Why my piano is playing samples automatically?

I have a yamaha p45. It was working just fine and i had no issues for about 2 years now. Recently, when i was playing the piano without pressing the paddle, it was working properly. But, whenever i am pressing the pedal to make the sound sustain and playing the keys, the piano is playing some sample built in rhythms. And the red power button starts blinking then. I have tried doing factory settings, but nothing helps.

Please help!