Troubleshooting A MaxxAir MaxxFan That Only Works On The Highest Speed Setting  

I recommend first checking the power coming to your MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat - Manual Lift - 10 Speed - White #MA00-04000K, it will need to be 12v. If it's not receiving 12v then you could need to increase the wire…

Sounds like you just installed a Lithium battery in your trailer which is causing the voltage to be higher than normal at 14 volts and causing the green light error you mentioned. What you would need is a new circuit board for your MaxxAir which we…

It seems you are on the right track. The Replacement Printed Circuit Board #MA10A21276K will indeed be the correct replacement circuit board for your MaxxAir fan. Your serial number indicates the 5100K model fan, which is fairly common.

This is more than likely a circuit board issue, and to alleviate the issue you'll just need to replace your unit's circuit board. If you have the MaxxFan Plus models: 00-04500K, 00-04700K, 00-04800K, and 00-04900K, or the MaxxFan Deluxe,…

Unfortunately, the Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan #MA10A21275K you ordered would not be the correct circuit board. The correct circuit board is the Replacement Printed Circuit Board for…

The correct MaxxFan Circuit Board you need is the part #MA10A21276K based on the numbers you listed. The part #MA10A21275K would not work for you.

If you have the MaxxFan Plus Roof Vent #MA00-04000K installed then it would make sense that the fan would continue to operate with the vent closed as this acts as a ceiling fan when the vent is closed. Should you have a different MaxxFan just let me…

Your MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat - Manual Lift - 10 Speed - White #MA00-04000K could be cutting off after 10 seconds for the following reasons: 1. Insufficient or fluctuating power. Your fan could be receiving less than 12v of…

It sounds like the control panel on your MaxxFan 6200K #MA00-06200K has gone out, which would explain the erratic functioning that you're describing. You can replace the circuit board on this unit with part #MA10A21276K. I've linked a short…

The first thing to check on your MaxxFan Plus Roof Vent w/ 12V Fan is still going to be the power and ground. You'll need to take a voltmeter like #PT89ZR and ensure that the vent is getting a full 12 volts of power otherwise it could only…

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

Aside from a slight change in the appearance of the crossbar (the WingBar Evo has some boxed edges as opposed to the completely smooth front of the AeroBlade) the biggest differences are the rubber strip on top of the crossbar and the weight…