Chris Bryant wrote:
Before replacing the board, look at the wiring to the valve, and the eco to check for shorts.
Thanks Chris. I started checking the ECO as you suggested, and found that it was all loose. The plastic holder that holds it tight to the tank was broken. I just decided to buy a replacement ECO/Thermostat kit for $12 bucks. Installed that and a new 2 amp fuse, and it seems to be working just fine. Fired right up and left it run for about 15 mins.
Could it being loose like that make it blow fuses? What does ECO stand for and what does it do?