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Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan

Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan

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Replaces the printed circuit board for your MaxxFan RV roof vent with powered lift and reversible fan. Works with both aftermarket and OEM models of MaxxFan Plus and MaxxFan Deluxe manufactured after 2010. 1-800-940-8924 to order MAXXAIR accessories and parts part number MA10A21275K or order online at Free expert support on all MAXXAIR products. Guaranteed Lowest Price and Fastest Shipping for Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan. Accessories and Parts reviews from real customers.
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  • Reviews (49)
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  • Videos (1)
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MAXXAIR Accessories and Parts

  • RV Vents and Fans
  • Roof Vent
  • Circuit Board

Replaces the printed circuit board for your MaxxFan RV roof vent with powered lift and reversible fan. Works with both aftermarket and OEM models of MaxxFan Plus and MaxxFan Deluxe manufactured after 2010.


  • Replaces the printed circuit board for your MaxxFan RV roof vent with powered lift and reversible fan
  • Works with both aftermarket and OEM models:
    • MaxxFan Plus: 00-04500K, 00-04700K, 00-04800K, and 00-04900K
    • MaxxFan Deluxe: 00-0700K, 00-07500K, 00-08500K, 00-08700K, and 00-08900K
  • Fan must be manufactured after 2010 for circuit board to fit

10C21275K Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents - Reversible fan

Replaces 10A21275K and 10B21275K

Item # MA10A21275K

Video of Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Maxxair RV Vents and Fans - Enclosed Trailer Parts - MA10A21275K

Michael: Hi there. I'm Michael with Today, we're going to take a quick look at the replacement printed circuit boards for your max air powered lift RV roof vents. As you can see, we've got two different boards here. These are the part numbers that you see on the screen there. Essentially, these are exactly the same thing with one small difference between them.

If you look at the circuit board, you can see they have almost all of the same components except this large black box here. This is actually going to allow you to work. Allows this board to work for your max air vents that are both exhaust and intake. So this other one that does not have that box is only going to work with your max air fans that are exhaust only. If your unit is able to bring air in as well as exhaust it out, you're going to need this one over here.If your unit is only capable of exhausting the air from inside your RV, this is the unit that you will need here.

Keep those part numbers up there for you to make sure that you are getting the right one. It's a pretty slight difference between them, but obviously it's going to have a big impact on their usability. We want to make sure that you're getting the product that you need, so just wanting to clear that up for you. Both of them are going to work with your max air power. It's just that functionality difference that you need to look out for.

We're going to make sure that you knew the difference and are going to get the right chip that is going to work for you. That is going to complete our look at the max air replacement printed circuit board. Again, I'm Michael with Thanks for watching.

Customer Reviews

Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan - MA10A21275K

Average Customer Rating:  4.7 out of 5 stars   (49 Customer Reviews)

Replaces the printed circuit board for your MaxxFan RV roof vent with powered lift and reversible fan. Works with both aftermarket and OEM models of MaxxFan Plus and MaxxFan Deluxe manufactured after 2010.


Drop in replacement for the original board. Worked first time! Delivery was faster than expected due to possible backorder timing, but showed up a few days later. Service from has always been excellent, thanks to the quality of the staff!


I received the correct products in the proper freight time. The tracking progress was very good and kept me up to date on the delivery. This was my first experience with You will be my first call on future needs.
Thank you.

Working perfectly!
Peter - 10/17/2021


We had originally bought the wrong part and that was our fault, but the customer service here is amazing! They helped us order the right part and we sent back the new one that was wrong for a full refund and recurved the right part and installed and it works perfectly! Thank you!!


Thank you for the prompt email
regarding the circuit board replacement for my MaxxAir Roof Vent. I must say that etrailer customer service has been fantastic with regards to this item. I completely understand that the lengthy delay in obtaining the item was the fault of MaxxAir and not etrailer. Your customer service regularly kept me informed of the manufacturer's shipping progress and it was very much appreciated. Anytime in the past I have ordered from etrailer I have received excellent service and this time was no exception. Thank you and your team again for the outstanding customer service.


