DescriptionThis video provides step-by-step instructions for replacing the flame rollout limit switch on York furnaces. The most common reasons for replacing this switch are when the furnace does not heat or runs only for a few minutes or when the furnace blower runs all the time.
All of the information in this limit switch replacement video is applicable to the following brands: York
Step-By-Step Instructions1
To replace a flame rollout limit 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 wires from the flame rollout limit switch you’re replacing.
4
Remove the mounting screw and pull the old switch out.
5
Install the new flame rollout limit switch by inserting one tab behind the mounting bracket then secure the other tab with the mounting screw.
6
Connect the wires to the new switch.
7
Reposition the combustion chamber panel and rotate the knobs to secure.
8
You’re now ready to restore power to the furnace and confirm that it’s functioning properly.