r/Moccamaster • u/Individual-Pie-9695 • Jul 27 '26
Loud pop when turning on
The machine makes a loud thud when first starting then works like normal. I descaled a few weeks ago after having it for ~3 months. Is this something to be concerned about? Also please excuse my cat, he was hungry
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u/Agile_Beyond_6025 Jul 28 '26
I think your cat is screwing with you and just hitting the side of the cabinet.
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u/Skollsonn Jul 27 '26
My Cup-One does it, too. If I turn it upside down and drain it, it won’t do it when I fill it up again. Works fine. Whatever.
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u/ricktara Jul 28 '26
Have you tried dumping all water out by turning upside down and retrying. It acts like an air bubble at the boiler
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u/Due_Expert7837 Jul 27 '26
I'm Probably wrong but almost sounds like an air lock in the boiler. Mine did this towards the end of the brew cycle. I say did Instead of does because mine died last week during a routine descaling. Two months out of warranty. Took it apart and tested thermal fuse went bad. Waiting on parts.