Hunter Technical Support Document

Why is my Hunter Freeze Sensor not disabling watering during freeze events?

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Troubleshooting
Check that the jumper tab was removed from across the two SEN terminals and also check that the sensor bypass switch on the controller is not in the Bypass position. It needs to be in the Active position to be able to utilize the sensor information. The sensor shuts the system down at 37 degrees fahrenheit.

 

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