The answer first
On the B Flasche FITW dishwasher line, a dishwasher that will not drain is usually holding food debris, not a broken motor. The single most common cause is the filter and the sump beneath it, and the second is a kinked or high-looped drain hose. What changes against the brand-generic answer is the order of the checks, not the list of causes.
The observations that matter on a FITW unit
- The drain phase is audible but nothing goes down — The pump is running against a blockage, which puts the fault in the path rather than in the motor. This is what an owner of a FITW dishwasher sees first.
- Water comes back into the tub after it has drained — A siphon problem: the drain hose is not looped high enough and waste water is returning.
- An error indication appears part way through the cycle — Many machines detect the failed drain and stop rather than carrying on washing in dirty water.
- NEAR MISS: the tub drains fully but the dishes are dirty — A cleaning fault, and the cleaning page is the place to start.
What it usually turns out to be on the FITW line
- A filter and sump packed with food debris — Ranked first, and it is the most common cause of every complaint this appliance produces. Debris that gets past a neglected filter settles in the sump, right where the drain path starts. The FITW build does not move this one: its rank is the same here as on the brand-generic page.
- A blocked waste trap or shared sink waste — The dishwasher is often blamed for a plumbing blockage that is not in the appliance at all. The tell is a sink that backs up alongside it.
- A drain hose without a high loop, allowing siphoning — Water drains and then returns. Common on a machine that has been moved or reinstalled.
- A control or timer fault that never calls for the drain phase — Last, and rare. It usually shows itself in other cycle behaviour as well.
The order that narrows it
- Listen during the drain phase — Audible and straining means a blockage; silent means the pump or the control. This single observation splits the list in half. The FITW layout is the reason it comes first here.
- Bail the water out and pull the filter — The condition of the filter and the sump beneath it answers the question most of the time.
- Check the waste connection under the sink — Especially if anything has been fitted recently; a knockout plug is the classic find.
Before you open anything
Safety
Isolate the appliance before any panel or hose comes off, and put towels down before you disconnect anything. A drain hose holds water along its whole length and will empty onto the floor the moment it is freed.
Models in the FITW family
Reference| Model number | Family key |
|---|---|
| FITW01 | b-flasche:dishwasher:fitw |
Where the owner side ends
The line is the pump. Call once the filter, the sump, the hose, the loop and the waste have all been eliminated, and mention whether the drain phase makes any sound at all — it is the fact that decides the first thing a technician looks at.
The nearest pages for the FITW line
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
