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Troubleshooting MaxxFan Deluxe Roof Vent w/ 12V Fan That Won't Turn Off  

Published 10/11/2019



Question:

I have a Maxxair 00-06200K MaxxFan Ventillation Fan with Smoke Lid and Manual Opening Keypad Control. There is no remote. At this point, the fan is running at low speed. I'm not able to activate any of the operations on the keypad. The fan will not turn off, nor can I operate the reverse or the speed controls on the keypad. I do know that the lid was open during a rainstorm. Could the circuit board have gotten wet? Thank you for any help that you can give me

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Expert Reply:

Thank you for the question! Would you be able to expand on your situation a little more so I can better help you? Just wondering if it isn't turning off when you press the power button or does it have to do with the thermostat (provided that your MaxxAir fan has one)? Also, which MaxxAir fan do you have installed?

If you can get me that info it will really help me to pin-point what needs to be looked at.

expert reply by:
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Jon G
Holly J. profile picture

Holly J.

10/11/2019

I have a Maxxair 00-06200K MaxxFan Ventillation Fan with Smoke Lid and Manual Opening Keypad Control. There is no remote. At this point, the fan is running at low speed. I'm not able to activate any of the operations on the keypad. The fan will not turn off, nor can I operate the reverse or the speed controls on the keypad. I do know that the lid was open during a rainstorm. Could the circuit board have gotten wet? Thank you for any help that you can give me

Jon G. profile picture

Jon G.

10/11/2019

Thank you for the extra info! Since you have the MaxxFan Deluxe Roof Vent w/ 12V Fan and Thermostat # MA00-06200K with the rain cover the only way that rain could have gotten to the circuit board is if it was a really intense storm with high winds that would have "pushed" wind into the vent. If it was just a typical rain storm then that wouldn't have been the cause. This vent has a built-in safety feature that locks up the circuit board if the voltage gets too high or low. If you disconnect the power for a few minutes and then connect it back to power that will release the circuit board from being locked and your vent will operate normally again. If rain did get to the circuit board or removing/restoring power didn't fix it then you do need to replace the circuit board with part # MA10A21276K.
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