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Old 01-24-2021, 11:41 PM   #1
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Dash fan for heat not working

Just bought a 2015 Forest River Berkshire 40XL. Drove it home and the heat was working. Made a stop to show the coach to the grandkids. Ran the generator to stay warm. Turned off the generator and started the coach and we had no heat. The fan on the dash would not work. Any suggestions ( where is the fuse located for the fan?)
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Old 01-25-2021, 07:12 AM   #2
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WAG

Just guessing...first compartment from the front, drivers side.
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Old 01-25-2021, 10:19 AM   #3
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Here is a picture of the fuse layout in the compartment under the drivers window.
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Old 01-25-2021, 04:12 PM   #4
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Finfam5,
Here is the fuse you are looking for. Fuse #10. It is the front run bay under the driver area. it is a 25A fuse
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Old 01-26-2021, 08:05 AM   #5
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Dash fan for heat not working

I have a 2013 390RB and had the same problem. Turned out to be a bad splice in a wire bundle. Itís accessible on my coach thru the panel that lifts out of the top of the dash.

Iíve heard of others having this same issue so sounds like itís problematic for Berkshires.

Youíll probably have to remove some electrical tape in a bundle to get to it.
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Old 01-26-2021, 01:43 PM   #6
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Pull cover open on top of dash and reach in to the wiring harness plug going to fan heater switch. Make sure that it has not come loose from back of switch. Sometimes the harness is not supported enough from pulling on the plug and pulling it loose as you go down the road. For what it's worth dept. John
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Old 01-26-2021, 06:29 PM   #7
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I had a fuse in the fuse compartment blowing once in a while. Turned out to be seizing clutch on ac compressor.

It eventually seized completely and tore accessory belt.
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Old 02-25-2021, 12:25 PM   #8
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Checked the fuse and found it to be ok. I opened the hatch over the dash, with the blower switch activated, and ran my hand over the wiring harness from the switch to as far as I could reach. Nothing changed. I have not yet begun to unbundle the wiring. Before I do that is there any neutral loose wiring connections I should check first in another location? Also, just FYI, everything else works on the dash. I can also hear the vents operating when changing from defrost, vent, etc. I suspect those are moved by air pressure??
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Old 02-25-2021, 05:30 PM   #9
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Youíre right about the doors that control where the air goes. Thereís a small 12v vacuum pump in the compartment below the drivers seat.

Not sure where the grounds for the blower are. Maybe in that same compartment below the drivers seat.

My bad splice was such that it got bounced a couple of times by road bumps and the fan would operate intermittently.

Canít recall for certain the color of the wire that had the bad splice but think it was red from the switch and orange from the fuse block.

Sorry I canít be of more help.
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Old 02-26-2021, 03:40 PM   #10
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Before you start cutting into electrical tape and checking splices, you might want to get an automotive electrical test light and check the hot wire into the switch. If you have power there, it could be the blower motor or the switch. If there is no power to the switch then start working backwards to the fuse panel. This would give you a starting point and allow you to isolate where the problem is without spending hours chasing wires.
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Old 02-28-2021, 01:37 AM   #11
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Quote:
Originally Posted by Finfam5 View Post
Just bought a 2015 Forest River Berkshire 40XL. Drove it home and the heat was working. Made a stop to show the coach to the grandkids. Ran the generator to stay warm. Turned off the generator and started the coach and we had no heat. The fan on the dash would not work. Any suggestions ( where is the fuse located for the fan?)
Just an observation but when you say you have a 2015 40XL you may want to mention which 40XL you have...... there was a XL 40BH a XL 40QL and a XL 40RB that year.
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Old 02-28-2021, 09:29 AM   #12
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Sorry it is the RB. Secondly, thanks Dave6716 that makes sense.
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Old 02-28-2021, 09:46 AM   #13
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The ground wire on my MH is attached to tje blower motor using one of the four mounting screws for the blower. It is screwed into the plastic housing of the case and the screw came loose causing a bad ground. You may was to check the ground, common problem.
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