What Causes the Air Conditioner Heater to Not Heat Up?
1 Answers
Air conditioner heater not heating up can be caused by: 1. Insufficient coolant, which is a common reason for the heater not warming up; 2. Excessive scale, impurities, or flocculants in the coolant, leading to slower flow and reduced volume; 3. The electronic control valve is stuck in a permanently open, closed, or fixed position; 4. The thermostat is permanently open. The correct way to turn on the heater is: 1. Do not turn on the heater immediately after starting the car, especially in winter. Vehicles left in low temperatures for extended periods without warming up can damage the transportation system; 2. Adjust the airflow direction towards the feet to prevent noticeable breathing discomfort for passengers.