Er-8: Ctrl Fault Hvs

Problem: Heater relay is on when it should be off.


Power surge, periods of low or high voltage, water on spa pack terminal block causing a short circuit, faulty relay.


  • Turn the spa off and on again to see whether the spa control recovers from the ER8 fault.

If the problem persists, you may need to replace the Temperature sensor. For further support or to order a replacement sensor call RotoSpa>

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