[garr95]

Hi
I was given a Nordyne KG6RA gas furnace. After installing, I turned on and there was a low hum when the power got to it. I held the door switch closed so I could see. After a few seconds there was a spark and then blue smoke and everything went dead. I could not see where the smoke came from. The LED lights on the control board never came on, even before the spark. Any suggetions or advise? Thanks in advance.

[hvac1000]

Time to call the repair man for this one

[letmetellu]

On the circuit board there is a small fuse probably 3 amps or possibly 5 amps check to seeif this fuse is blowed, if it is don't replace it or it will just blow again. But it will give you a clue if the short is in the low voltage or in the high voltage. That fuse controls onlu the low voltage.

[garr95]

Thanks for the replies. I did replace the fuse first thing and still nothing. I have a repairman coming on Monday. It's a 4 yr old high efficiency furnace, and I got it for free, so if I have to spend a couple hundred dollars getting it going, it is worth it. My old furnace is 23 years old, still runs but not very efficient.

Thanks again