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yes you likely blew the fuse. it is likely a blade style/ similar to one in a car, located on a circuit board inside the blower compartment. BE SURE TO TURN POWER OFF AND LOCATE AND REPLACE WITH SAME THING!!
If your outdoor unit has a control board/circuit board, it will located at the outdoor units electrical panel where the line voltage electrical whip goes into the unit. Should be 2 screws that hold the panel/cover on. Turn off power, remove panel, and board should be visible.
Several questions: 1. What fuse? 110V at the furnace? Breaker at the house? Fuse on the controller board? 2. Does the ignitor work? Do you get gas ignition? 3. Does the exhaust fan come on? 4. Does the main blower come on?
Is the furnace fan (indoor fan ) running. If not the problem is with the inside unit. It supplies the control power to operate the entire system and has a control fuse on the circuit board. If it is running but not the outside unit then the problem is outside.
Hello, sounds like there is a short in the low voltage circuit. First inspect the wiring at the control board and make sure nothing is loose or touching metal. Also, inspect the wiring all the way to the outside unit and make sure it is not loose or touching metal on the outside unit. If you dont see anywires loose then you will need a meter to check the wires for continuity to the common terminal on the board with furnace and ac turned off.
If nothing is happening could be thermostat control wires cut? try using a jumper wire @ the furnace their will be a board with the letters R G W Y B try to jumper R to G the fan should come on. if not its in the controls of the furnace if fan comes on replace the thermostat. don't short the wires you will blow that small fuse. T
you say it keeps blowing the transformer? you mean circuit breaker? if it is the circuit breaker, have the wiring checked for a short, if no short do a ohm test on the compressor. it may have shorted out internaly.
Blank screen sounds like a fried thermosat. Abrupt outages can affect certain types of thermostats. Make a jumper wire and jump across R and G. See if you get any action from anywhere. If a fan or compressor kicks in you know you have a burned out thermosat...
Hi, Sounds like you have a short in the control circuit to me. Turn off all power going to the unit. Write down or otherwise mark the wires leaving the control board going to the thermostat. Remove them from the control board. Replace the fuse. Turn power back on and see if the fan still runs. If it does, check and or replace the heat limit switch that brings the fan on during the heat cycle. It may just need adjusted. If the fuse blows, I would think that the control board is probably bad. If it doesn't blow, Remove the thermostat. Leaving all thermostat wires open check them with an Ohm meter. There should be no continuity between them. Twist all the wires together at one end and ohm them again at the other end. You should have complete continuity on all wires. If the wiring checks out, down power the unit. Double check your wire colors and rewire the control board. With all wires open at the thermostat, turn the power back on. Touch the RED wire to the YELLOW wire. The Condensing unit should come on. Touch the RED wire to the GREEN wire. The fan should come on. Touch the RED wire to the WHITE wire. The heat should come on. Down power the unit. Replace the thermostat. Test unit. If the fuse has lasted ok but blows now it is either wired wrong at the Thermostat or the thermostat is bad. I hope I have helped. NOTE: If you can not understand these instructions. Call a licensed Heating / Air conditioning company.