What It Means
Pressure Switch Open
Likely Causes
- Low water flow
- Pump not running
- Closed valves
- Filter pressure too high
- Pressure switch malfunction
Next Checks
- Confirm pump is operating
- Open all water valves fully
- Clean or backwash filter
- Check and clean pump basket
- Test pressure switch — verify 24V signal when flow present
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 Pentair 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.