Recently had a local pool guy out to repair my heater. Turns out the igniter was broken. He replaced it and all was well for a bit. Come the next week when I tried to fire the heater up, it wouldn't light and gave me an ignition lockout error. Having watched what the pool guy did before, I started poking around to see what I could find. Turns out the igniter has broken again. Before I drop $50 for the replacement part on Amazon, is there something else in my heater I should be checking since I've busted 2 igniters in short order? Or did I just get unlucky?