Bosch Heat Pump Dryer not drying clothes properly
Hi, I have a Bosch heat pump ECOLOGIXX 7 dryer. I have to run the cycle at least twice for the clothes to be dried and sometimes a 3rd time if they are still slightly damp. The water tank is emptied after each use, the blue filter on it to is rinsed. The filters are hoovered after each load too. Any advice appreciated. Model is a WTW86560GB
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Bosch WTW86560GB heat pump dryer needs multiple cycles to dry
- The problem
- Bosch ECOLOGIXX 7 heat pump tumble dryer WTW86560GB was taking at least two cycles, sometimes three, to dry clothes properly. The water tank was being emptied after each use, the blue filter rinsed, and the lint filters vacuumed after each load.
- Likely cause
- Most strongly supported diagnosis was reduced drying efficiency due to restricted airflow or contaminated filters/sensors. The reply also suggested possible internal fluff build-up, moisture sensing problems, fan or condensate pump issues, or reduced heat pump performance if cleaning did not help. The exact fault was not confirmed.
- What fixed it
- Recommended action was to wash the door and lower fluff filters rather than only vacuuming them, clean the drum moisture sensor strips, and inspect any accessible lower flap, sump or heat exchanger area for fluff build-up. If there was no improvement after basic cleaning, further diagnosis by a suitably qualified appliance engineer was advised.
- Checks to try
- Emptied water tank after each use
- Rinsed the blue filter on the tank
- Vacuumed the filters after each load
- Wash door filters and any lower fluff filters in warm water
- Clean moisture sensor strips inside the drum
- Inspect accessible lower flap area, pump chamber, sump, ducts or heat exchanger area for fluff build-up
- Check whether laundry is going in too wet or washer spin performance is poor
- Parts or tools mentioned
- Warm water
- White vinegar or mild detergent solution
Safety: Isolate the appliance from the mains before inspecting internal areas. Further diagnosis should be carried out by a suitably qualified appliance engineer.
1 Answer
It does sound like the dryer is losing efficiency rather than a simple user setting issue. On Bosch heat pump dryers the usual causes are restricted airflow, poor moisture sensing, or reduced heat pump performance.
1. Check the filters properly rather than just hoovering Fluff and fabric conditioner residue can leave a film that a vacuum won’t remove. Wash the door filters and any lower fluff filters in warm water, dry them fully, then refit. If they look clean but feel slightly greasy, that can still affect drying.
2. Clean the moisture sensors Inside the drum, usually near the paddles/lifters, there are two metal sensor strips. If these get coated, the dryer can misread the load and stop too soon. Wipe them with white vinegar or a mild detergent solution, then dry them.
3. Inspect the condenser/heat exchanger area On self-cleaning Bosch heat pump models, fluff can still build up in the lower area, sump, ducts or around the heat exchanger despite the design. If airflow is reduced, drying times increase a lot. If accessible, check for fluff build-up in the lower flap area and around the pump chamber.
4. Check the load and spin speed Heat pump dryers are slower by nature, but if washing is going in very wet, or loads are mixed/heavy, drying can take much longer. Make sure the washer is spinning properly first.
5. If no improvement Then suspect a partial blockage internally, a faulty moisture sensor circuit, fan issue, condensate pump issue, or reduced sealed-system heat pump performance.
Please isolate the appliance from the mains before inspecting any internal parts. If it needs dismantling beyond basic filter/sensor cleaning, or any sealed refrigeration work, I’d recommend a qualified engineer.
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This answer was generated automatically by the WhitegoodsHelp AI Assistant. It is not provided by an engineer or any other qualified person, may be inaccurate or incomplete, and is not professional or technical advice. Do not rely on it. Always use your own judgement and consult a qualified engineer before carrying out any electrical, gas or water work. Use is entirely at your own risk. See our full Terms of Use.
SAFETY FIRST: READ BEFORE ACTING ON THIS GUIDANCE
Never work on a live appliance
Always unplug it at the mains before going near it with any tools.
Never attempt gas work
By law, gas appliances must only be worked on by a Gas Safe registered engineer. If your fault involves gas, stop and call a professional. Do not attempt it yourself.
Watch for sharp edges
Outer panels are smooth, but internal parts have sharp machined edges. Wear protective gloves and arm sleeves.
Water appliances can leak
Turn off the water supply before disconnecting any hoses.
Know your limits
If you are not confident testing or working inside the appliance, stop and call a professional.
AI guidance, not guaranteed
This response is generated automatically by the WhitegoodsHelp AI Assistant. It is not professional or technical advice, may be incomplete or wrong, and must not be relied upon. Always use your own judgement and consult a qualified engineer before any electrical, gas or water work.
This is general information only and is not professional advice. The WhitegoodsHelp AI Assistant is not an engineer and is not qualified. See our full Terms of Use.
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