Staff Answer
May 19, 2026 - 01:34 PM
Verify Switch Orientation:
Check for a marking on the flow switch indicating proper orientation relative to the waterflow. Occasionally, a slight adjustment in one direction or the other will turn off the red warning light. Inspect for Debris: Remove the switch and inspect for debris, damage, and free movement of the mechanism. Note that debris is often dislodged by the removal process. Inspect the Cable:
Check the cord for damage or kinks, then disconnect and reconnect it. Note that while a damaged cord is theoretically repairable, repairs are generally unsuccessful. Manual Switch Test: If the Control Module can be powered on without the pump running: Remove the switch and then open and close it manually to verify whether the light will turn off. If the Control Module is only powered on when the pump is running: Rubber band or twist tie the switch closed. Reinstall the switch and test whether the light turns off. Results:
If the light goes "Off," you have a genuine "No Flow" condition and pump speed may need to be raised (unless a blockage is remedied). If the light stays "On," you likely need a new flow switch. Internal Component Failure:
If a replacement switch still gives a red light, contact the manufacturer to arrange for service and repair. The problem is most probably due to a fault or failure in the PCB or socket.
Check for a marking on the flow switch indicating proper orientation relative to the waterflow. Occasionally, a slight adjustment in one direction or the other will turn off the red warning light. Inspect for Debris: Remove the switch and inspect for debris, damage, and free movement of the mechanism. Note that debris is often dislodged by the removal process. Inspect the Cable:
Check the cord for damage or kinks, then disconnect and reconnect it. Note that while a damaged cord is theoretically repairable, repairs are generally unsuccessful. Manual Switch Test: If the Control Module can be powered on without the pump running: Remove the switch and then open and close it manually to verify whether the light will turn off. If the Control Module is only powered on when the pump is running: Rubber band or twist tie the switch closed. Reinstall the switch and test whether the light turns off. Results:
If the light goes "Off," you have a genuine "No Flow" condition and pump speed may need to be raised (unless a blockage is remedied). If the light stays "On," you likely need a new flow switch. Internal Component Failure:
If a replacement switch still gives a red light, contact the manufacturer to arrange for service and repair. The problem is most probably due to a fault or failure in the PCB or socket.
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