Where is the reset button on an Amana PTH153B50AM

SOURCE: Amana PTH153B50AM AC works, heat doesn't. Is

there might be a reset button on the heat protector / you just might have a bad heat protector or the sensor on the board could be burnt out

SOURCE: I have an Amana PTAC

First unplug the unit......Take the front cover off, take the wire screen off where the front fan is there is 4 or 5 screws that hold the plate that was under the screen. The electric heating elements are under that plate between the evaporator coil and the front blower wheel. It will lift straight up and give you access to the elements. In the electric heating element area there is a limit switch with a red or black button in the center of it push it to reset the limit it is on the right hand side by the controls. I wish I could find a picture to show you but I couldn't find one. It is not easy to get to... Hope this helps.