"The heater knob off but the hvac heater motor is still on and noisy" – Here, "heater knob" is the control knob, so "ısıtma düğmesi" in Turkish. The HVAC system is kept as is. So the translation would be "Isıtma düğmesi kapalı ama HVAC ısıtma motoru hala çalışıyor ve gürültülü". I need to make sure "hvac" is kept as is and technical terms are correct.