Thermador Dishwasher Won't Drain
Dishwasher Won't Drain is usually one of a small number of specific, repairable causes — here's what to check and when it's worth calling a professional.
Common Causes
A drain line constrained by slab construction
With no underfloor route the drain has to rise and fall where a conventional house would run flat, and marginal falls cause the incomplete-drain complaint.
A clogged filter or drain line
The single most common cause of drainage and cleaning-performance complaints.
A failed door latch or control fault
Many dishwashers won't start at all if the door sensor doesn't register a full, secure close.
Local conditions that matter here
In an Eichler a new water line cannot go under the floor, because there is no floor to go under — the slab carries the radiant heating loop, and cutting it turns a kitchen job into a heating job. Lines here run overhead or around the perimeter, which is why the same repair takes longer on one street than on the next.
What You Can Check Yourself
Parts That Most Likely Need Replacing
Based on symptoms like this, these are the components our technicians check first. The exact part depends on your model and what we find during diagnosis.
In and around Menlo Park
Menlo Park — Pre-war and mid-century stock on large flat lots, with Sharon Heights on the hill and a steady stream of whole-kitchen remodels throughout. We also cover Portola Valley, Stanford, West Menlo Park across Silicon Valley.
ZIP codes we cover in Menlo Park: 94025, 94026
Most cases like this are fine to schedule within a day or two, though it's worth having looked at before it gets worse. If you're seeing a code on the display alongside this issue, our Thermador error code guide can help narrow down the cause before we arrive. Either way, our repair service covers same-day diagnosis and a flat-rate quote before any work begins.
Common Questions About Dishwasher Won't Drain
Can I keep using my Thermador appliance while this happens?
Will dishwasher won't drain go away on its own?
How much does this repair typically cost?
How long does a typical repair visit take?
Do you offer a warranty on the repair?
Do you service Thermador appliances in my area?
Still having this issue?
Same-day diagnosis, genuine OEM-compatible parts, warranty of up to 1 year.
*SubZero Repair San Mateo is an independent repair company and is not affiliated in any way with Sub-Zero, Inc., Wolf Appliance, Inc., or any of their distributors. We are not a factory service provider and specialize exclusively in out-of-warranty appliance repairs.