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  1. bigjonbird

    Pentair Mastertemp 400 control panel not receiving power.

    I went to this forum post Pentair Mastertemp 400-Blank Screen-No Power and came to the conclusion that my screen logic control board is not sending power to my heater. I jumped the heater at the panel inside the heater like it suggested and the heater kicked on. I couldn't get a tone or...