Outdoor Unit LED 12 Flashes — Compressor temperature error (permanent stoppage)

What does 12 Flashes (Outdoor Unit) mean?

The LED on the outdoor unit flashes 12 times. This indicates a critical and persistent error with the compressor's temperature, leading to a permanent system shutdown.

• Sustained compressor overheating.
• Serious fault with the compressor's internal components.
• Failure of the compressor thermistor.
• Severe system blockage or low refrigerant charge.

Click steps to track your progress.

1. 1

   Power cycle the heat pump system by turning off the main breaker for at least one minute, then restoring power.

2. 2

   Clear any debris or obstructions from around the outdoor unit to ensure optimal airflow for cooling.

3. 3

   Check the indoor unit's air filters and clean or replace them if they are dirty and restricting airflow.

4. 4

   If the error persists, contact a qualified technician immediately, as this indicates a serious and potentially damaging fault with the compressor.