I had bought the boat used with a Barracuda 80 that was fried so, I installed a Castle Hydra 120 and , left the timing at the default normal setting.After the run when the boat quit moving, I reteived the boat and found that the controller was unable to go into programming mode. This was after I let it sit for 1 day. I did not have my temp gun with me at the time but, the batteries , motor, and the controller did not feel hot. It did sit in the water for about 15 minutes until I could retreive the boat.