Hot Tub Error Codes
Hot tubs use a variety of spa electronics. One of the most popular manufacturers of hot tub equipment is Balboa Instruments now called Balboa Water Group.
The Balboa ML series contains some of the most advanced topside controls with a complete set of error messages and self-diagnostics. Other systems provide less comprehensive error messages, but still enough feedback to identify a particular issue.
Error messages may be similar across systems. Old style pressure switch systems would show a FLO or FLOW or FL error to indicate that the pressure switch needed calibration or that there was an obstruction or dirty filter in the line.
Error messages can help troubleshoot hot tub problems and get the spa running again.
Hot Tub Control Panels Show Error Codes and Messages
Hot tub controls usually display current operating parameters such as the current temperature, whether a pump is running or a light is on etc.. But when an error occurs, small combinations of letters may populate the display instead. Common messages include:
- warning of an overheat condition
- warning of a freeze condition
- pressure switch problems
- sensor issues
Common Balboa Error Messages and Error Codes
- pd: power supply issue
- OH, OHH: overheat or overheat sensor issue, spa will not heat
- Flo: water flow error, pressure switch error
- Cool: normal when first filling spa with cold water
- ICE: freeze condition- pumps and blower activated automatically
- Sn1: Hi-limit sensor issue
- HFL: flow issue, sensor temperature difference
- dr, dry: heater dry condition, pressure or flow not adequate in heater
- Pr: Priming mode when hot tub first started (usually lasts 4 minutes)
- Std: Standard Mode.
- Ecn: Economy Mode.
- SE: Standard-in-Economy Mode.
Common Gecko Error Codes:
- FLO, FLC: Pressure switch issue
- FrE: Freeze condition
- HL: Sensor hi limit
- Prr: Temperature sensor failure
- Prh: Hi-limit sensor failure
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