Furnace Control Board Fuse Keeps Blowing
Furnace Control Board Fuse Keeps Blowing. Consequently, if the fuse has blown, it means you have a problem on hand for which you may require professional assistance. If the fuse does blow, then the control board has a.
Regularly tripping the fuse can be a fire risk because it indicates an electrical problem. I suspect a bad board but owner claims last guy replaced board. I did a recent service call and the 5 amp fuse in the circuit board on the furnace was blown.
Consequently, If The Fuse Has Blown, It Means You Have A Problem On Hand For Which You May Require Professional Assistance.
So i went and checked the fuse. It is true that the fuse on the control board might blow (short out) when the thermostat wire that is grounded out is energized. This is because when the wire touches the metal frame, it can deliver a higher voltage than the wire is designed to handle.
If The Fuse Doesn't Blow, Turn The Power Off, Then Add One Component Back In At A Time And Repeat The Procedure Until You Figure Out Which One Is Blowing The Fuse.
The voltage out of the transformer reads 26.3 volts. Fan only operation is running. Fuse in furnace circuit board keep blowing.
The Sequence Is Like This:
I've disconnect the c and y terminals on the air handler control board plus the cnt terminal which goes to the contactor without help. The best way to test which one may be causing the issue would be to perform a resistance check on frs1 and ls with the wires disconnected and from each terminals to the body of the switch. So i replaced the fuse, put the panel back on, and it didn't turn on.
I Suspect A Bad Board But Owner Claims Last Guy Replaced Board.
I am still popping fuses and reading over 24 volts. Its just being used for cooling right now. You need to find the root cause of the blown fuse on the furnace circuit board before you cause damage to the unit.
The Furnace Fuse Keeps Blowing.
The fuse is still blowing. It is a 5 amp fuse, the small automotive type. Why air conditioner keeps blowing fuse in circuit board?
Post a Comment for "Furnace Control Board Fuse Keeps Blowing"