Pumps and Hydraulics
Fix no-start, no-prime, noisy, weak-flow, and runtime problems by checking controls, water, air, pressure, and stop conditions first.
- Fix no-start, no-prime, noisy, weak-flow, and runtime problems by checking controls, water, air, pressure, and stop conditions first.
- Current observations, recent test results, and equipment or label details this playbook asks for.
- The issue involves electricity, gas, structural movement, missing drain covers, contamination, or work outside owner-safe inspection.
For a pump that will not start, check controls and power once, then the prime path. Repeated trips, burn smell, shock, overheating, or dry running means stop.
Pump and Hydraulics Boundary
For a pump that will not start, check controls, water, air, valves, pressure, and visible leaks first. Stop when the next move is electrical, internal, or dry-running.
- ✓ Check water level, baskets, pump lid seal, valves, filter pressure, returns, and obvious air leaks.
- ✓ Record the pump model, controller error, RPM or schedule, and clean filter pressure.
- ✓ Shut the pump off if it loses prime, runs dry, overheats, or cavitates hard.
- ★ Opening motor or drive housings, energized wiring, bonding, or internal motor work.
- ★ Replumbing pressure-critical sections or redesigning equipment hydraulics.
- ★ Energized testing or controller diagnostics beyond the manual's owner checks.
- ⚠ Breaker or GFCI trips again after one reset, wiring smells burned, or the housing overheats.
- ⚠ You feel shock or tingling, or you see wet electrical equipment.
- ⚠ The pump will not hold prime and would run dry while you keep testing.
Check command and power
First decide whether the pump is being told to run and whether power stayed on.
Give the pump water
A pump cannot diagnose itself if the suction path is starved or full of air.
Split the fault with pressure
Pressure tells you whether the pump is starved before the impeller or blocked after it.
Read noise, heat, and bubbles
The visible symptom usually tells you which side of the system to inspect next.
Set runtime after flow is stable
Runtime is the result of a working system, not the first fix for a broken one.
Questions ? (2)
How do I choose pump runtime by context?
Start with enough runtime to keep skimming, sanitizer mixing, and clarity stable. Add runtime for heat waves, heavy bather load, debris, vacuuming, cover-off periods, or vacation recovery; trim it only when the pool stays stable.
When should I use the pump energy calculator?
Use it when you are comparing the cost of two schedules or pump speeds. Use this page when you are deciding which runtime actually fits the pool's job.
Ressources (12)
Manufacturer manuals and model-family index
Use the family index to narrow a pump to the correct document set before changing RPMs, priming, or automation logic.
Pool pump energy cost calculator
Use the calculator when you need the dollar cost of a schedule, speed, or horsepower choice.
Weekly maintenance routine
Use the routine when pump runtime is part of the normal weekly operating cadence.
Manual library
Open the manual library first when you want source PDF links for pump manuals and other referenced equipment guides.
DOE efficient swimming pool pump guidance
DOE explains how pump efficiency, hydraulic resistance, and filter sizing interact.
Pentair IntelliFlo3 and IntelliPro3 user's guide
Registry-backed source-hosted manual for Pentair IntelliFlo3 and IntelliPro3 setup, schedules, and fault context.
Pentair SuperFlo VST installation and user's guide
Registry-backed source-hosted manual for Pentair SuperFlo VST installation, controls, and owner checks.
Hayward TriStar VS/XE family brochure
Registry-backed source-hosted brochure for Hayward TriStar variable-speed family context.
Hayward XE Series pump technical training guide
Registry-backed source-hosted guide for Hayward XE-family variable-speed pump service context.
Hayward VS Omni brochure
Registry-backed source-hosted brochure for Hayward VS Omni and related Omni pump variants.
Jandy VS FloPro installation and operation manual
Registry-backed source-hosted manual for Jandy VS FloPro pump setup and owner operation.
Jandy ePump installation and operation manual
Registry-backed source-hosted manual for Jandy ePump pump setup and owner operation.
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Educational guidance only. Verify labels, manuals, local code, and site conditions before acting. Stop for electrical, gas, structural, drain, drowning, injury, emergency, or chemical-mixing risk.