What It Means
Flow Error / No Water Flow
Likely Causes
- Pump not running
- Flow switch failed
- Insufficient flow (< 20 GPM typically)
- Closed valves
- Dirty filter
- Air in system
Next Checks
- Verify pump is running and primed
- Check all valves are open
- Clean filter
- Minimum flow rate per spec sheet
- Test flow switch continuity
- Bypass flow switch temporarily to diagnose (pro only)
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.