ok first of all great site lots of info! also yes i did a lot of research but i need help with my heater it's a teledyne laars lite 1 series i believe. natural gas. it looks pretty old but everything inside wires and such looks decent. i started out having a problem where the heater would fire up and run for about 5 or 10 mins then shut off and a minute or 2 later fire back up for another 5 or 10 mins and so on. i thought it could be the pressure sensor because the filter is good pump is brand new and there's good pressure to the pool. anyway after i finally bought the sensor it had been a couple months with hot weather so it went on the back burner until now i installed it and the heater doesn't do anything no pilot. i cleaned out the old sensor it actually looked really dirty and i put it back in and the heater is still dead. it has pressure, the gas is on, and so is the breaker. maybe the sensor would've solved the problem but now i have another. I'd appreciate any help and opinions on where i should start now. thanks! also let me know if there is any other info needed from me about my setup