OVERLOAD

When part 18-8939-51 is specified for a service call, the component involved is the overload. Replacement is usually considered after inspection confirms wear, damage, electrical failure, or a repeat operating issue tied to this component. Before purchase, compare the machine brand and the removed part markings to avoid ordering a visually similar but incorrect item. Model verification is important because close machine variants may use different revisions of the same component category. Protects and resets the compressor circuit when overheating or overload conditions cause shutdown and restart problems. Depending on the machine setup, failures in this part category can show up as hot shutdowns, not cooling consistently, and compressor trips. An overload protector issue may appear as shutdown after heating and restart only after the system cools down. For this overload protector category, the typical repair goal is to restore the function that the failed component was affecting. Before ordering, technicians usually confirm the part number, inspect adjacent components, and test the affected circuit or mechanism. Overload diagnosis often includes checking compressor amperage, terminal condition, and ventilation issues that may trigger thermal trips. Documenting voltage, resistance, temperature, or flow readings during diagnosis also helps validate the repair after installation. Replacing a failed component with the correct part number helps restore normal operation, reduces repeat callbacks, and supports more reliable troubleshooting outcomes. Documenting voltage, resistance, temperature, or flow readings during diagnosis also helps validate the repair after installation. To avoid ordering delays, confirm the exact part number and compare mounting style, connector style, and application details before installation. Complaints such as not turning on, no power, not cooling, not starting, intermittent operation, error code messages, or ice not dropping can overlap across several parts, so a confirmed diagnosis will help this replacement solve the actual problem faster.