Outdoor Unit LED 23 Flashes — Discharge pressure sensor error

What does 23 Flashes (Outdoor Unit) mean?

The LED on the outdoor unit flashes 23 times. This indicates a problem with the discharge pressure sensor, which measures the pressure of the refrigerant leaving the compressor.

• Faulty discharge pressure sensor.
• Loose or damaged wiring to the sensor.
• Abnormal refrigerant pressure affecting sensor reading.

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 clear of any obstructions that might impact its operation.

3. 3

   If the error persists, contact a qualified technician to diagnose or replace the discharge pressure sensor.