What does Jandy aqua pure code 121 mean?

The Jandy AquaPure Code 121 indicates a "No Flow" error in the saltwater chlorination system. This typically means that the system is not detecting water flow, which can be caused by issues such as a clogged filter, a malfunctioning pump, or low water levels. To resolve the error, check the water flow to ensure the pump is operating correctly and that there are no obstructions in the Plumbing. If the problem persists, further inspection or professional assistance may be needed.