Rapido hotend not going below 179 degrees

Hi, have built a ratrig V core 3.1 with a rapido uhf and an octopus 1.1. As soon as klipper starts the hotend temperature goes up to 179 degrees, although "State" says the heater is off and "Target" is set to 0. and when I set the temperature to 200 degrees, it bounces around between 200- 230 degrees, and "state" jumps between 0 and 100% nothing else. Does anyone know what the error could be.