mastertemp 125

I have a Pentair Mastertemp 125 heater that I’ve for 2 seasons. It starts fires up, runs for 10-30 seconds and then quits, no codes. Checked gas pressure. Replaced high limit and high temp sensors, flame detector and igniter and still doing same thing. Even control board this morning...

Hello everyone, My name is Todd and I’m having an issue with my Pentair Mastertemp125 High Performance Pool heater not working. I have an above ground 21 foot round pool and I bought this heater in 04/2022 but it was backordered and I got it around the end of 08/2022 so it sat in my shed until...

I have a Pentair Master Temp 125 gas heater for my spa. It's been working good for a year, but recently it will not fire up. I hear a "buzz" sound 3 times then the "service heater" light comes on. I followed the troubleshooting guide, which determined the gas valve needs to be replaced. This is...