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WDT780SAEM1 Whirlpool dishwasher leaves black residue on door/inside walls

Ddonovan

Member
Joined
Jan 4, 2019
Messages
1
Location
Michigan
Model Number
WDT780SAEM1
Brand
Whirlpool
Age
1-5 years
Our dishwasher worked fine. All of a sudden one load had black residue all over the dishes and filled a glass that was right side up with black water. The washer was cleaned and filters checked and cleaned. Used afresh cleaners, vinegar cleaners and nothing helped. All future runs have still left the residue on the walls and inside of the washer after the walls and doors were cleaned prior to each run. Sometimes it appears on the silverware but the dishes appear clean. The residue appears with and without the use of soap (cascade dish pods) City water, no water issues. We actually have two dishwashers that are exactly the same and both have this issue.
Help please!!!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
123,984
Location
McMullen Valley, Arizona
Ok, this situation you have is very strange, and I have no clue what's causing it on both dishwashers.

You will need to have Whirlpool come out to investigate.

Rick and I helped on another Whirlpool leaving black residue on silverware, look here: WDT720PADM1 Black residue on utensils but no resolution.

Jake
 
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