Controller shows E17 and pump stops unexpectedly; may coincide with low flow

Safety first: Turn off power and relieve system pressure before opening any part of the plumbing.

• Check and clean filter: Backwash sand or DE filters, or clean cartridge filters to restore normal pressure and flow.
• Inspect suction and return: Ensure valves are open and lines are not obstructed. Clean skimmer and pump baskets.
• Bleed air: Open the air relief valve on the filter to remove trapped air while the pump is running.
• Inspect sensor: If equipped, check the pressure switch or flow sensor tubing and wiring to the Franklin Electric controller. Replace a faulty sensor that trips despite good flow.
• Reset and test: Clear E17 and observe system pressure and flow. Persistent low-flow trips indicate a hydraulic issue that must be corrected.