Yes I tested the LCD, the DHT11, and the KY-040 Rotary Encoder with test programs (The rotary with the serial monitor sketch from the link of my initial request).
All parts (exept for the rotary) are also working accordingly, the DHT-11 notices the environment temperature which is also printed on the LCD. The relais for the Heating Element and the Fan are powered on because the temperature in my room is lower than 25C ( as shown on the linked picture)