The short answer
A Blomberg washer that will not drain is nearly always stopped by the pump filter behind the small flap in the plinth — a European feature that most owners never open. Coins, hairgrips and buttons collect there by design, and clearing it takes minutes. Have a shallow tray ready, because the drum will empty through that opening.
What you are seeing
- The drum is full of water at the end of the cycle
- The machine will not spin because it cannot drain first
- The pump is audible but the level does not fall
- The cycle stops and shows a drain-related indication
- Draining has become gradually slower over months
- A near-miss symptom: water outside the machine rather than inside, which belongs on the leak page
- Body: How much water is left and what the machine does next narrows this: The drum is full of water at the end of the cycle. The machine will not spin because it cannot drain first. The pump is audible but the level does not fall. The cycle stops and shows a drain-related indication. Draining has become gradually slower over months. A near-miss symptom: water outside the machine rather than inside, which belongs on the leak page.
Causes, most likely first
- A blocked pump filter — Why: the filter behind the plinth flap catches everything that comes out of pockets, and on a machine that has never had it opened it is the cause more often than everything else combined.
- An object jammed against the pump impeller — Why: a coin or an underwire that got past the filter housing stalls the impeller, which is why the pump hums without moving water.
- A blocked or kinked drain hose — Why: the hose is pushed against a wall when the machine is slid back, and this appears immediately after any work behind it.
- A blocked standpipe or sink trap — Why: the discharge point rather than the machine, and the sign is water backing up at the standpipe when the pump runs.
- A drain hose pushed too far into the standpipe — Why: this creates a siphon so the drum empties as it fills, and the machine never reaches its level and eventually faults.
- A failed drain pump — Why: real, and identified by a pump that is silent rather than humming, but it ranks last behind five causes that cost nothing.
- Body: Ranked for a machine with an owner-serviceable pump filter: First, A blocked pump filter: the filter behind the plinth flap catches everything that comes out of pockets, and on a machine that has never had it opened it is the cause more often than everything else combined. Second, An object jammed against the pump impeller: a coin or an underwire that got past the filter housing stalls the impeller, which is why the pump hums without moving water. Third, A blocked or kinked drain hose: the hose is pushed against a wall when the machine is slid back, and this appears immediately after any work behind it. Fourth, A blocked standpipe or sink trap: the discharge point rather than the machine, and the sign is water backing up at the standpipe when the pump runs. Fifth, A drain hose pushed too far into the standpipe: this creates a siphon so the drum empties as it fills, and the machine never reaches its level and eventually faults. Sixth, A failed drain pump: real, and identified by a pump that is silent rather than humming, but it ranks last behind five causes that cost nothing.
What to check, in order
- open the plinth flap and clear the pump filter, because this is the cause in most cases and needs no tools.
- with the filter out, reach in and turn the impeller by hand to feel for an object jammed against it.
- check the drain hose behind the machine for a kink or a crush point.
- check the standpipe or sink trap the machine discharges into, and listen during a drain: a humming pump means an obstruction, a silent one means power or control.
- Body: Start where the debris collects: First, open the plinth flap and clear the pump filter, because this is the cause in most cases and needs no tools. Second, with the filter out, reach in and turn the impeller by hand to feel for an object jammed against it. Third, check the drain hose behind the machine for a kink or a crush point. Fourth, check the standpipe or sink trap the machine discharges into, and listen during a drain: a humming pump means an obstruction, a silent one means power or control.
Checks you can do yourself
- Switch the machine off at its breaker and lay towels and a shallow tray in front of the plinth — Tools: towels, shallow tray — Time estimate: a few minutes
- Open the plinth flap, release the small emergency drain tube if fitted and let the drum empty into the tray — Tools: tray — Time estimate: a few minutes
- Unscrew the pump filter cap slowly, withdraw the filter and clear coins, lint and hair from it — Tools: gloves — Time estimate: a few minutes
- Reach into the housing with a gloved finger and turn the impeller to check it spins freely — Tools: gloves, torch — Time estimate: a few minutes
- Refit the filter fully tight, close the flap and run a rinse and spin to confirm the drain — Tools: none — Time estimate: half an hour or so
- Body: This is the classic owner job on a European washer: Switch the machine off at its breaker and lay towels and a shallow tray in front of the plinth (towels, shallow tray; a few minutes). Open the plinth flap, release the small emergency drain tube if fitted and let the drum empty into the tray (tray; a few minutes). Unscrew the pump filter cap slowly, withdraw the filter and clear coins, lint and hair from it (gloves; a few minutes). Reach into the housing with a gloved finger and turn the impeller to check it spins freely (gloves, torch; a few minutes). Refit the filter fully tight, close the flap and run a rinse and spin to confirm the drain (none; half an hour or so).
Safety first
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. The water that comes out of the pump filter can be hot if the cycle stopped part way, so let the machine stand before opening it. Broken glass and underwires are common finds in a pump housing, so wear gloves and use a torch rather than feeling blind. unplug-before-service
When to stop and call a technician
These are past the pump filter: The pump hums with a clean filter and a free impeller. The pump is silent throughout the drain step. Water backs up at the standpipe when the machine drains. The machine drains but will not spin, which is a different fault. The pump hums with a clean filter and a free impeller The pump is silent throughout the drain step Water backs up at the standpipe when the machine drains The machine drains but will not spin, which is a different fault
Nearest pages of the same kind
What this page does not cover
This page is generalized across every washing machine sold under the Blomberg name: it separates neither the freestanding machines from the integrated ones and one control generation from another, and it names no individual model. Where a family- or model-specific page exists it is linked here and it outranks this one for that machine; at present no page beneath this one narrows to a single family, so treat the ranking above as the brand-level pattern rather than a reading of your serial plate. For the other faults that turn up on this machine, start from Common Blomberg Washer Problems.
Related pages
- Common Blomberg Washer Problems
- Blomberg Washer: Abnormal Noise or Vibration
- Blomberg Washer: Does Not Clean or Dry
- Blomberg Washer: Controls, Display or Error Code
- Blomberg Washer: Cycle Will Not Run or Complete
- Blomberg Washer: Door, Latch or Seal Fault
- Blomberg Washer: Electrical, Fire or Gas Hazard
- Blomberg Washer: Not Heating
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
