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Troubleshooting MaxxFan 4700 Series, 4700K

Question:

I Have A Maxxfan 4700k Series Fan That Wont Open Or Close With The Remote. It Started After A Storm With Lightning . The Fan Works Fine But Wont Open Or Close Unless You Do It Manually . It Beeps When You Push The Button To Open. Serial Number 2013-4700k-A0856 . Thank You For Your Help

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Expert Reply:

You reported that you cannot use the remote on your MaxxFan 4700K to put the vent cover up and down. Let's troubleshoot. Put some new batteries in your remote. Ensure that the display comes on. Verify if your vent cover now works. Verify if other remote functions work. If it is not your remote we can consider the following service parts. First lets perform a reset. Disconnect the 12volt power source from the fan circuit board for two minutes then reconnect and test again. Many times you will get error beeps if the circuit board can't work properly. Check the other parts. The operator mechanism can be stripped out or jammed. The lift motor can be burnt out and not work, or perhaps you can tell the motor is running but not turning because it is stripped. 1. Replacement Circuit Board # MA10A21275K for exhaust and inflow fans 2. Replacement Circuit Board # MA39FR for exhaust only fans 2. Vent Cover Lift Motor # MA10-20270 - Motor can be stripped and will not lift cover. 3. Operator Mechanism # MA10-20281K-1AF - Gearbox between door lift motor and lift arms. Can be stripped or jammed. I have included a parts view to help you troubleshoot your fan. Frankly, it could be something else. Perhaps a tree branch was laying on top of the vent lid and when you tried to put it up everything was bound up and stripped the operator mechanism and lift motor. If it turns out to not be serviceable you can replace it with the MaxxAir # MA00-04751KSX Power Roof Vent with 4-speed fan

MaxxAir Vent Frame Assembly Detail
MaxxAir Vent Frame Assembly Detail
(click to enlarge)
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