Atwood Hydroflame Furnace Issue
Our 2005 Okanagan Truck Camper has an Atwood forced air furnace. When it comes on, it works well -- warms the camper up quickly. The problem is, it will only come on if the furnace itself is cold. ...
Forum Discussion
Well, three months later, and I am pleased to report that the problem is solved. It was the limit switch. This switch is mounted in the plenum and if the furnace gets too hot, it shuts the fuel valve off, effectively killing the flame, but permitting the fan to continue running. The switch in mine was too sensitive, shutting down the furnace during normal operating temps.
I found a post somewhere at another site, suggesting the limit switch might be the problem. I contacted a local RV repair shop and they agreed. Their quote was between 3 and 3.5 hours (at $98 per hour) to remove and re-install the furnace, and replace the switch. Parts would be $100 to $125.
I found the switch online (Amazon.ca) for approx. $25 including delivery. I bought a new sail switch too, simply because it was going to be exposed, so why not? I didn't have to remove the furnace -- just the circuit board, squirrel cage, and cover. Didn't even have to remove the fan motor -- the limit switch is just behind it. Put it all back together and the furnace works perfectly now.
So I'm quite delighted...! A $450 to $500 repair for about $55.
I found a post somewhere at another site, suggesting the limit switch might be the problem. I contacted a local RV repair shop and they agreed. Their quote was between 3 and 3.5 hours (at $98 per hour) to remove and re-install the furnace, and replace the switch. Parts would be $100 to $125.
I found the switch online (Amazon.ca) for approx. $25 including delivery. I bought a new sail switch too, simply because it was going to be exposed, so why not? I didn't have to remove the furnace -- just the circuit board, squirrel cage, and cover. Didn't even have to remove the fan motor -- the limit switch is just behind it. Put it all back together and the furnace works perfectly now.
So I'm quite delighted...! A $450 to $500 repair for about $55.
