Prep the blower door.
Blower door safety switch malfunction.
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When a furnace blower door safety switch is taped.
Since the controls and blower are in that compartment it is impossible to work on the electrical controls with the blower door removed if you do not jump out or physically disable the door switch.
The blower door switch kills power to the furnace when the blower door is removed.
Your hvac system comes with a variety of safety devices and they are all there to increase personal safety.
And all these are for safety.
There is the flame roll out sensor the flame sensor not the same thing a limit switch and a serviceman s switch.
If you discover you need to install a new safety switch follow the step by step instructions on how to install a furnace door safety switch step 1.
The blower door safety switch is a simple plunger that when opened cuts the power to your gas fired furnace.
The door switch is designed mainly as a safety device.
Depending on the age of your furnace you probably have one of these.
Look to the right and you can see what they look like.
Many folks use duct tape to keep the switch closed.
Shut the power off.
The door must be in place for the switch to be activated and for the furnace to operate.
Often the same oem interlock door switch will fit bryant carrier and payne equipment using 115.
Wire the safety switch.
Many air handlers of more than one manufacturer may accept the same air handler door switch.