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

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Question:

Hello My maxair fan only works at the highest level and air goes out. I was able to use it normally before. Changing settings from 1-10 and air input and out. I cant control any changes manually or remote. I tried resetting the temperature setting but no luck. Help me please

asked by: Helen

0

Expert Reply:

If your MaxxFan Plus Roof Vent w/ 12V Fan, Thermostat, and Remote - Powered Lift - 10 Speed - Smoke # MA00-04500K is only functioning at one setting and not allowing you to control anything else then the circuit board is the most likely cause. Replacement circuit boards are model specific so you'll want to ensure which model you have and choose the correct replacement.

The Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan # MA10A21275K is compatible with the following models: MaxxFan Plus: 00-04500K, 00-04700K, 00-04800K, and 00-04900K and MaxxFan Deluxe: 00-0700K, 00-07500K, 00-08500K, 00-08700K, and 00-08900K.

The Replacement Printed Circuit Board for MaxxAir MaxxFan Plus Roof Vents # MA10A04751KS is compatible with the following models: 4751KS, 4761KS, and 4951KS.

expert reply by: Kevin C

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Answer 1

Hello Stuart, thanks for reaching out. I have provided a picture showing the wiring diagrams for the Roadmaster Diode Kit #RM-15267. I have also included a link to the manufacturer instructions, as well as a link to our video showing installation on…

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Answer 2

The 7-way to 7-way lamp out adapter #20142 would work for your 2019 Mercedes Sprinter to prevent the sensor issue you are experiencing. We've had customers with Sprinter vans like yours and they reported that this fixed the issue.

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Answer 3

You would not be able to charge your battery through the wiring on your 4-way trailer connector. Since your truck has a 7-way connector, you could maintain the power to the battery but not charge it. To begin, you would need to cut off your 4-way…

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Answer 4

Hey Denny, it sounds like the power source might be weak. If the fan is ran off of a trailer battery check to make sure the battery has a decent charge and also make sure the wiring to the battery is making a good connection as well. Otherwise…

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Answer 5

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…

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Answer 6

Since multiple MaxxAir Fans have the same features that you listed it's honestly best to first determine the exact model number you have before purchasing anything and end up not having it be compatible. I've listed below all the available…

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Answer 7

If your roof vent lid won't open, even when using the manual lift knob, then the gears of the lift operator are most likely stripped out and the lift operator will need to be replaced. The Replacement Operator Mechanism #MA10-20281K-1AF is…

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Answer 8

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 9

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…

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Answer 10

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 11

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 12

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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

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