Dometic furnace troubleshooting

[Kenai]

Have a dometic heater. Stopped this morning and temp inside RV kept dropping. Started 45 minutes later. Any ideas? Thanks. Paul

 

[Nic7320]

Was your battery voltage okay? Have you checked the ignitor and burner area for debris or cobwebs? Past that, I would suspect the ignitor board.
Years ago, I had a propane 'fridge that wouldn't get cold so I opened up the panel and found -- a bird's nest. Sometimes that area needs cleaned.

Here's a source for replacement Dometic electronics boards: Dinosaur Electronics (they also sell on Amazon).

Replacement boards for Dometic

www.dinosaurelectronics.com