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  1. How pool robot fault lights work

    What the lights, blinks and beeps on a robotic pool cleaner are, and why one maker's pattern means something different from another's.

  2. How to find your fault code in the maker's manual

    Where to find the list of fault codes for your exact pool robot, and what to do if the paper manual is long gone.

  3. Safe checks before you touch a faulty pool robot

    What to do first when a pool robot shows a fault: everyone out of the pool, power off, robot out of the water, then look.

  4. Power supply and cable fault lights

    What a light on a pool robot's power unit, or a power-related blink, usually points to, and which jobs to leave to a qualified person.

  5. Motor, track and wheel fault signals

    What a motor, track or stuck-wheel signal on a pool robot usually means, and what you can check by hand once it's unplugged.

  6. Filter full and blocked intake signals

    What a filter-full or flow warning on a pool robot is checking, and how to clear it by following your maker's manual.

  7. When the robot stops mid-cycle and the lights flash

    Why a pool robot stops partway through a cycle and flashes its lights, and what the usual causes are, from filters to heat to a stuck robot.