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Old 11-03-2016, 08:58 PM   #1
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Shower Exhaust Fan

My 04 HR has a rain sensor exhaust fan over the shower. When I turn up the thermostat the cover opens but the fan will not come on. Does any one have any ideas what might be wrong?
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Old 11-04-2016, 08:20 AM   #2
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Who manufactured the Fan? What Model is it? Does it have a remote?

Most have a number of switches and settings that have to be set correctly to work. Check all of the switch settings first. There might also be an internal on/off switch in the coach.
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Old 11-04-2016, 10:16 PM   #3
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MH is an 04 Holiday Rambler but not sure as to the model of the fan. I know that all of the switches are in the right position as it has worked and is not working now. It has a fuse and the fuse looks great. I will see if I can figure out the make and model of the fan
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Old 11-04-2016, 10:27 PM   #4
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It was manufactured by Fantastic Vent Corporation. Looks like I'll have to go on top the coach to find the model number.
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Old 11-05-2016, 01:10 PM   #5
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The cheapest way for $72.00 on ebay is the vortex ll fan but it has no remote control.
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Old 11-05-2016, 05:54 PM   #6
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I would suggest checking the electric motor. You can check resistance of the windings and also shorts to ground with a multimeter. I would also meter the fuse 1st. Just because it looks good means nothing.
If all that is good I would apply 12 vdc directly to the motor. If the motor runs that tells you that the issue is in the control circuit. Maybe one or more of the switches are faulty or connections.
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Old 11-05-2016, 06:08 PM   #7
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One more point to clarify.
You mentioned a thermostat. Which would mean it also has a temperature sensor. Which also could be a problem in the control circuit.
You said that turning up the thermostat does nothing.
If it's a bidirectional fan and it is set to exhaust (air out) turning up the tstat (warmer temperature) opens the circuit and the fan stops.
Something to check!!!
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Old 11-07-2016, 10:16 AM   #8
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if you have a Fantastic Fan they have Fantastic Customer service. very helpful. give Sharon G a call 800521-0298 ext 1147-34 she has helped me out on a couple occasions.
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Old 11-07-2016, 01:58 PM   #9
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If the cover raises, and the fan fails to operate, most lively the plunger switch is corroded or inop. When you are on the roof spray the switch with an electronic cleaner, then actuate the switch several times, this might work.

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