Flotec Pump Cycles On/Off in Auto: Electrical or Relay Fault

Check Pump Start Relay and Controller Wiring

If the pump runs fine manually but cycles erratically in auto, inspect all electrical connections at the pump, relay, and controller. A failing pump start relay (contactor) is a common cause. Test with a multimeter or have an electrician verify. Replace the relay if contacts are pitted or coil is weak.