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Bryant Furnace Pressure Switch Replacement

FYI for anyone having similar problems with a Bryant furnace pressure switch. Your problem may be different. Working with a gas furnace and electricity is dangerous and can cause serious damage or death. You should or should not use this information at your own risk entirely.

Symptoms: in wet weather or after long periods of inactivity, the furnace would not start properly, would shut down with error code.

Cause: The pressure switch tends to get stuck thus throwing the respective error code and causing the system to shut down before trying to ignite the burners.

Solution: Temporary - you may tap on the pressure switch and that may be all that's nessesary to fix it for a few weeks/months as it did for me for some time. I had already ordered and received the replacement pressure switch, part number HK06NB124 from AllParts in Milwakee, WI. Total cost with shipping was just under $70. The new part looks a little different, but fits perfectly and seems to work fine. Very easy to replace, only a pair of pliers and a flat head screwdriver are necessary.

Found references to this very issue in several online repair forums, but can't find the links anymore. Generally, folks have been complaining that their pressure switches malfunctioned or got clogged with dust. Mine seemed clean when I took it out to check it. It tended to get stuck, so tapping it helped for a while. Hope this page here might help someone with a similar problem to get it solved relatively cheap.
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