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Our heater will fire up and come to temperature but will not stay at temperature. We have to go out and turn it back on. Any suggestions?

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What heater?
make & model?
What do you mean exactly... when you say... go out and turn it back on?
What will the difference in temperature be from actual water temp, to set temp on heater?

Posted on Apr 07, 2015

Testimonial: "We have a Pentair MasterTemp 250 MSTRTMP 250 is the Model MN25 03/07/08 180 is the Serial number So the heater turns on and runs if you turn it on. It reaches temperature and the naturally shuts off. When the temperature lowers due to cooler weather the heater doesn't recognize and turn itself back on to maintain the desired temperature. We have to go and manually turn it on again ourselves."

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