What It Means
Dry Heater / Low-Water Heater Warning
Likely Causes
- Heater tube not full
- Air trapped after refill
- Flow stopped while heater was enabled
- Sensor reading does not match actual water movement
- Pump prime lost
Next Checks
- Do not keep resetting a dry-heater warning
- Confirm the tub is filled to operating level and pump is primed
- Run the priming/purge workflow for the specific controller
- Verify filter and valve position
- Qualified service should inspect heater tube, sensors, and board if the warning returns
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.