Outdoor Unit LED 11 Flashes — Discharge temperature error (permanent stoppage)

What does 11 Flashes (Outdoor Unit) mean?

The LED on the outdoor unit flashes 11 times. This indicates a serious and persistent error related to the refrigerant discharge temperature, leading to a permanent system stoppage.

• Severe refrigerant charge issue (over or undercharged).
• Significant blockage in the refrigerant circuit.
• Malfunctioning compressor or discharge thermistor.
• System operating under extreme, unsustainable conditions.

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

   Ensure the outdoor unit is clear of any obstructions, especially around the heat exchanger.

3. 3

   Check for any visible signs of severe icing or unusual noises from the compressor.

4. 4

   If the error remains after a power reset, contact a qualified technician immediately, as this is a critical system fault.