The note thats included with a v3 MMM says the fan doesn't come on until 150F and I thought I'd read it does run briefly when you power up. There are two devices on the board that are responsible for running the fan.


http://www.rc-monster.com/forum/show...7&postcount=16



If yours works, but doesn't run while the MMM is on, one of these devices may be bad. You can either hook it up directly and run it all the time or get it repaired. If your MMM is running that ho,you def need to do something to get fan running again.