Have no 12 volt to the wall switch in the potty room that opens and closes the vent dome.
The upper 12 volt panel at the foot of the bed shows a 15 amp fuse that powers the bathroom ceiling lights and the potty room vent. That fuse is good. I'm not sure what "potty room vent" means on this fuse. Maybe it refers to the motor that makes the vent's fan blades spin and has nothing to do with the power supply for the motor that raises and lowers the dome???
When I manually raise the dome, the fan will not run either.
The vent in the shower room works fine. The small fuse that pushes up into the housing is fine; I exchanged them and no change.
I can't find the wiring for the wall switch or the fan motor on my schematics, but I am not very good at reading them.
Where do I look next?
Thanks, Dick
Sounds like could be a bad wall switch assembly, would suggest calling fantastic vent and tell them what year and brand of motorhome and they should be able to help
If it's the wall switch and it's the dual dial remote variable speed version, Fantastic (Dometic Attwood now) doesn't have them anymore - you have to buy an upgrade kit. Our remote open/close failed last summer (fan works fine otherwise) and after talking with Attwood (who now owns Fantastic Fan), they said we had to find a dealer who stocked the parts and buy from said dealer. They could not sell us the parts.
Oh, and they never heard of a "Foretravel". Sounds like Attwood has done their thing to Fantastic Vent customer service.... >:D
We're still searching for a vendor that has the kit (we couldn't find it online).
Michelle
Yup Attwood has destroyed another good company.
The wall switch seems pretty simple, toggle up to raise dome and down to lower it. The dome stops when it reaches the end of travel and the current drives high.
I removed the switch from the wall and could not get 12 volts across the terminals on the back. Should there be 12 volts there all the time? The other 12 volt devices (ceiling lights) on that circuit work fine.
Is there a circuit breaker or something between the fuse and the wall switch? If so where?
Don't know about the wall switch but have to comment about the Fantastic vent service. Called a few months ago when we found a crack in the inner casing where a screw had been over tightened. They sent a new casing for the cost of postage. Called them this week when I found the plastic dome had separated into two layers. Asked if I could silicone them back together and they said yes, but that they would send a new one as dome has lifetime warranty. Again, I had to pay postage. All this on a 12 year old vent on it's third owner.
Morning Dick,
When you checked for 12 volts at the switch were you reading from a switch pole to ground or switch pole to switch to switch pole?
Switch pole to switch pole. Switch in both positions. Good point, I will recheck.
I think 12 volt was fine. I took wires off switch to check it; was ok. When I put wires back the dome started working??? Now if I can just get the fan to spin. Fantastic vent tech support is not what it used to be. Had to leave message for return call next day. We'll see.
Dick On Mar 13, 2013 9:10 AM, "Dick S" <shanahand65@gmail.com> wrote:
A follow up note...
Tech support at Fantastic division of Attwood told me the most likely reason the fan doesn't spin is the plunger switch activated by the dome opening and closing because it is exposed to weather and gets corroded and rusty. Before I could check that two fellow travelers told me the same thing while we were playing pickleball!
Sure enough, that was the problem. Tech support is sending me new switches for both fans. There was no mention of cost for parts or shipping so I am encouraged about the support.
In the meantime I sprayed a bit of Corrosion X in there and worked the switch up and down. Fans working for now and all is well...waiting for new switches.