T127 — Circuit B High Discharge Pressure Shutdown

What does T127 mean?

Circuit B has shut down due to high discharge pressure. This is often related to system overcharge or airflow restrictions.

• System is overcharged
• High outdoor ambient temperature
• Dirty outdoor coil
• Plugged filter drier
• Faulty high-pressure switch

Click steps to track your progress.

1. 1

   Check for system overcharge.

2. 2

   Ensure the outdoor coil is clean.

3. 3

   Inspect and replace the filter drier if necessary.

4. 4

   Verify the high-pressure switch is functioning correctly.

5. 5

   Consult a qualified technician for further diagnosis.