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In this episode, I'm sharing a consistent set of checkpoints during startup and troubleshooting on condensing units and walk-ins. We walk through key measurements from the compressor through the system, including suction pressure/temperature, discharge temperature, volts/amps, oil temperature, condenser inlet/outlet conditions, receiver inlet/outlet checks, liquid line temperature changes, and evaporator outlet pressure/temperature to verify subcooling and superheat. Write these checkpoints down, learn from other techs, and leverage data to spot trends and root causes to speed up service and reduce callbacks.

In this episode, we cover:

(01:23) Refrigeration System Checkpoints Overview

(02:31) Compressor Baseline Checks

(04:42) Condenser Subcooling Checks

(07:32) Receiver and Liquid Line

(08:24) Evaporator Superheat Checks

(09:35) Airflow Defrost and Tools

(10:56) Building Your Troubleshooting Framework

Helpful Links & Resources:

Episode 14. What About Condensers in Refrigeration Applications?

Episode 295. A Compressor Story: The Key to Faster Troubleshooting

VIDEO: CO2 Unfiltered with Sam Major