Heater issue

[Dave Smith]

I appologize for adding yet another issue with my 2021 Keystone Premier RV. I feel like all I've done sice buying this trailer is look online and consult you all to fix issues. Today the heater blower kicks on but I the burner never ignight. Im plugged into the site electricity and am showing battery fully charged. I checked the fuse and it is good. The propane bottle is half full.

[JDDilly]

Sounds like a sail switch.

[ChuckS]

If you stand outside at furnace exhaust leave a helper turn the furnace on and listen at the exhaust for a ticking sound (igniter) and a light whiff of LP..

If NO ticking sound but blower is running then “most likely” issue is sail switch is not completing the circuit

If this is a Dometic Atwood furnace the sail switch failures have been sky high