I've been reading these threads for a an hour now because I have a similar problem. I think the answer is in some of what I already read, but I'm still a little confused on some things. Anyways I've had my heater for 5-6 years now. I bought it used and it worked decent. It always was hard to start. I would have to push the on/off button a few times and finally it would start. Anyways, it finally quit starting the other day. So the Pilot light is lit and stays on. So I read the thread and used my multi-meter to test the millivolts coming from the Powerpile. When the pilot is lit and the power button off, it reads around 260 MV, when I press the on button it reads somewhere around 230 MV. So according to what I've read that is too low to start the heater. So I did the bypass test by Jumping the terminals on the TH-PP and the TH. As soon as I did that the heater fired up. So my question is since it started does that mean my powerpile is ok and strong enough (something else is wrong then), or does it mean that it is bad? Also by jumping this way, is that bypassing all safety switches? I ask because even if my power switch is off and I jump it, it still starts. Not sure if that is normal or not.
Where should I go from here?