I have power to my boiler because the fan is running, but no power to the electronics. So no firing, no sensing and no heat. Are there fuses in there that could be blown? Unit is 2 years old.

Here is your manual and I believe there are fuses in the control circuit BUT you need to find out what caused it to blow since just replacing the fuse might leed to further trouble.

http://www.weil-mclain.com/downloads...ler_manual.pdf

The boiler is running ,are getting domestic hot water , but the circulators for heat are not coming on

The boiler is running ,are getting domestic hot water , but the circulators for heat are not coming on