Moves but does not clean well
Where to look: Filter basket and impeller housing.
Robot moves but cleaning is weak — usually a full filter or impeller debris.
Picture
Quick answers
What is wrong?
Robot moves but cleaning is weak — usually a full filter or impeller debris.
What you might notice
- Weak pickup
- Filter full
Can I fix this myself?
Usually yes for cleaning/clearing. Difficulty: easy · about 10-20 min. If unsure or the fault returns, use mail-in repair.
What you need
- Soft cloth
- Garden hose
Do this
- Clean the filter after each use until rinse water runs clear; reseat panels tightly with no gaps.
- Clear debris stuck in the impeller housing and check brushes/tracks for wrap.
- Check water chemistry (cloudy water and biofilm reduce pickup). Restart a full cycle submerged.
- If still weak with a clean filter, request repair.
Parts (only if cleaning fails)
- None for a basic clean
Official references
- https://solbadet.dk/wp-content/uploads/2025/01/Manual_ENG_Dolphin_Liberty_200_400_33-00835_836.pdf
- https://www.poolspa.co.th/wp-content/uploads/2025/07/PS-MANUAL-Robot-Pool-Cleaner-DOLPHIN-M700-English.pdf