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evanssusanAug 7, 2025
What to do if my Zodiac Control Unit shows a 'NO FLOW' error?
- SShelley CherryAug 7, 2025
If your Zodiac Control Unit displays 'NO FLOW,' it could be due to several reasons. The filtering pump may have stopped or failed, there might be air or gas in the cell, or the by-pass valves might be closed. Start by checking the pump, its programming clock, the filter, the skimmer(s), and the by-pass valves, and clean them if needed. Also, check the cable connections for the cell and flow controller. If necessary, replace the flow controller.