Mohawk Basic AC and Refrigeration Test 2025 – 400 Free Practice Questions to Pass the Exam

Verifying the power supply is the first and often essential step in troubleshooting a refrigeration system. This is crucial because a refrigeration system requires power to operate all its components – from the compressor to the fans and the controls. If there is no power or if there is an issue with the power supply, then nothing within the system will function, making it impossible to diagnose any further issues accurately.

Starting with the power supply eliminates the chance that a malfunctioning component could be mistakenly identified when the fundamental requirement for operation is absent. Once the power status is established and confirmed to be adequate, then the technician can proceed to other checks, like examining the thermostat, refrigerant levels, or electrical connections.

Ensuring the system is receiving power lays the foundation for effective troubleshooting. If the system isn't powered correctly, testing or inspecting other components would not yield useful results, thereby making power verification the logical first step in the process.