Ducane Gas Heater MELTED circuit board
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Ducane Gas Heater MELTED circuit board
Hey all,
I have a Ducane Model #: MPGA075B3A gas furnace. For the past several weeks I've heard a clicking sound from what I think was the blower motor, but it went away after a few minutes. I was going to replace it this month, but when I woke up this morning I smelled a electrical burning smell throughout the house and the blower motor (or is it the fan) would not shut off. I unplugged the unit and shut off the gas. Then I took off the covers and found that part of my circuit board had melted (see attached).
I've found a replacement board and blower motor which I'm going to change, but I want some advice on what could have caused this to melt. I don't want to throw parts at it and then have the same thing happen.
Any thoughts?
Thanks!
Mike
I have a Ducane Model #: MPGA075B3A gas furnace. For the past several weeks I've heard a clicking sound from what I think was the blower motor, but it went away after a few minutes. I was going to replace it this month, but when I woke up this morning I smelled a electrical burning smell throughout the house and the blower motor (or is it the fan) would not shut off. I unplugged the unit and shut off the gas. Then I took off the covers and found that part of my circuit board had melted (see attached).
I've found a replacement board and blower motor which I'm going to change, but I want some advice on what could have caused this to melt. I don't want to throw parts at it and then have the same thing happen.
Any thoughts?
Thanks!
Mike
#2
It looks the blower relay shorted. It may have been due to bad solder or cracked solder.
Once there is a bad connection... carbon is created and causes carbon tracking.... shorts.
There is a fuse on that board. I believe it should be a 4A..... ATC-4.
It looks like you have a 10A in it's place. That may have been part of the extensive damage problem.
Once there is a bad connection... carbon is created and causes carbon tracking.... shorts.
There is a fuse on that board. I believe it should be a 4A..... ATC-4.
It looks like you have a 10A in it's place. That may have been part of the extensive damage problem.
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jeez I never knew that about the fuse... that's the first time I've ever paid attention to the circuit board since I bought my condo.
Is it possible it damaged the blower motor?
thanks for the info
Is it possible it damaged the blower motor?
thanks for the info