Door closer assembly

A door closer assembly, comprising:

• a valve, the valve regulating an amount of hydraulic fluid that flows through the valve, the amount of hydraulic fluid flowing through the valve controlling a force generated by the door closer assembly on a door;
• a first sensor, the first sensor measuring an angular position of the door;
• a second sensor, the second sensor measuring an angular position of the valve, the angular position of the valve determining the amount of hydraulic fluid flowing through the valve;
• and
• a controller, the controller controlling the adjustment of the valve based on the angular position of the door and the angular position of the valve,
• wherein the controller reads a first angular position of the door from the first sensor and then reads a second angular position of the door from the first sensor, and the controller determines a difference between the first angular position and the second angular position and compares the difference with a threshold value.