DescriptionFurnace starts then stops? This video provides step-by-step instructions for replacing the pressure switch (or vacuum switch) on York furnaces. The most common reasons for replacing this switch are if the furnace isn't heating or only runs for a few minutes.
All of the information in this pressure switch replacement video is applicable to the following brands: York
Step-By-Step Instructions1
To replace the pressure switch on your furnace first shut off the power to the furnace.
2
Next, rotate the knobs securing the combustion chamber panel and pull the panel off.
3
Now disconnect the pressure switch wires.
5
Remove the mounting screws to release the old pressure switch.
6
Install the new pressure switch by positioning it on the draft inducer motor then replace the mounting screws to secure.
7
Attach the vacuum tube and connect the wires.
8
Reposition the combustion chamber panel and rotate the knobs to secure.
9
You’re now ready to restore power to the furnace and confirm that it’s functioning properly.