Why is My MaxxAir Fan Not Working When I Push the Auto Temp Button the Green Light Comes On?

Updated 02/06/2025 | Published 01/25/2025

Products Featured in This Question

MaxxAir MaxxFan Mini Roof Vent w/ 12V Fan - Manual Lift - 4 Speed - Black

(176)

$183.54

Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid

(90)

$212.98

Hook Probe Circuit Tester

(60)

$12.27

Question:

Hi I have a Maxi fan that I bought from you last year. When I turn it on nothing happens, if I push the auto temp button I get a green light but thats all. In short the fan will not turn on. Help

asked by: Andrew J

Expert Reply:

Hello Andrew,

I am sorry to hear that your MaxxAir Fan is acting up. I was able to look up your order from last November and it looks like you have the # MA00-04751KSX. Here is some troubleshooting you can try to get it work:

- Check power supply to make sure you are getting the full 12V by using something like a Hook Probe Circuit Tester # PTW2993

- Inspect fuses and connections.

- Make sure the fan is not set to "Auto Off" and try turning it on manually instead of using the temperature mode.

- Reset the fan. Disconnect the power for a few minutes and then reconnect.

- Inspect the motor and the fan. Make sure that no debris got in there causing things not to spin and work.

- Inspect the circuit board. Look for burned or damaged components.

If you check all of these things and it is still not working, please let me know. If it is still not working please make sure that you include the Serial Number. To locate the serial number, you will remove the round bug screen from the fan. There is four twist tabs holding the screen up. You will turn the tabs halfway and the screen will come down. You will then see a small white sticker in one of the corners with a model and serial number.

Please let me know if you get it working and what step it was that helped. You can do so by clicking the "RESPOND TO KATE F" below.

expert reply by: Kate F

Andrew

2/6/2025

Power supply good 12.5v good ground , fuses good Fan not in auto off, attempoted to turn on manually, No go Reset power supply & reattempted, nope still no go With controller bypassed, Power & ground supplied to fan directly, Fan works. Controller circuit board looks OK no burned traces or obvious visual signs of damage. This things got a 2 year warrenty?? Yes??

Kate F.

2/6/2025

@Andrew Yes, this has a 2 year warranty. You will need to reach out to the manufacturer directly for the warranty, you will want to call their tech services 316-832-4357. I am going to have someone from customer service send you a new invoice in case you no longer have yours. If you need anything else from my end, please do not hesitate to ask. Please let me know how things go.