What It Means
High Limit Switch
Likely Causes
- Water temperature exceeded high limit (typically 135°F)
- High limit switch failed
- Same flow restriction causes as E02
Next Checks
- Allow full cooldown (20-30 min) before reset
- Verify water flow before restarting
- Test HLS switch resistance — should read 0Ω when cool; replace if open
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 Jandy / Zodiac 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.