Atwood Rv Furnace Sail Switch Replacement

This is a replacement sail switch for select atwood afs series furnaces.

Atwood rv furnace sail switch replacement.

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. After reading numerous articles forums manuals i started troubleshooting and found out that limit switch don t confuse it with sail switch is not. Atwood hydroflame af medium or dometic df medium model furnace with serial number before 72489156 af large dc or df large dc model furnace with serial number before 72991127 af large ac or df large ac model furnace with serial number before 81689155. The sail switch is an air proving device.

Furnace would not light. Removed my rv furnace and bench checked it to find a bad sail switch. Took it all back apart and found the new sail switch worked 1 time. It insures that the combustion wheel is rotating fast enough so that there is a proper air and gas mixture for smooth ignition.

The sail switch acts as a safety device making sure there is no propane flow without air flow. Buy your atwood rv furnace repair parts today. This is a replacement sail switch for select atwood df series furnaces. Also of note on my heater model the sail switch was mounted inside of the fan enclosure.

If i had known where the sail switch was located you can access it by removing the top half of the fan enclosure. It is a safety component that will not let ignition occur until it sees 75 of the motor s rpm s. Ordered attwood 36680 s w and installed it furnace and it worked fine. Limit switch 190 37022 sail switch 36680 in stock standard 1 3 day usps shipping 16 85 atwood furnace 8531 iv exploded parts view links item 1 blower wheel 33126 item 8 on off switch 31092 replaces 36121 item 9 gas valve replacement coil 31000 nla not shown time delay relay 48000 item 10 combustion air wheel 33128.

Dometic atwood 33063 replacement low air flow sail switch. Took the furnace back to the rv cold night and installed it. After replacing the sail switch my furnace works perfectly.