What It Means
Communication Loss
Likely Causes
- RS-485 data cable wiring fault
- Incorrect DIP switch addresses
- Power issue at controller
- Sub-panel or ancillary board offline
Next Checks
- Check RS-485 data cable from main board to sub-panels — verify wire order
- Inspect DIP switch addresses on all sub-panels (must be unique, must match programming)
- Cycle power to controller and all sub-panels
- Check all terminal block wire connections for loose strands
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.