Replacement Circuit Board for a MaxxAir 4751KS to Correct the Lift Motor Continuously Running

Updated 07/28/2022 | Published 07/26/2022

Question:

My fan vent keeps trying to open when it’s fully open or keep closing when fully closed. All other functions work fine. Seems like a bad limit switch but I do not see any. Is this part of the control board?

asked by: Richard B

Expert Reply:

The issue you are having with your MaxxAir MaxxFan 4751KS is more than likely an issue with the circuit board (control board). The circuit board is what is telling the motor to run or stop.

The correct replacement circuit board for your MaxxAir MaxxFan 4751KS is the Replacement Printed Circuit Board for MaxxAir MaxxFan Plus Roof Vents # MA10A04751KS.

expert reply by: Scott S