ℹ
info Mr. Coffee
Status Coffeemaker makes a buzzing sound when brewing
Normal operation sound from the pump-based heating system.
? What Causes This
The pump-based heating system operates normally to achieve optimal temperature control.
ⓘ What This Means
This is normal operation. No action required.
Source: page 21 of the official manual
From the manual
This error code appears in:
Mr. Coffee Machine