Not handsome so I sure must be Handy!
Chandler Ede posted an answer for this Sta Rite 333 Btu Natural Gas Heater Maxetherm Sr333na:
"High limit switch is bad or open or pressure switch is bad."
Chandler Ede posted an answer for this Sta Rite Sr333lp - Max E Therm - Pool & Spa Heater - Dual Electronic Iginition Lo - Nox - 333,000 Btu - Propane Gas:
"high limit switch open, look for a reset button between the two leads going to it. Check..."
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