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.
Rheem water heater pressure switch stuck open.
The switch activates with air force pushing a plunger in the mechanism which closes the circuit.
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The furnace was loud and caused by the draft inducer.
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This is fixed in my prior video.
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 pressure switch on a lennox g16 gas furnace monitors whether the air blower is in operation.
Also noticed the control board was blinking red.
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