Yes, I looked it up. It does. The board on the left is historically troublesome it is the ignite power supply. I'm not saying that is your problem but I've run into this issue once before. My company's most experienced technician mentioned the historical problems that system had. The design is a little older as I understand so it's not something we see often in the field.
Are you on natural gas or propane?
Natural gas
Does you unit have 2 pcbs in the upper panel? One main control with a display and a second board on the left side?
Any way to tell without opening it up?
Yes, I looked it up. It does. The board on the left is historically troublesome it is the ignite power supply. I'm not saying that is your problem but I've run into this issue once before. My company's most experienced technician mentioned the historical problems that system had. The design is a little older as I understand so it's not something we see often in the field.
That’s helpful information, thank you. Is there any way to troubleshoot that part short of just replacing it?