That 3-amp fuse on the control board that you found blown and replaced feeds the 12V power to the Thermostat. So you had some sort of "surg" that occurred. Could have damaged the thermostat....hopefully not. Is it a 4-button thermostat? If yes, then it has a different "reset" than what is mentioned above. I have the 4-button reset procedure if you need it. Rook
When you get a chance to dance, or sit this one out......I hope you DANCE!
98 National Tradewinds 7370, powered by a 3126B 300HP CAT Turbo, Freightliner XC chassis