Atwood Rv Furnace Sail Switch

Several things can be checked for a cause in this case.

Atwood rv furnace sail switch.

After replacing the sail switch my furnace works perfectly. Took it all back apart and found the new sail switch worked 1 time. Furnace would not light. An rv furnace has an internal sail switch that will prevent the machine from igniting in cases of air flow being insufficient for combustion.

Dometic atwood 33063 replacement low air flow sail switch. After reading numerous articles forums manuals i started troubleshooting and found out that limit switch don t confuse it with sail switch is not. How to rv furnace repair sail switch lighting procedure in this video i bench test a manual light propane rv furnace and locate the sail switch i also show h. This is a replacement sail switch for select atwood df series furnaces.

It is a safety component that will not let ignition occur until it sees 75 of the motor s rpm s. I pulled my entire heater out of my rv but didnt need to. The sail switch acts as a safety device making sure there is no propane flow without air flow. It insures that the combustion wheel is rotating fast enough so that there is a proper air and gas mixture for smooth ignition.

Diy with rv replacing limit switch atwood 8535 so at some point of course that was a coldest part of our trip in yellowstone furnace atwood 8535 iii started blowing cold air only. Took the furnace back to the rv cold night and installed it. Also of note on my heater model the sail switch was mounted inside of the fan enclosure. Ordered attwood 36680 s w and installed it furnace and it worked fine.

The sail switch is an air proving device. This is a replacement sail switch for select atwood afs series furnaces. If i had known where the sail switch was located you can access it by removing the top half of the fan enclosure. How do i test sail switch on the furnace it s 8531 atwood hydroflame answered by a verified rv mechanic we use cookies to give you the best possible experience on our website.