First check that the filter basket is clear and the robot is fully charged.
First check that the filter basket is clear and the robot is fully charged. The most common causes of poor coverage are: wrong cleaning mode for the pool shape (use Auto mode for irregular pools), or the robot stuck in a repeated straight-line pattern due to a sensor calibration issue that a restart usually fixes.
Adaptive Path vs Auto Mode: What’s the Difference
Several customers report they cannot find the “Adaptive Path” option. This is not a separate mode — adaptive navigation is built into Auto mode on the Scuba S1. Select Auto mode in the app for irregular, kidney-shaped, or deep pools. Floor mode uses a fixed grid pattern and may miss corners in non-rectangular pools.
Robot Goes Back and Forth in the Same Spot
This is a known pattern when the S1’s sensors fail to map a new area, often caused by a smooth tile surface or a very curved pool bottom. Fix: (1) Remove the robot from the pool. (2) Hold the power button for 10 seconds to reset. (3) Check for the latest firmware update in the Aiper app. (4) Re-enter the pool in Auto mode for the first run to re-map.
Robot Only Cleans 1–2 Feet of the Waterline
If the S1 is running in Wall mode but not reaching the full wall height, it is likely not fully charged. The S1 requires a full charge to generate enough suction and drive power for wall climbing. Charge fully (until LED turns solid green) before placing it in the pool. Deep pools (8+ feet) may require multiple cycles to fully cover the walls.
Filter Basket Full or Clogged
A partially blocked filter reduces suction power and coverage. After every 2–3 cleaning cycles, remove the filter basket, rinse it under a garden hose, and inspect the mesh for tears. A torn 180 μm mesh significantly reduces debris capture. For fine algae and dust, upgrade to the optional 3-micron micromesh filter (must be ordered separately via support ticket).
Irregular Pool Shapes and Pebble Finishes
Kidney-shaped pools, pebble aggregate finishes, and pools with steep slopes all create more unpredictable paths. Use Auto mode rather than Floor mode. The S1 does not support custom zone mapping as of firmware v2.x. If coverage remains poor after several runs, collect the serial number and submit a support ticket for a technical review.