START CAPACITOR

If your repair notes call for 18-1901-57, the requested component is the start capacitor. It is commonly ordered when a machine still has power available but a specific circuit, movement, or cooling function is no longer working correctly. Confirm the equipment brand and the original part reference on the unit before installing a replacement. Model verification is important because close machine variants may use different revisions of the same component category. Supports motor or compressor starting/running when the machine has hard starts, humming, or intermittent startup. Common service symptoms that can point toward this type of part include humming and not starting, weak motor start, and intermittent startup. A weak or failed capacitor can leave a motor or compressor humming, starting slowly, or failing to start under load. For this capacitor category, the typical repair goal is to restore the function that the failed component was affecting. In troubleshooting, matching the part number and checking the related wiring, mounting points, and operating conditions helps avoid repeat repairs. For capacitor-related repairs, technicians commonly test capacitance value, inspect terminals for heat discoloration, and check for swelling or leakage. A quick inspection of wiring, connectors, mounting hardware, and surrounding components can prevent a repeat failure after replacement. Replacing a failed component with the correct part number helps restore normal operation, reduces repeat callbacks, and supports more reliable troubleshooting outcomes. The best results come from matching the part number to the machine and replacing it only after the failure has been confirmed. Symptoms such as not turning on, no power, not cooling, not starting, intermittent operation, error code faults, or ice not dropping may point to this part category, but technicians should verify the complete failure path to make the repair stick.