Leak went down the side across the bottom and rotted out pilot system severing gas tube. It was out of warranty but raypac said it was a know issue and offered a new heater... got lucky.
3 year old raypac heater stopped working. Looks like heat exchanger is leaking. But looks like plug from header is leaking and causing the problem. Anyone else seen this before. Home warranty won't pay for it and it is out of warranty with raypac.