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Replacement Key Wall Control For MaxxFan Plus and Deluxe - 4 Key

Replacement Key Wall Control For MaxxFan Plus and Deluxe - 4 Key

Item # MA00A03550K
Our Price: $23.06
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Replaces the 4-key wall control for your MaxxFan Plus and Deluxe models. 1-636-242-8824 to order MAXXAIR accessories and parts part number MA00A03550K or order online at Free expert support on all MAXXAIR products. Great prices and Fastest Shipping for Replacement Key Wall Control For MaxxFan Plus and Deluxe - 4 Key. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (85)
  • Q & A (0)
  • Videos (1)
  • Photos

MAXXAIR Accessories and Parts - MA00A03550K

  • RV Vents and Fans
  • Roof Vent
  • Operator Parts
  • Wall Control
  • MaxxFan Deluxe
  • MaxxFan Plus

Replaces the 4-key wall control for your MaxxFan Plus and Deluxe models.


  • Replaces the 4-key wall control for your MaxxFan Plus and Deluxe models
    • MaxxFan Plus (4751KS or 4951KS)
    • MaxXFan Deluxe (8751K or 8951K)
  • Allows fan control from convenient wall location
  • Turns fan on or off
  • Opens or closes vent lid
  • Easy access to ceiling fan mode
  • Jack port is designed to accept RJ-11 style cable

00A03550K Replacement Key Wall Control For MaxxFan Plus and Deluxe - 4 Key

Video of Replacement Key Wall Control For MaxxFan Plus and Deluxe - 4 Key

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 - MA00A03550K

Today, we're going to take a quick look at the Replacement Key Wall Control for MaxxFan Plus and Deluxe. This is going to be a 4-key wall control for your MaxxAir fan. It's going to give you your Fan Off, On, your Vent Open, and Close controls so you can easily control your vent and fan from across the room. You don't have to get up and operate it every time. We'll also have little covers for our hardware here. We get two screws to get this mounted onto the wall.

On the back of that mount, you'll see our connection to power there. It's just going to be that little plugin, and then these two holes are going to be our mounting holes. So, whenever you have your screws in place, you'll actually have the little black portion behind it. The little connector in between is just for shipping, but, basically, that just connects into that little opening at the top so it provides a secure hold on your wall mount there.Again, we'll have all four of those controls so we can easily operate our MaxxAir fan from wherever we are. This is going to work for the MaxxFan Plus, Part numbers 4751KS or 4951KS, and the MaxxFan Deluxe, which is going to be 8751K or 8951K.

This is going to be about 3-1/8" long, about 2-3/8" wide, and about 1-1/8" deep.That's going to do it for our look at the Replacement Key Wall Control for MaxxFan Plus and Deluxe.

Customer Satisfaction Score:

Customer Reviews

Replacement Key Wall Control For MaxxFan Plus and Deluxe - 4 Key - MA00A03550K

Average Customer Rating:  4.6 out of 5 stars   (85 Customer Reviews)

Replaces the 4-key wall control for your MaxxFan Plus and Deluxe models.


Prices are competitive, products are as described, shipping is timely, and tracking is accurate. etrailer kept me advised on the status of my order every step of the way.

The wall control is a major improvement over the older model, it was easy to install. Depending on your trailer the existing hole may have been created by a hammer or gnawed into the wall by the manufacturer. In that case you might have to build some kind of bracing. Otherwise, it is a 10 minute job.

Still working fine, still better than the original
Walt - 02/12/2023


Max air switch works great. The on line service was easy to use and shipping was fast. Would highly recommend etrailer

Don’t have the RV I bought the part for but it still worked good
Richard - 05/15/2023


It must be wired wrong. I push the vent open and nothing, I push vent close and it opens and turns on the fan. I push fan on and it closes the vent, but fan stays on. I push the fan off and it closes the vent and turns off the fan. Not sure what is going on. Not pleased.

It does sound like something strange is going on. I would like to reach out to the manufacturer however I know that they will want to know what model of fan that you have is . Can you let me know?
-- Etrailer Expert Jenny N - 03/30/2023
sorry for the delay in response. here is the model and serial number: Model: 4951KSC Serial: 2110-4951KSC-0994
-- comment by: Greg - 04/06/2023
I heard back from the manufacturer much quicker than I expected. To them it sounds like the wall control is faulty. They suggested to make sure that the RJ-11 cable is plugged in all the way in the wall control and to clean the terminals on the wall control.
-- Etrailer Expert Jenny N - 04/06/2023


The wall control came fast and installation was easy. Just snap off the cover and plug a cable in the back. I’m hoping that this new control, fixes the problem with the fan opening and closing in 2 seconds. We couldn’t get the fan to stay open and operating.


We ordered a product and received it promptly. Unfortunately it was not a match to what we needed, We sent a message to etrailer and promptly got a message back, continually sent messages and photos back and forth to solve issue. They said they could not match the exact product and gave us recommendations along with how to return the product.. I would totally recommend this company and will be first on my list to buy their products.


