Have HVAC Questions? Ask an HVAC Expert for Answers
If you did not turn power off to system you may have blown a fuse. If this is a gas furnace open the blower compartment below the burners and check the furnace board. It should have a auto type fuse on the board. It will be a 3 and or amp fuse. Russ
If you can not find it give me model number of furnace. Russ
Do you still have lights on furnace. There is a five amp fuse inside top panel. Russ
You may be ok on fuse. How many wires to thermostat
On thermostat can you place a jumper across wires to see if heat works. Russ
When you remove front of thermostat. You have two wires on thermostat correct. Take a wire and touch between the two terminals and see if heat responds.
Ok I will be online for about 1 hour if I leave I will turn you over to another Expert.
Does the other heat zones work. Russ
I am going to output and turn you over to another Expert.