The Maxxfan has been a completely disappointing experience! It worked properly for about a year before the first failure. I replaced the circuit board about one year ago due to the green light of death and the constant beeping. Extremely annoying when trying to sleep. This has been a reoccurring theme. The circuit board has a lifespan of approximately one year depending on humidity. The fan is installed in a NüCamp [email protected] located in central Texas. A well made circuit board should be able to handle the local humidity and the humidity of our breath will sleeping. Additionally, the power lift motor constantly leaks oil and creates a huge mess. I do not recommend this circuit board or fan.


Installed the board without any trouble. Had to find some insulated terminal disconnects at the hardware to connect up two of the the wires.


I purchased this circuit board because my fan would not work at all. After replacing the board it did work again. It does have a quirk though. Sometimes when setting up after travelling the fan will start up but then immediately close and start beeping and a light flashes and will start restart. I need to turn off the ac power, disconnect the battery, and then turn the ac power back on. The fan will then start and I reconnect the battery and it operates ok after that.

I asked the manufacturer about this strange issue. He said that he feels like the motor of the fan was pulling too many amps and it may be what took out your old PC board. He recommended a replacement motor that may help with the glitching of your new circuit: Item # MA10-20968.
-- Etrailer Expert Sierra K - 08/24/2021


I installed the new PC board in less than an hour. It works. I hope it continues to work. Time will tell. Maxxfan should have installed a more dependable PC board. Other Maxxfan customers have complained about the fan starting and stopping on it's own. The PC board the apparent problem with shorted circuits. Fingers crossed.


The product arrived way in advance of the expected date which was beneficial. Also it arrived in great condition and worked perfectly!


Haven't installed the part yet but the customer service was awesome ,and the part delivered earlier than anticipated. When I got off the phone after ordering with Drew my honest though was "why don't more companies provide customer service like that!". Hopefully the part works :).


Fast delivery the right part excellent shipment information
Thank you


After being told they wouldn't get one in stock till July, all of a sudden it was delivered today. I was able to install it myself and it actually works.


Disappointed, the fan control working but the vent door had to made manual only and you don’t take electric parts back.

The circuit board replaces the circuit board of specific MaxxFans with powered lift. If your fan did not have a powered lift lid the circuit board will not give the fan that feature.
-- Etrailer Expert Heather A - 06/28/2021


1 year later this part is still working fine. It was an easy order and their description of this Maxxair replacement board was right on.


This part worked perfect. Customer service was great. Thanks


I ordered this replacement board for a Maxxfan 7000 that failed. You can see the board was redesigned from the board that originally came in the unit. This concerned me at first, but after installing the new controller and hooking everything up, it worked perfectly with my remote. Open/Close, Fan in/out/circulate.

I even received the part sooner than anticipated (site listed part as on back order for two weeks - I got the part 4 days later).


Working great


My part was backed order, but as soon as it was available I was notified that it was being shipped. Excellent communications!!


I received exactly what I ordered before it was expected in perfect condition.


Did not take long to hook up quick service as far as shipping


Good transaction and I received the product as soon as possible, thank you.


have not had a problem with the fan since I replaced the circuit board


Très bon service merci


Perfect replacement for my burnt up circuit board. I had originally asked a local RV repair shop if they could order the part. I was told to replace the whole unit as the part I was requesting was not an option. The part took a little longer than wanted to arrive (likely due to demand), but it works perfectly. Problem solved and business lost at the local RV shop.


looks like a valid replacement. kyle was superb in placing the order and keeping me informed. hoping it all works when i install

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Manda E
Updated by:
Manda E
Employee Amanda M
Edited by:
Amanda M
Employee Michael B
Installed by:
Michael B
Employee Adam Y
Written by:
Adam Y

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