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  1. M

    Pentair MasterTemp 400 Max Temp not retaining temp

    Hi, My Heater is not retaining the max temp set by using the manually controls in the control panel. Generally, I’d fire up the heater using the iAquaLink contoller which would fire up the heater, heating to the max temp set. Now, I have to manually adjust the temp on the heater after using the...