Error Code
HH Spa Error — What It Means and How to Fix It
HH means your spa high limit sensor has triggered, usually due to scale buildup in the heater element or restricted water flow.
How to diagnose HH
- Power down and let the spa cool fully.
- Clean the filter and verify good flow through the heater.
- Inspect the heater element for scale and descale if needed.
- Replace the high-limit sensor or heater assembly if the fault persists.
Parts that fix HH
Frequently asked questions
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