Which tool is essential for troubleshooting refrigeration issues?

A multimeter is an essential tool for troubleshooting refrigeration issues because it allows technicians to measure electrical parameters such as voltage, current, and resistance. Understanding these measurements is crucial in diagnosing problems with electrical components within refrigeration systems, such as compressors, capacitors, and control circuits.

When utilizing a multimeter, a technician can determine whether electrical components are functioning within expected ranges or if there are faults that need addressing. For instance, if a compressor is not starting, checking the voltage supply with a multimeter can reveal whether electrical power is reaching the unit. Similarly, measuring resistance can help identify short circuits or open circuits in the wiring or components.

In contrast, while tools like screwdrivers, pliers, and socket wrenches serve important functions in repairs and adjustments, they do not provide the necessary electrical diagnostics that a multimeter does. These other tools may assist in dismantling components or tightening connections, but they lack the capability to measure and diagnose electrical issues critical for resolving refrigeration malfunctions effectively.