I replaced the wall thermostat yesterday and came to find out it was not compatible with my unit. I went to put the old one back on and must have crossed some wires. Now I'm not getting any power to the thermostat. Im getting power to the transformer but no power from the transformer to the tstat. Don't want to be playing the guessing game and spending money on different parts. I s it possibly the transformer? I've reset the breakers and still nothing and I can't find a single fuse on the unit. Need help please

Check in the bottom door for a small 3 amp car type fuse hooked to the control board.

check in the bottom door for a small 3 amp car type fuse hooked to the control board.

Do you mean the door on the air handler

check in the bottom door for a small 3 amp car type fuse hooked to the control board.

Hey Josh I appreciate you taking the time to help me> I have the cover off the airhandler and there is no fuse present. Also the box on the house by the unit has no fuse. I've been looking for one but I believe there is not one. Am I looking for a car type fuse?

Yes at the furnace down stairs or in the attic where ever it is. Should have 2 doors the lower door will have the control board.