This query is specific to our 2018 Thor Miramar 35.3 coach but it may also apply to any RV using the Firefly Integrations wireless products for system controls e.g. lights, pumps, AC, etc.
Recently our furnace (Dometic aka Atwood AFMD35141) has been intermittent that is sometimes it ignites and sometimes not. Of course it goes into lockout mode after the third attempt.
Well to make a long story short I have checked all of the furnace functions i.e. sail and limit switches, gas valve, ignitor and circuit board and all to be working correctly. Also made sure no air was in the LP line, no obstructions on the interior vents and the tank regulator was in working order. In addition outside vent has a screened cover to keep out the flying critters.
I am beginning to wonder if the issue is with the Firefly Integrations G7A panel. The reason I say that is because we had issues with both of our ACs this summer. The solution was to completely reboot the G7A by shutting down all power i.e. 12 VDC and shore power, wait 30 seconds and reapply power. We have tried this same method for the furnace but did not correct the problem.
My question is hve any of you out there had a similar situation? We will probably end of taking it in for a service call but I am not sure they will be able to determine the root cause of the problem.