What It Means
Pressure Switch Open
Likely Causes
- Insufficient water flow
- Pressure switch failed or stuck open
- Air in the system
- Pump losing prime
- Clogged filter
Next Checks
- Ensure pump is running strong — listen for cavitation
- Check filter pressure and clean if needed
- Verify all valves are open
- Bleed air from system
- Jumper pressure switch to test if switch is faulty (professional only)
- Replace pressure switch if flow is confirmed good
Verify Before Repair
SplashLens is a field reference, not a repair guarantee. Confirm the visible code, exact model, and current manufacturer procedure before replacing parts, bypassing safeties, or quoting a customer.
SplashLens is independent and is not affiliated with Hayward or other equipment manufacturers.
Use SplashLens At The Pad
Manual error-code lookup works after the app has loaded once. AI scan features require internet and should be treated as a second set of eyes.