- Low Refrigerant Level: Inspect the refrigerant level in your vehicle. If it's low, it can affect the performance and efficiency of the air conditioning system, especially on higher settings.
- Compressor Issues: Check the condition and functionality of the AC compressor. If the compressor is malfunctioning or has excessive wear, it can lead to the AC cutting out at higher power.
- Electrical Problems: Inspect the electrical connections, wiring, and relays associated with the heater and AC system. Loose connections, damaged wiring, or faulty relays can disrupt power supply and cause the system to cut out.
- Cabin Air Filter: A clogged or excessively dirty cabin air filter can restrict airflow, affecting the performance of both the heater and the air conditioning system, especially on higher fan settings.
- Servo Motor/Actuator Issues: If your vehicle has a blend door or air mix door that controls the flow of heated or cooled air, problems with the servo motor or actuator that operates this door can disrupt airflow at certain settings.
Recommendation:
To accurately identify and resolve the issue, it's best to consult a professional mechanic or a reputable automotive repair shop. They can perform a comprehensive inspection, diagnose the exact cause, and provide appropriate repairs or maintenance to ensure the heater and AC function properly at all power settings.
