mmm fan always on ?
 

Shouldnt this fan turn off at some point. Or is there a possible issue? I just hooked up my 2 6s 3300mah 30c batts in parrallel and the fan doesnt seem to turn off.

The fan should only be on for a few sec when armed, then off until temps hit 140f. i had this happen to me when the throttle channel was reversed, check and c if that is the case.
but if ur vehicle is running fine it might be something else.

Yes it seems to be running fine.The radio is setup right. This is for my speed project and actually dont mind it being on all the time but I just want to make sure nothings wrong with the MMM.

If its on all the time, then something is wrong. Fan temp sensor is bad or your overheating or the ESC has a fault. Contact Castle

Any Ideas?

If your running a v1 the fan stays on.

I dont think its a v1 because the power wires are soldered on the board and the bullets are on the motorside. I opened it up to clean the dirt out of it and the build date sticker says is november of 2008 also . Pretty sure v3's were out by then.