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Check System Indicator
The “CHECK SYSTEM” LED will alert you when the Aqua Logic detects any of the following conditions
that are abnormal and require attention for optimal operation of your pool.
• Inspect Cell -- for optimum operation, you will need to inspect the Aqua Logic chlorinator cell ap-
proximately every 3 months and clean the cell if necessary. The Aqua Logic will automatically remind
you when it is time and display “Inspect Cell, + to reset” as part of the rotating Default Menu. Clean the
cell (see instructions, page 29) and then press the “+” button during the “Inspect Cell” display to reset
the timer.
• Low Salt/Minerals or Very Low Salt/Minerals -- when the salt is too low the Aqua Logic will
generate less chlorine and the life of the cell is degraded. Check the cell and clean if necessary (see
instructions, page 29) before adding salt (see instructions, page 26).
• High Salt/Amps/Minerals -- the Aqua Logic will stop generating chlorine under certain high salt
conditions in order to protect the internal electronics from damage. The only way to lower the salt level
is to partially drain the pool and add fresh water.
• Water Sensor -- if the water sensor is either an open or short circuit.
• Air sensor -- if the freeze protection feature is enabled (Configuration Menu/ Filter Config.) and the air
sensor is either an open or short circuit.
• Solar Sensor -- if the solar sensor is either an open or short circuit.
• Chlorinator Cell Sensor -- if the chlorinator function is enabled (Configuration Menu/Chlorinator)
and the cell sensor is either an open or short circuit.
• Low Volts -- if the chlorinator cell voltage is too low.
• No Cell Power -- if no chlorinator cell power is detected on the printed circuit board.
• Check Flow Switch -- if the flow switch input is invalid.
• Cell Power Error -- if a chlorinator cell power error is detected on the printed circuit board.
• Cell Missing -- if the chlorinator is enabled but no cell is detected.
For helpful troubleshooting information on any of these issues, go to the Diagnostic Menu and then scroll
through the various items until you see the cause for the “CHECK SYSTEM” LED being illuminated.
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