Are you sure it's working fine? A blinking red led can mean a few things, if it still has steering and has throttle, check that it's not half speed. A voltage issue drops the esc to safe mode, half power or less, and flashes the led red. I can't find the trouble codes for the BLX100 ESC, but blinking red in sequence can be a few things. loss of transmitter signal, no output from receiver, low voltage or errant voltage, overheat and a couple others.