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airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8167
Experience:  Furnace, A/C and heat pump specialist.
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355mav060120AEKA error code33-replaced flame rollout sensor

Customer Question

Bryant 355mav060120AEKA error code33-replaced flame rollout sensor but keeps tripping
JA: How old is the appliance? Have you gotten error messages before?
Customer: 2001
JA: Do you plan on doing the work yourself?
Customer: yes-former hvac tech
JA: Anything else we should know to help you best?
Customer: not that i can think of- heat exchanger??
Submitted: 8 months ago.
Category: HVAC
Expert:  airheatman replied 8 months ago.

If the rollout is still tripping has to be an issue with heat exchanger, Does flame float out of chamber?

Customer: replied 8 months ago.
Expert:  airheatman replied 8 months ago.

Have you tried bending the bracket up about a quarter inch to keep the rollout from getting too hot? I have seen heat build up enough to trip these switches prematurely as calibration is not the best being most are cheap imports.

Customer: replied 8 months ago.
The rollout doesn't have a bracket. It screws to the housing
Expert:  airheatman replied 8 months ago.

I see. Do you have a thermometer you can hold against rollout and verify if it is actually getting hot enough it should trip?

Customer: replied 8 months ago.
Not at this time, but I can get one. I carefully checked to see any flame near the sensor and there is none. Also cleaned all of the burners
Expert:  airheatman replied 8 months ago.

Yeah about the only thing that would make it trip is heat exchanger allowing it to get to hot due to a crack or bad gasket or the switch tripping prematurely.

Customer: replied 8 months ago.
Kind of what I thought! Thanks
Expert:  airheatman replied 8 months ago.

Thanks for letting me give you my opinion and suggestions

Customer: replied 8 months ago.
You're welcome!
Expert:  airheatman replied 8 months ago.

If you have further questions, please let me know.

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