Pool heater gas fire lights up and turns off 10 secs later
Gas lights and turns off 10 seconds then 30 seconds later it relights then goes off again continously; water is circulating heater fan is on gas on and electric on i tested temp control and that is working >
Pool & Spa - Hayward - H Series Induced Draft Abg 100,000 Heater
Answers & Comments
Assuming you don't hear any banging noises, that cycle is by design. There is a fault. 2 possible causes are the ignition board is bad, or the ignition sensor is not returning a voltage indicating the flame is lit. Take this out and put the ignition piece on your stove flame. Check for voltage while on flame (DC millivolt setting on multimeter). Put one probe on ground other on sensor lead. If it doesnt have voltage this is bad. If you do, its possible your board is bad.