Rv Furnace Sail Switch Location

Furnace would not light.

Rv furnace sail switch location.

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. As a result the vent will work but no heat will be produced. Time delay relay used on older furnaces newer furnaces have the relay incorporated into the circuit board this relay performs two separate jobs one to handle the relatively high current needed to run the blower motor and two to allow the blower to run for 45 to 90 seconds after the thermostat is satisfied. This can be caused by a stuck or fault sail switch or because the fan is turning to slowly to push the sail.

Other possible culprits could be the sail switch being on blower motor problems or the time delay relay switch being closed instead of open. Took it all back apart and found the new sail switch worked 1 time. An rv furnace has an internal sail switch that will prevent the machine from igniting in cases of air flow being insufficient for combustion. Removed my rv furnace and bench checked it to find a bad sail switch.

Ordered new limit switch atwood 37022 hydro flame limit switch 190 degrees around 15 with shipping paying attention to get one with correct limit temperature and also trying to find out with rv manufacturer for no reason i decided to contact them not atwood whether it s possible to take sail switch out without taking the furnace unit out. Took the furnace back to the rv cold night and installed it. Rv furnace doesn t shut off when temperature is. Ordered attwood 36680 s w and installed it furnace and it worked fine.

And in some circumstances it can be caused by a faulty limit switch. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The sail switch is failing to close fully resulting in no power being provided to the rest of the furnace. The sail switch then sends power to the high limit temperature control.

These two switches are safety switches and they are in series which means power passes from one to the other and then to the module board which sends power to the gas valve and the igniter which. The solutions to these are closing the relay switch and the sail switch as well as replacing a faulty blower motor. That thermo switch opens if the furnace gets too hot and shuts down the gas.