When a furnace turns on one of the first components to start is the inducer motor.
Gas furnace pressure switch open with inducer on.
I don t see a flame in the aperture nor do i smell the gas.
If the inducer comes on the pressure switch is stuck closed.
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.
Only oem pressure.
Furnace nordyne model kg6rc 080c 16b used to work fine before but has not worked since reactivating gas.
Furnace diagnostics indicate pressure switch open with inducer on what could be the problem.
This is not a repair.
Which is why i made this video that go.
A furnace draft inducer motor vents toxic gases outside.
If the pressure switch is stuck it does not send enough power to the inducer and therefore the ignition sequence does not begin.
As noted above the pressure switches used for gas furnaces are almost always normally open.
The furnace pressure switch sends a signal to the furnace control board that verifies the inducer motor is working.
A gas furnace pressure switch is a safety component that makes sure gas is being vented from a furnace before starting.
A furnace pressure switch confirms the draft inducer motor is working.
The pressure switch must be replaced.
The source of pressure switch problems can sometimes be a pain to track down.
The furnace then runs awhile longer and this crazy cycle repeats pressure switch glitches open gas shuts off furnace starts another ignition cycle.
A draft inducer motor and pressure switch work together to make sure toxic gasses are vented from a furnace.
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.
A gas furnace pressure switch closes to allow current to pass through and start the ignition of the furnace.
I recently had my natural gas turned on after being off for a few months.
If you get a pressure switch code and the inducer will not come on remove one of the wires from the pressure switch.
Tapping lightly on the pressure switch body may open the switch and the unit may start.
Furnace pressure switch troubleshooting.
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