The PE error in Carrier AC happens when the indoor coil overheats, and it’s a safety feature designed to protect your air conditioner. This issue can occur in both hot and cold models, and it helps prevent serious damage to the unit by shutting it down when the indoor coil gets too hot. When the PE error appears, it means the system has detected that the indoor coil is running at dangerously high temperatures. This could happen due to poor airflow, often caused by a dirty or clogged air filter, low refrigerant levels, or problems with the evaporator coil or fans. If airflow is blocked or restricted, the coil can overheat, triggering the protection mode. Once the system detects the issue, it automatically stops running to protect the indoor coil and other parts of the air conditioner. After the temperature returns to a safe level and the cause of the overheating is fixed, the system will restart, and your Carrier AC will continue normal operation. Regular maintenance, like cleaning the air filters, checking the refrigerant levels, and ensuring nothing is blocking the airflow, can help prevent the PE error. This protection feature is important for keeping your air conditioner running smoothly and extending its lifespan, especially in environments where the system might struggle to maintain proper cooling.

Meaning

Indoor coil overheating protection – in hot and cold ac