Outdoor Unit LED 6 Flashes — Expansion valve thermistor error

What does 6 Flashes (Outdoor Unit) mean?

The LED on the outdoor unit flashes six times. This indicates an issue with the thermistor associated with the electronic expansion valve.

• Faulty expansion valve thermistor.
• Loose or damaged wiring to the thermistor.
• Problems with refrigerant flow affecting thermistor readings.

Click steps to track your progress.

1. 1

   Perform a full power reset of the heat pump system by turning off the main breaker for 60 seconds and then turning it back on.

2. 2

   Ensure the outdoor unit is not obstructed, allowing proper airflow.

3. 3

   If the error persists, contact a qualified technician, as issues with the expansion valve or its thermistor often require specialized refrigerant handling and diagnostic tools.