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I'm getting ready to start my second tank. I was wondering would their be any benefits in putting my dry rock in my existing sump for the next couple of weeks. Helping my cycle along.
Thanks,
Jose
The green light is in the lower portion of the furnace on the control module. As far as the copper coil/thermocouple you don't have one. You have a flame sensor located in one of the burner tubes. They usually get carbon build up, which you can clean with some sandpaper.
Without seeing the unit it is difficult to diagnose. Your unit might not even have a thermocouple could be spark ignition, if so could be the flame sensor