Circles / moves but does not clean
Where to look: Filter basket and impeller house.
Robot moves in circles or moves without cleaning — clogged filter or impeller debris.
Picture
Quick answers
What is wrong?
Robot moves in circles or moves without cleaning — clogged filter or impeller debris.
What you might notice
- Circles in place
- Moves but pool stays dirty
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 basket thoroughly.
- Remove debris from impeller house/cover. Place PSU so the robot can freely reach the pool.
- Correct algae/water chemistry if needed. If unresolved, request repair.
Parts (only if cleaning fails)
- None for a basic clean
Official references
- https://www.poolspa.co.th/wp-content/uploads/2025/07/PS-MANUAL-Robot-Pool-Cleaner-DOLPHIN-M700-English.pdf
- https://manuals.maytronics.com/intro/?pn=99996710-EU