I have had this Napoleon NPS40 since 08'. Last fall something happened, (power surge, unknown?). Killed my ignitor. Installed a new one. Also fried. The second I plug my stove in or turn surge protector on, the stove starts up. I'm guessing it is the combustion fan I am hearing. Auger will start and run if knob is turned. Combustion fan will not shut off after fire is out. What will I need to fix this to get it back to it's former burning days. I have a new ignitor waiting and have read posts about ignitor limit switch from Grainger with mounting bracket. What is the best way to diagnose this without paying someone $200 an hour, when I can fix myself. Thanks.