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error Silvercrest
Error Code O H
Overheat - The spa has shut down due to water temperature of 43°C (110°F).
? What Causes This
High water temperature or faulty temperature sensor.
✓ How to Fix It
Remove cover and allow water to cool. Reset by pressing any button; contact service if no response.
Source: page 8 of the official manual
From the manual
This error code appears in:
Silvercrest Sfb 80 A1 Foot Spa