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Old 12-26-2017, 01:20 PM   #1
Senior Member
 
Brand: Thor Motor Coach
Model: Freedom Elite 29fe
State: Florida
Posts: 662
THOR #4656
Angry Another weird furnace problem

This is the continuation of the Christmas trip from hell, see (Transfer Switch Meltdown). The same night as the meltdown, in the middle of the night, no 110v thus we had to conserve 12v we were sleeping with the windows and vents open. Florida presented us with a quick but very heavy downpour lasting only a few minutes. We scrambled to close the windows and vents. Laying back down a ticking noise began. What now. It sounded like it was coming from the furnace, but we were not using the furnace. Thermostat switch was off. So, I found the appliance fuse and pulled it, the ticking noise stopped. Problem with that is now we have no hot water, and no refer and it was packed for a weeks trip. I'm beat so I go to sleep.

Our options now are to drive 540 miles north to go home. I put the appliance fuse back in so we would have the refer on the road. Since I was very familiar with the Atwood furnace and how the 12v flows through the system, I opened the furnace from the outside and pulled the 12v supply wire. The noise stopped. The noise was the fan running about 1/4 the speed it would normally run and stop a few seconds and start again, over and over. I suspect the control board got wet from that torrential downpour. We'll see. Update to follow when I get this one figured out.
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Old 12-26-2017, 09:41 PM   #2
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Brand: Thor Motor Coach
Model: 2016 A.C.E. 30.1
State: South Carolina
Posts: 189
THOR #5641
We have the same problems when it rains. I have pulled out the control board and used a hair dryer to dry it out so it works. I have just added silicone gasket around the door and and also where the door meets the little compartment that has the control board. I wanted to remount the control board on its side, but my area is to small to do that. I will have to wait till the next rain to see if my control board stays dry.
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2019 Fleetwood Discovery LXE 40M (Big D)
2016 Ford Focus, flat tow
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Old 12-26-2017, 10:48 PM   #3
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Brand: Thor Motor Coach
Model: Freedom Elite 29fe
State: Florida
Posts: 662
THOR #4656
I saw where the water was entering. It is the trim around the access opening. The water seeps around it and hits the control board. Solved that today. After furnace dried, it was back to normal.
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