[Greg Osborne]

I suspect the heating element has gone bad and shall test it with a multimeter. I cannot find the "series" number on the decal. The model number is 27461228AG.

[PS Staff - Sheila]

The series number is the first two digit of the serial number.

In your case it is 27.

You will use the element that has the series 25 after it.

Here is a link to your dishwasher model MDB9100AWW.