Why is my ProMinent Water Pump not metering even though the operating indicator is flashing?
- JJennifer GrayAug 4, 2025
Several factors can cause this issue. The stroke length might be too low, so increase it using the stroke length control knob. Another possibility is trapped air in the liquid end. If there's no bleed valve, bleed the discharge side via a bleeder or relief valve. If there is a bleed valve, use it to bleed the pump.