Replacement Circuit Board and Lift Motor For a MaxxAir 4751KS Vent Fan  

The correct replacement for your MaxxAir Circuit Board 10-04751ks is the following part: - Replacement Printed Circuit Board for MaxxAir MaxxFan Plus Roof Vents #MA10A04751KS As for the sensor wires, so long other wires are not damaged, I don't…

The 10B21275KE part #MA39FR replaces the 10-21275KE you mentioned as well so if you had an older model number you could use it in same application.

It does sound like you need a new circuit board for the 4951KS that you have based on what you described from your vent. So for that you'd want the part #MA10A04751KS and you'd be set.

I'm unable to find any reference to the part 2018-03-22 you'd mentioned. The MaxxAir Replacement circuit board you'd looked at, part #MA10A04751KS is a replacement for MaxxFan Plus roof vents. It works with models 4751KS, 4761KS, and…

The Replacement Printed Circuit Board for MaxxAir MaxxFan Plus Roof Vents #MA10A04751KS will fit your 4951KS model fan.

Thanks for reaching out! Since you have the 4951KS model MaxxFan roof vent you'll need the Replacement Printed Circuit Board for MaxxAir MaxxFan Plus Roof Vents #MA10A04751KS. The circuit board might look slightly different as far as the pieces…

The MaxxFan Deluxe Roof Vent w/ 12V Fan and Thermostat part #MA00-06200K has a max amp draw rating of 9 amps on startup. It's best to run a wire straight to the battery so you can ensure the correct gauge is used based on the amp draw and length…

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…

It sounds to me like your control board on your MaxxAir Fan Model 4751KS. The correct control board replacement for your unit is the Replacement Printed Circuit Board for MaxxAir Manual Lift RV Roof Vents #MA10A21276K.

The reason your MaxxFan 4751KS is making that clicking sound is because the operator mechanism is failing. Replacing it with the Replacement Operator Mechanism #MA10-20281K-1AF should solve the problem and put an end to the clicking.

If you already replaced the operator #MA10-20281K-1AF for your MaxxAir MaxxFan and it's working correctly to open but not close then the next part to replace would be the circuit board. Circuit boards are model specific so you will want to ensure…

Sounds like the circuit board of your MaxxAir 8751K is shorted out and would need to be replaced with the part #MA10A04751KS. If that doesn't fix it the solution would be a new lift motor with the part #MA10-20270.