how to check a dishwasher that has started humming or buzzing
for a new dishwasher hum or buzz, record the cycle stage and whether the machine drains. the useful home check is the removable filter, plus a pump cleaning opening only where the manual permits it; continued noise needs assessment rather than a guessed pump replacement.
- repair type
- owner care
- difficulty
- moderate
- hands-on time
- ~ 15 min
when to get help
- stop using the dishwasher for a leak, burning smell, damaged parts or sharp debris you cannot handle safely.
steps
- note when the noise happens
from outside the closed dishwasher, note the cycle stage and whether water remains. do not keep repeating a cycle with severe buzzing or grinding.
- check the filter safely
switch off, unplug and let hot water and parts cool before cleaning the filter. only open a pump cover if the manual allows it, and watch for sharp debris. do not force access.
- arrange a repair if the noise continues
tell the repairer when the sound occurs and whether the machine drains. if the pump cannot be reached through the manual's cleaning opening, leave it alone. do not remove panels, spray lubricant into it or test wiring.
diy warning
working on appliances can involve mains electricity, water and moving parts. always disconnect power and water before you start. in Australia, gas work must be done by a licensed gasfitter, and fixed (hard-wired) electrical work by a licensed electrician. everything on this site is guidance only, and any repair you carry out is at your own risk. we are not responsible for any damage or injury caused by attempting a repair. if you are not confident, please use a qualified technician.
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