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Old 10-02-2008, 08:33 PM   #1
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blower motor won't turn on


Hello,
I have a Rheem Criterion model RGDG-075AUER. Towards the end of last winter water from the bathroom entered a floor vent and ever since then there is a burning smell when the furnace is on. It's getting colder and I need to fix the unit. At this point the blower motor does not turn on and according to the flow chart on the back of the control board cover, this indicates a bad control board (as the voltage across blower motor, thick read and white wires is 0 volts AC). This is my first time troubleshooting HVAC and I wanted a second opinion before shelling out several hundred dollars to buy a new control board. Does this sound like it will solve my problem? Are there any other things I should look at first? Thanks in advance for your help.

GW
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Old 10-02-2008, 10:55 PM   #2
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blower motor won't turn on


Seems to be it but there could be other issues. I'd be worried about the motor possibly being bad if there was water involved. You might get a parts store to bench test the motor and the board. Process of elimination wil reveal the true culprit.
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Old 10-03-2008, 05:16 AM   #3
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blower motor won't turn on


Wow, how much water are talking about? Water would have to go through the bathroom supply air pipe into the supply air duct (all piping and ducting leak)then back to the furnace through the heat exchanger into the blower housing and get sucked into the blower! Did Katrina visit you?
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Old 10-03-2008, 09:03 AM   #4
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blower motor won't turn on


Yeah that got my attention to.

Bathroom registers are supposed to be in the wall to avoid water entry.
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Old 10-03-2008, 09:50 AM   #5
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blower motor won't turn on


Even a child with a hand held shower head could not have done that( any thing is possible, just not probable). Because all the water would have leaked from the duct and into basement floor!
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Old 10-03-2008, 10:03 AM   #6
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blower motor won't turn on


Quote:
Originally Posted by 1610 CUB View Post
Even a child with a hand held shower head could not have done that( any thing is possible, just not probable). Because all the water would have leaked from the duct and into basement floor!
Depends on how tight the duct system. But it is very possible for water to flow all the way from the furthest end of the trunk to the furnace.

Seen it happen too many times.
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Old 10-03-2008, 11:06 AM   #7
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blower motor won't turn on


My daughter was home alone and the toilet overflowed. When I got home (about 5 minutes later) there was about 2 inches of water on the bathroom floor, water was seeping out of a joint in the ducting into the basement and out of the bottom of the furnace. It didn't take a child with a hand held shower head, just poor planning on whoevers part that installed the vent on the floor and a backed up toilet. BTW, the vent in the bathroom is on it's own duct and angles pretty sharply straight into the unit. At any rate, I demo-ed the landing that leads to the basement and installed a wall vent so there won't be any issues in the future but it was a mess.

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Old 10-03-2008, 04:01 PM   #8
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blower motor won't turn on


Blanker, I meant no disrespect It just sounded out there. I'm sory the flood hurt the house and the furnace... j
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