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64aggie's avatar
64aggie
Explorer
Jan 07, 2013

Atwood RV Furnace will not start after changing propane cyl

I recently changed over to the reserve cylinder when I had the other 30 lb. propane cylinder refilled. Now my furnace, Atwood Hydro Flame 8531-IV-DCLP, will not start. When I turn it on, using the the...
dgcarlson's avatar
dgcarlson
Explorer
Oct 20, 2013
Atwood HydroFlame 7900, blower starts, but intermittently the ignition will not "click". I was able to start the burner by slapping the inside of the air duct, so I'm thinking it's a sticky airflow switch. AGain, once the ignition clicks a few times, the gas will always ignite and heat starts. The blower needs to be up to a certain RPM at the start to close the airflow switch, before the gas valve opens and ignition starts. Comments?

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