We have a Bryant 355mav050120. The furnace is about 10 years old and I installed a nest thermostat last year.

The furnace shut down over Thanksgiving weekend, throwing an error code. I had the unit serviced. The service tech indicated that he thought the problem was with the flame ignitor. Unit started back up and ran without issue for the past month.

We returned home from a trip last night and the unit was out of commission again, throwing a 24 error code.

Different tech from same company (fairly reputable) came today. He indicated that he thought the error code was incorrect and that he believed the real problem was a false code being thrown due to bearing failing, causing the motor to seize and throw the false code. He indicated that he was only able to get the unit functioning again after manually turning the motor until it kicked itself into gear.

Installer is recommending either replacement of the entire motor assembly (which he estimated to be $1300) or a new unit.

Curious for impressions of: (1) whether this diagnosis seems accurate; (2) if so, whether there are less expensive means to have the motor bearings replaced; or (3) whether you would recommend just replacing the entire furnace at this point in its life.

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