Error Code
OH Spa Error — What It Means and How to Fix It
OH means your spa water temperature has exceeded the safe limit and overheat protection has activated. Turn off the spa and allow it to cool before investigating.
How to diagnose OH
- Power the spa off and let the water cool to under 100°F.
- Check that the cover was not left on during long pump cycles in hot weather.
- Inspect the temperature sensor for scale buildup and clean if needed.
- If OH returns, replace the temperature sensor or high-limit sensor.
Parts that fix OH
Contact our parts team to find the right fix for your spa.
Frequently asked questions
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