Alarm 53 Carrier

Alarm 53 Carrier Transicold
By Ing. Gerson Mora – October 17, 2022

Alarm 53 on Carrier Transicold units is triggered when the container’s temperature is not within the normal range or fails to reach the desired value within a specified time. Below are some key troubleshooting steps to address this issue:

Possible Causes and Solutions:

1. Leaking Doors:
   Inspect all doors to ensure they are completely sealed and closed properly.
2. Defrost Cycle:
   Initiate a manual defrost cycle. Ensure the cycle completes automatically.
3. Low Refrigerant Pressure:
   Check for Alarm 18, which may indicate low refrigerant levels.
4. Evaporator Airflow:
   Verify the presence of Alarm 56, which could signal airflow issues in the evaporator.
5. System Pressures:
   The low and high system pressures should be within the normal range and match the values displayed on the system panel.