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Troubleshooting A Malfunctioning MaxxFan Roof Vent  

Question:

I live in a keystone Montana 2019. The bathroom maxxfan automatic lift operator mechanism I think is bad. When I turn the fan on the lid keeps opening and closing. Will not stay open. Please help. Thank you

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Expert Reply:

Since the lift operator is opening and closing on its own the circuit board must be malfunctioning and need to be replaced. The Replacement Printed Circuit Board for MaxxAir Manual Lift RV Roof Vents # MA10A21276K is the correct replacement circuit for your MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat - Manual Lift - 10 Speed - White # MA00-04000K.

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Kevin C

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