Hey guys I had a question since I’m only able to run to my Maxx air fan at 20% speed and anything higher makes it shut off and beep. We did get a new circuit board installed and that didn’t fix it. I also put a new battery in and that didn’t work either. My next step is to put a 12 volt regulator in by the fan to make sure it maintains 12 volts should I do the 12 volt 5 amp or 12 volt 3 amp one ? I’ve been reading different forums and watching YouTube videos and I’ve seen this fix with a regulator
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There are two or three discussions here about using a $10 PWM speed controller. I installed one last year and it's worked very well.
https://www.amazon.com/gp/product/B00F839VNQ
any tips on installing that controller?
Here's a very thorough discussion, with good photos and detailed instructions.
https://www.wanderthewest.com/forum/topic/10848-fantastic-fan-variable-speed-control/