How to replace a Dometic furnace sail switch
Our Fuzion 429 has a Dometic furnace. The furnace was intermittently lighting. One reason for this could be a malfunctioning sail switch. We took the action of replacing the sail switch.
Immediately below is the big "how to" video that takes you from start to finish.
Three sections of this ~16 minute video have been split out into shorter, more focused videos as you can see below.
How a sail switch works
In this video, part of the longer video above, we show how a sail switch works by attaching it to a multimeter.
Diagnosing a sail switch
In this video, part of the longer video above, we show how to manually activate and deactivate a sail switch as a method of diagnosing if your sail switch is properly working.
Explanation of new sail switch design
In this video, part of the longer video above, we discuss what is different in the design of a replacement sail switch.