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Replacement Circuit Board and Lift Operator Mechanism for MaxxFan Plus 4700


i have a 2018 winnebago navion with maxxfan deluxe exhaust fan in bathroom. it has auto lid lift with only exhaust. lid not opening so think circuit board is probably bad. ideas on this and which board i need. old board says 4700k-board-v1.6? thank you


Expert Reply:

I'll start out by saying that based off the board you've mentioned it looks like you've got a MaxxFan Plus model 4700. The lift lid not opening on your MaxxFan is usually down to a bad board, and if the unit is beeping at you when you try to operate different functions, it's usually a sign that the board is bad. With that said, I would recommend testing the input/output voltage on the fan to see if it's operating correctly. If the fan operates normally, but the lid just won't open it's possible that the lift operator mechanism might have gone bad. If that's the case, you'd need the Replacement Operator Mechanism for MaxxAir MaxxFan Plus or MaxxFan Deluxe Roof Vents # MA10-20281K-1AF.

If the unit is beeping when you try to operate different functions you can replace the old board; the correct replacement board can be found with the Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan # MA10A21275K.

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