Question about Pentair Mastertemp Heater
The system is 4 monthes old and has not had problems until now. It turned on by itself and will not turn off. The only lights are "Heat" and "Spa" and LED says 341 with up/down arrows having no effect. How can I turn the heater off?
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Posted on Jan 02, 2017
try cycling the power to the heater itself. Check for damage (pack rats, etc..). It sounds like you may have had a direct short. It could be a board problem or a transformer problem. If you're still getting the service heater light, check to see if any diagnostic LED is illuminated behind the board.
Posted on Jan 19, 2010
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