During combustion the combustion blower creates an air pressure that is less than atmospheric negative pressure between the inlet side.
Furnace air flow sensor.
Gas supply shut off.
Make sure that the gas supply valve for your furnace is fully open.
Replace the air filter in your goodman furnace regularly to keep dust and dirt from clogging the filter and blocking air flow through the furnace.
The furnace draws air from the surrounding area or from outside the room.
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Follow the instructions in your owner s manual to change the air filter.
The premise here is that as the filter fills up with contaminants the differential air pressure in.
Once lit the burners then heat a flame sensor.
The furnace s computer uses the signal from the flame sensor to confirm a successful ignition and turn off the igniter.
Most high efficiency furnaces use a hot surface igniter that heats up to 1 800 degrees f to light the burners.
The draft inducer motor is a blower that creates a flow of combustion air through the furnace s heat exchanger s to make sure all combustion exhaust byproducts are vented outside the home via the flue vent.
There are also mechanical air flow gauges that sense pressure changes.
Royalton 66000 max btu input natural gas 95 percentage upflow horizontal variable speed 2 stage forced air furnace.
If the furnace is located in a utility closet or in a cramped storage room there may not be sufficient available air for the furnace to heat properly.