hvac1000 I have a goodman gmh80703anab 70,000, my basement flooded overnight and the water got over the control board and I believe over the blower motor, it did not get to any other parts of the furnace. I am interested in working on it myself and have the time and was wondering if you had some direction for me. The unit fan will not come on and I do not believe the light on the board will come on either. Are there a few things I can try first to rule out the control board or the fan motor. Thanks in advance.

Joe Snyder

First remove all the electrical components that were damaged by the water and MARK all wiring so you know exactly where the wire go.
Make sure the parts are completely dry. Blow with compressed air at low pressure or put parts in the oven at 125/150 degrees to force the moisture out. Make sure all moisture is gone

Reassemble and try the furnace.
If it does not work you will be buying some expensive parts.

I`m not HVAC1000,but , does the control board have a fuse in it? If so may need replaced.When it has totally dried out it might work for a while,but you can bet that you are going to end up replacing some parts circutboards and motors are not built to withstand being Baptized, do it now or do it in the middle of the winter when you and familey are cold without heat, Goodluck

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Originally Posted by hvac1000

First remove all the electrical components that were damaged by the water and MARK all wiring so you know exactly where the wire go.
Make sure the parts are completely dry. Blow with compressed air at low pressure or put parts in the oven at 125/150 degrees to force the moisture out. Make sure all moisture is gone

Reassemble and try the furnace.
If it does not work you will be buying some expensive parts.

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Thanks a lot I will get on this. The only thing I can think of is just the board itself and a switch that works when the actual cover is screwed into place to make sure it doesn't run without the door or panel on. Then the blower motor itself. I will try this, thanks again. I am now busy trying to put a basin in and sump pump, heck of a job.

Joe