Prompt and pleasant service. We haven't installed the parts yet, so not sure it's the fix.


Etrailer service is good but product didn’t work.

Well that is not good! Lets get you one that works.
-- Etrailer Expert Katrina B - 05/22/2023


Key pad went bad in under a year. Unable to find parts due to supply issues. Unacceptable. Will go back to another brand.

Yikes, thats not good. Lets get you over to customer service and see what we can do for you.
-- Etrailer Expert Katrina B - 03/17/2023


Perfect replacement for my older style wall controllers.


We purchased a replacement airxcel fan and it didn’t work. We then purchased this wall control still didn’t work. We finally called a tech at etrailer who was stumped and he gave us a number to a tech directly with airxcel fans . This person said we needed a new connection wire from the fan to the wall controller. This finally worked. Took awhile but we at least beat most of the steamy weather .


The product worked as expected. Fast delivery and good customer service.


Still looking for the Communication cable for a maxair 4951ks I think I found one but if you can find one let me know I use a normal phone cable it does not work properly with the wall panel control unit


Looks good but it’s wire wrong and a button doesn’t work. I bout a max 4 speed fan and the housing was too small but was able to make it fit and then found out it needs a controller, so I got it only to find one button dosent do anything ad two buttons close it and ope opens it but to turn it on you have to press two buttons at once.. ( I found this out myself since it came with no instructions.) but it dose work and the thing opens and closes.. so there you go.


This product worked perfectly as described. Plug and play less than 5 minutes to install. I also received the package in 3 days, I will definitely be ordering from this company again.
Thanks etrailer!


This was a perfect replacement for OEM switch in our RV. Fast shipping and great service from Etrailer.


Have not installed the parts yet but again etrailer has proven to be an outstanding supplier. I will make use of this company many times to come

The part is still working as expected. Still satisfied with this part and the many others I’ve purchased.
Laverne - 01/17/2022


this was easy to install and worked right away


Works perfect and fast shipping


Plug and play!!

Perfect fit and works great
Jim L - 05/15/2022


Much better than the original membrane switch that was originally installed. I consider this a worthwhile upgrade.

Great, no problem.
Gary B - 01/11/2022


I have liked my first engagement with your company. You had the part that I was having difficulty finding and it arrived a couple of days earlier than expected. I will be using you again in support of my 5th wheel parts needs.


perfect replacement, arrived fast


They both came in wrapped in bubble wrap, nicely protected in transit. I haven't plugged them in yet.


Direct replacement for OEM membrane type control. Really prefer the buttons on the new model. The only issue I had was that the manufacturer of our RV had carved out a hole behind the old control that was too large for the new mount to work. Had to Macgyver the mount a little. eTrailer was fast, efficient and priced well. I would happily do business with them again.


