Hi all I just bought a house with an inground pool and this heater setup. The heater worked fine last month and I recently noticed that the water was not consistently coming out hot and the pool was not reaching the set temperature. Further investigation revealed that my heater would run normally with all front panel LED's lit properly (service light was not lit) for about 5-10 minutes, then the heater would turn off, leaving the "Heat" LED unlit, and the "Service" LED lit. After about 5 minutes the heater would turn back on and run normally again and continue this cycle. I opened up the front access panel and looked at the burners. The pilot looks good and all of the burners are burning blue without any apparent issues. Also, the top vent is unobstructed. Any ideas as to what the heck is going on with this?