Fuse for thermestat was replaced by repairman went back out after a few days he recommended that we replace thermestat and I did wher is fuse for thermestat

After repairman came out he told me that the fuse in thermestat was bad replaced it it went out after a few days than he said thermestat was bad replaced it the thermestat is still out wher is this fuse for the thermestat

Fuse usually located in furnace or air handler. That is the indoor unit. It could be on the circuit board or other locations in the unit. BE CAREFUL since the fuse has to be replaced with like same amp rate. The unit should be repaired to prevent further damage.