What It Means
High Limit / Overheat Warning
Likely Causes
- Water overheated under cover
- Low flow through heater
- Temperature sensor or high-limit sensor issue
- Pump heat during long filter cycle
- Control relay stuck
Next Checks
- Do not enter overheated water
- Remove cover and let water cool if safe
- Check flow, filters, and pump schedule first
- Compare display temperature with a reliable thermometer
- Electrical board/sensor testing belongs to qualified service
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 Hot Tubs / Spas 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.