start-up, and 2) why won't it stay lit after I manually light it?

Any input is greatly appreciated, and I thank you in advance.

Regards,
Mario

1989 Excella 29'
2000 Ford Diesel F250 (330,000 miles)