Need a little help..
The heater sparks (pilot light) , then ignites no problem.
But continues to spark (quick flash on the lcd screen "spk" along with audible sound of sparking) , about every 30secs.... (already ignited at this point)
Heater is raypak rp2100 266k btu
The little research I've been able to locate has mentioned pc board.. But being an older heater, don't want to spend a lot of that isn't it!
Thanks in advance