Honeywell Programmable Thermostat Heater "fuse replacement" Questions

...Tried to turn the AC on and it won't work. WTF is the deal? I hooked it up differently and popped a fuse. Replaced the fuse, now nothing works...heater, AC, fan, nothing...any ideas? 7wires? wtf with ...

...on Sounds like you had a direct short on the 24v side of the transformer. Usually there is a inline fuse that will blow so it protects the transformer.. Turn power off to unit -Take doors off unit ...

...board turn the power off to the furnace. In the circuit board there should ba a small car like fuse usually 3 or 5 amps check the fuse it is probably blown replace the fuse with the same

...other than calling a technician just yet? Two things, first go up to the heater and check the fuse inside the heater, looks like a car fuse. If that is not popped, then go outside to your AC ...

...on the control panel of the heating-cooling unit that flashes once per second. There is a 3 amp fuse in the main circuit board. If this fuse is bad ,nothing will work but because of the batteries ...

and has been discontinued. none of the info sheets including a pdf shows a replacement battery. this thermostat operates off line voltage only. check for a control fuse or breaker on your heating unit

...be cold soon. i have a honeywell 5 in 2 prog. themostat thank you for your help There may be a fuse at the heating system that popped. Check on the heating system circuit board or an in-line

...the transformer for it. That transformer is located on or near the furnace. It can also be the fuse. I would recommend that you replace

...for a circuit board if the unit is 15 years old or newer. On this board you should see a S type fuse plugged in to it, a 3 to 5 amp fuse. Blue or amber in color. It is just like a fuse in your

...old thermostat with a new honeywell--the air, furnace, or fan will not go on You probably blew the fuse on the 24 volt control transformer. Usually the fuse is buried in the transformer windings and ...