Pentair MasterTemp Pool Heater - Service Heater Light (MasterTemp 175, 200, 250, 300, 400)
42002-0024S Stack Flue Sensor - https://amzn.to/3GjIFA3 My Pentair MasterTemp 250 decided to stop working and give me the Service Heater light so I went ahead and fixed the most common issue with these pool heaters. Hope this helps you all solve your problem if you're experiencing the same thing. Chapters 00:00 - Intro (Turn off power) 00:24 - Remove Front/Back 01:01 - Remove Flue Sensor 01:44 - Check Sensor w/ Multimeter 02:40 - Install New Sensor 03:31 - Test System
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