Polaris P93 Owner's Manual page 15

The cleaner seems to be
performing less efficiently.
The brushes have become smooth or
the "wear" indicator shows.
Filter canister is full or dirty.
Floating cable is excessively coiled or
kinked.
Replace the brushes following the procedure in
Section 5.3, "Replacing the Brushes".
Clean the filter canister following the procedure in
Section 5.1, "Cleaning the Filter Canister".
Make sure the floating cable is spread out over the
pool. Ensure the cable is not too tightly wrapped
or coiled when storing. If the problem persists, lay
the cable straight in the sun to relax it and remove
kinks.
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