Fantastic and worked like a charm

Show More Reviews

See what our Experts say about this MAXXAIR Accessories and Parts

  • Replacement 4 Button Key Wall Control for MaxxFan Plus and Deluxe
    We do carry the Replacement Key Wall Control For MaxxFan Plus and Deluxe # MA00A03550K which has the 4 button design if that is what you are needing. I am not completely sure what you mean by wall control panel membrane, so if this is not what you are needing and can provide some clarification I would be happy to help you further.
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  • Replacement Wall Control Remote For MaxxAir Vent Fan 4951
    The Replacement Key Wall Control # MA00A03550K is used to control the MaxxFan 4951 vent fan.
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  • Maxxfan Deluxe Roof Vent Replacement Key Wall Control
    The Replacement Key Wall Control For MaxxFan Plus and Deluxe # MA00A03550K replaces the MaxXFan Deluxe (8751K or 8951K) and should work just fine for you. Included is a video overview of this solution.
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  • Cable For Replacement Key Wall Control Panel For MaxxFan Plus and Deluxe MA00A03550K
    There isn't a slightly different version of an RJ-11 cable, the port will accept a standard RJ-11 cable in the Replacement Key Wall Control For MaxxFan Plus and Deluxe - 4 Key # MA00A03550K. What you can use is the Communication Cable # 34279523. I have added links below to video reviews for you to check out as well if you'd like to take a look.
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  • Remote Control Compatible With MaxxAir MaxxFan 4500K
    Your MaxxFan Plus Roof Vent # MA00-04500K uses the Remote # MA00A01150K. The Key Wall Control # MA00A03550K is not compatible with your fan.
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  • MaxxAir Roof Vent for RV that is Compatible with Wall Control Unit
    If you have the wall control part # MA00A03550K installed in the wall of your trailer the Maxxair Fan part # MA00-04751KSX would easily integrate into it and work great. If you have a different switch setup let me know and I'll see what options you may have.
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  • What Fans Will Replacement Wall Control Panel for MaxxAir MaxxFan Plus Roof Vent Work With
    What I think you are asking is if either the Replacement Wall Control Panel for MaxxAir MaxxFan Plus Roof Vent, # MA59FR or, the # MA00A03550K can be used with a MaxxFan - 00-04951KSX. The # MA59FR controls the 10-speed fan, electric lift lid, thermostat, and both the intake and exhaust fan functions on aftermarket and OEM models 00-04500K, 00-04700K, 00-04800K, 00-04900K, 00-07000K, 00-07500K, 00-08500K, 00-08700K, and 00-08900K. The # MA00A03550K is for MaxxFan Plus (4751KS or 4951KS)...
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  • Correct Replacement Wall Switch for MaxxAir Vent Fan
    I wasn't able to reference this part number but we do carry a few wall mount switches for MaxxAir Vent Fans, the part # MA59FR and part # MA00A03550K. If yours look like either of these two options then they will work great for you but they are the only options we offer at this time. If you can provide me with the model number of the actual unit I may have a better answer for you but again, if your controller looks like either of the above then chances are it will work great with your unit.
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  • MaxxFan Model 4751KS Will Not Shut Off
    I took a look at your order and saw you had purchased the Replacement Key Wall Control part # MA00A03550K but the issue you are having with your MaxxFan Model 4751KS is the circuit board, the Replacement Circuit Board part # MA10A04751KS so this what you need to replace.
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  • MaxxAir Fan will not close using the Remote
    There is a quick check to run and that is to unplug the Printed Circuit Board check the connections and make sure that the connections are good and free of any debris. Plug it back in then re test if it works you're good to go if not replace it with the Replacement Printed Circuit Board for MaxxAir MaxxFan Plus Roof Vents part # MA10A04751KS which is the replacement board for the 4951KS fan that you have.
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  • Troubleshooting MaxxAir 4751KS Vent Lid Not Opening And Fan Running All The Time.
    Based on the issue you are having, Yes. A bad circuit board can cause all kinds of weird issues like your fan running all the time and the vent lid not opening. Since you have the MaxxAir 4751KS you will need the replacement circuit board # MA10A04751KS. I included a video of the # MA10A04751KS for you to take a look at.
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  • Replacement Circuit Board and Rain Sensor for MaxxFan Plus
    The MaxxFan Plus Roof Vent w/ 12V Fan, Thermostat, and Remote - Powered Lift - 10 Speed - Smoke # MA00-04500K is the similar fan to the 4951ksc. The issue you are having with the fan and lid are likely the circuit board which can be replaced with # MA10A21275K. However, the issue could be as simple as replacing the rain sensor. The Replacement Rain Sensor for MaxxAir RV or Trailer Roof Vent Fans # MA34FR is what you need for that and the rain sensor going bad causes the lid to close...
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  • Solution for MaxxFan 4751KS That Won't Open Manually or With Wall Switch
    It sounds like the operator of your MaxxFan is locked up or damaged since it won't open manually or with the motor. For a replacement you'd need the part # MA10-20281K-1AF and you'd be set.
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  • Will 14" x 14" Roof Vent Fit a 2015 Lance 1052 Camper with 14-1/4" x 14-1/4" Roof Opening
    You will definitely be able to install the MaxxAir MaxxFan Plus Roof Vent w/ 12V Fan # MA00-04751KSX on your 2015 Lance 1052 truck camper just fine. Basically anybody that measures 14" or 14-1/4" for a vent has the same vent dimensions. People will measure either the opening on the inside or outside, the lid, or even just the opening in their roof which is where the slight differences come into play. If you measured 14-1/4" then the MaxxAir vents will fit like a glove. Please note that...
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  • Parts Needed To Install MaxxAir MaxxFan Plus Roof Vent As New Install
    The MaxxAir MaxxFan Plus Roof Vent part # MA00-04751KSX is designed to replace an existing roof vent fan. Therefore, it does not come with everything needed for installation. The extra items you will need are as follows: Key Wall Control part # MA00A03550K Ceiling Garnish part # MA54FR RJ11 Communication Cable part # 34279523 Roof Vent Installation Kit part # 344270KITW
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  • Replacement Recommendation For Older Ventline Roof Vent
    The Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid # MA00-04751KSX is meant to be a direct replacement however not all the necessary hardware is included. The remaining items you'll need is the Key Wall Control part # MA00A03550K, Ceiling Garnish part # MA54FR, RJ11 Communication Cable part # 34279523, and the Roof Vent Installation Kit part # 344270KITW. Included is a picture of where you'll find the RJ-11 and RJ-45 connection points on the MaxxFan Plus 4-Speed Roof Vent...
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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Kathleen M
Installed by:
Kathleen M
Employee Mary E
Written by:
Mary E
Employee Wilson B
Updated by:
Wilson B
Employee Adam Y
Updated by:
Adam Y
Employee Matthew E
Updated by:
Matthew E
Employee Manda E
Updated by:
Manda E
Employee Carrie F
Updated by:
Carrie F
Employee Amanda M
Edited by:
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