Hayward SUMHEAT HP5171DT3 Manual De Instalación E Instrucciones página 67

3. INSTALLATION AND CONNECTION (continued)
Time delay - The unit is equipped with a time delay of 3 minutes in order
to protect the control circuit components, to eliminate restart cycling and
contactor chatter. Thanks to this time delay, the unit automatically restarts
approximately 3 minutes after each control circuit interruption. Even a brief
power interruption will activate the restart time delay.
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