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Old 08-29-2020, 12:01 PM   #1
Dave In Chattaroy
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M.O.C. #26933
MaxxFan Troubleshooting

Hello,
I've got a Maxx Fan in the front living area that is not functioning correctly. When I hit the vent open button, the vent tries to rotate but in the closed direction. If I manually open the vent and then hit the fan on, the fan does not turn on and the vent closes. We have the exact same model fan in the bathroom so I have a pretty clear idea of how it is supposed to work.
What typically goes wrong with these units? and where should I begin with my troubleshoot?

Thanks in advance - Dave
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Old 08-29-2020, 01:24 PM   #2
bleedmichigan
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Did you check the rain sensor to see if itís wet or has something on it?
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Old 08-29-2020, 01:25 PM   #3
shovelhead86
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Max Air fan

I had the exact same problem you described. I discovered mice had chewed the wiring. The insulation on the Chinese wiring is vegetable based instead of petroleum based. Mice think it is food. Good luck.
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Old 08-29-2020, 01:42 PM   #4
Dave In Chattaroy
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I did not but I will check that out! Dumb question - but I assume that it is located on the roof and since I have vent covers, will they need to be removed to access the rain sensor?
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Old 08-29-2020, 01:43 PM   #5
Dave In Chattaroy
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On the chewed up wiring, where abouts did you end up finding the problem?
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Old 08-29-2020, 02:11 PM   #6
R.S.O'Donnell
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Ours in our "C" went berserk. Ended up being the circuit board. Everything is done from inside.

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Old 08-29-2020, 06:21 PM   #7
Steve Barry
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Same problem disconnected both ac/dc wait a few min. turn power back on. It works again
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Old 08-29-2020, 06:52 PM   #8
Dave In Chattaroy
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Got it fixed.....it was the rain sensor accessed from the roof. Cleaned the electrodes with some soapy water and dried them off with a paper towel and all is good!
Thanks for the suggestions - Dave
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Old 07-09-2021, 01:51 PM   #9
Bpcfd581
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Did you have to remove anything to gain access to the rain sensor? Was the sensor visible? I’m having the same issue right now.

Thanks
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Old 07-09-2021, 04:37 PM   #10
Dave In Chattaroy
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We have the Maxxair vent covers, so those had to be opened/ or removed. Then manually crank the vent open. You will see the electrodes inside. Good luck and hopefully it fixes your issue also.
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Old 07-14-2021, 02:28 PM   #11
Bpcfd581
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Unfortunately it wasn't the rain sensor, or the wall switch. Any other ideas? I'm think I'm going to do what the video says and hope for the best. Thanks for your help.
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Old 07-15-2021, 05:21 AM   #12
shovelhead86
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Quote:
Originally Posted by Dave In Chattaroy View Post
On the chewed up wiring, where abouts did you end up finding the problem?
Ceiling above the Light switch panel and in wall close to circuit breakers.
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Old 07-15-2021, 07:56 AM   #13
Bpcfd581
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So did you have to do a lot of demolition to fix it?
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Old 07-16-2021, 01:06 PM   #14
MARK A
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Quote:
Originally Posted by Dave In Chattaroy View Post
Hello,
I've got a Maxx Fan in the front living area that is not functioning correctly. When I hit the vent open button, the vent tries to rotate but in the closed direction. If I manually open the vent and then hit the fan on, the fan does not turn on and the vent closes. We have the exact same model fan in the bathroom so I have a pretty clear idea of how it is supposed to work.
What typically goes wrong with these units? and where should I begin with my troubleshoot?

Thanks in advance - Dave

Take the interior trim off so you can access the wires. Unplug the fan for a few minutes. Plug it in and try it.



Mark
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Old 07-16-2021, 04:00 PM   #15
mhs4771
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Don't worry, if you open and close the fan a few times the Opening Operator Mechanism will Explode and be non-functional anyway.
We have three MaxxAir Vent Fans and the Operator Mechanism has been replaced on all numerous times. I have to call and get more spares sent since I'm out of spares now. It seems it's cheaper for them to send me replacements that it is for them to fix the problem
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Old 07-17-2021, 06:14 PM   #16
shovelhead86
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Quote:
Originally Posted by Bpcfd581 View Post
So did you have to do a lot of demolition to fix it?
NO BASICLY JUST HAD TO REMOVE ONE CEILING PANEL and then replace it. was able to hook on to old wires and pull new through.
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Old 07-18-2021, 07:27 AM   #17
Dave W
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Originally Posted by mhs4771 View Post
Don't worry, if you open and close the fan a few times the Opening Operator Mechanism will Explode and be non-functional anyway.
We have three MaxxAir Vent Fans and the Operator Mechanism has been replaced on all numerous times. I have to call and get more spares sent since I'm out of spares now. It seems it's cheaper for them to send me replacements that it is for them to fix the problem



Gasp! You mean you don't like that pot metal gear and case assembly? Which reminds me ------need to find one
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Old 07-11-2022, 09:58 PM   #18
Ting3
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Voltage testing

How do you test for voltage on a Maxx fan?
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Old 07-12-2022, 08:41 AM   #19
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do you have a link to order the mechanism? Thanks in advance for your help!
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