Max 10 G2 ESC Normal Fan Operation.

To verify the exact product click the link below.

https://www.hobbywingdirect.com/products/ezrun-max10-g2-esc?variant=40519459078259 

With the Max10 G2 the fan has been updated with a patented frameless fan that has a separate fan plug.

Normal operation of the Max 10 G2 fan is that, the fan will only power on, when the ESC temperature threshold has been reached. The fan may or may not power on briefly when the ESC is first powered up. This operation is normal, and is nothing to worry about. This will save a power, and reduce noise.