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  1. Testing a pressure switch on a Bryant Plus 90 398AAZ

    I'm having a problem where the furnace is not firing. The inducer motor runs for about 20-25 seconds then shuts off.

    I'm troubleshooting all the safety items to see if something there is causing...
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    Unfortunately, this unit is from around 1990,...

    Unfortunately, this unit is from around 1990, before they had the newer intelligent systems that would display error codes.
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    Thank you, gentleman.

    Thank you, gentleman.
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    Bryant Plus 90 398AAZ Not Firing

    Went to use the furnace for the first time this fall last night. Turned on the thermostat and heard the inducer motor spin up. I walked away but then noticed 5 mins later that the furnace wasn't...
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