Bunn coffee maker parts cannot be identified

My Bunn Thermofresh coffee maker is five years old, has been thoroughly cleaned and is still overflowing. I have done every procedure to de-lime it, and I replaced the sprayer with the one in the lower right corner of this photo, but to no avail.

However, I cannot determine what these other parts are for: specifically the beige thing and the one hole black button thing.

coffee

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How do you troubleshoot a Bunn coffee maker?

Try running a brew cycle with just water (no filter or coffee grinds) to see if it overflows. If it still does, the issue is with the machine. If it doesn't overflow try a different filter or a different coffee grind - Bunn recommends using OEM coffee filters to provide the best performance.

How do I reset my Bunn coffee maker after cleaning?

To reset "CLEAN" indicator, press and hold \u201cH\u201d and \u201cM\u201d buttons for 3 seconds during idle.

How long does a Bunn coffee maker last?

It's probably for one year. If that is the case \u2013 being cynical here \u2013 you might expect to start having problems soon after its first birthday! All that said, some brewers do have a reputation for lasting longer. Bunn brewers have a pretty good track record for lasting for several years.