Washing machines deal with more than just water. Every cycle introduces materials that are notorious for obstructing pipes.
It emerged folded and slimy, but the lamination kept it intact. A school picture. A little girl, maybe seven, with missing front teeth and a nervous smile. Her eyes were dark, too large for her face. On the back, in faded marker: "Sophie, 2nd grade. Don't forget." laundry drain pipe clogged
Carefully pour a gallon of boiling water directly into the drain. Washing machines deal with more than just water
To diagnose a clogged laundry drain pipe: A school picture
"There's an obstruction," Dev said, frowning. "Looks like... a bundle. Fabric maybe. Right where the pipe elbows toward the street."
For minor clogs caused by soap scum or grease, heat is your best friend. Disconnect the drain hose from the standpipe.