This video provides step by step instructions for replacing the pressure switch on rheem furnaces.
Rheem water heater pressure switch stuck open.
A pressure switch is designed to sense the negative pressure created by the draft inducer motor during the furnace startup and to shut down the furnace ignition if the air pressure is inadequate.
If your lennox does not activate normally during the ignition sequence try running a quick bypass of the pressure switch to determine if it is the.
Also noticed the control board was blinking red.
This is fixed in my prior video.
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The furnace was loud and caused by the draft inducer.
The most common reasons for replacing the switch are when.
The pressure switch on a furnace may fail or get stuck in an open position and there are few simple checks you can complete before testing the switch.
The switch activates with air force pushing a plunger in the mechanism which closes the circuit.
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