Furnace do not heat

[ragnarm]

Hello, we have a 2018 Jayco 38BHDS with a Dometic DF Series furnace. It worked a couple of times maybe five weeks ago. Now the fan starts but no heat. The heater diagnostic lights flash three times with a tree second pause, indicating a soft ignition lockout fault. We have plenty of propane. Any suggestions?

[curver900]

Kinked LP line?

[Iraqvet05]

Cobwebs in the ignition chamber?

[Route 66 Traveler]

Try removing the +12 volt power to the furnace. Should reset the flashing code. The diagnostic codes on page 8 say to wait an hour before reapplying power: https://manuals.heartlandowners.org/...wood%20AFM.PDF


Make sure you have a good propane source with no air in the lines. Turn on the stove top to clear any air from the lines.