Relay Compressor

Part 18-1903-67 is a relay compressor used in commercial ice equipment and related refrigeration assemblies. A replacement like this is typically used when the installed component shows age, damage, or performance drift that affects normal operation. Confirm the equipment brand and the original part reference on the unit before installing a replacement. If your machine has multiple production revisions, confirm the exact model and serial details before finalizing the order. Helps the circuit start and switch loads correctly when the machine is not starting, clicking, or short cycling. Field complaints tied to this part type often include intermittent operation, hard starts, and clicking but not starting. Relay or contactor faults can interrupt startup and cycling, especially when contacts are worn or the coil becomes unreliable. For this relay/contactor category, the typical repair goal is to restore the function that the failed component was affecting. During diagnosis, the part number should be matched first, then the circuit or assembly should be tested to confirm the failure path. When replacing a relay or contactor, inspect the socket/terminals and confirm coil/control voltage conditions to prevent repeat failures. After installation, technicians typically monitor startup or cycle operation to confirm the machine returns to normal behavior. Replacing a failed component with the correct part number helps restore normal operation, reduces repeat callbacks, and supports more reliable troubleshooting outcomes. For ordering, match the part number exactly and compare the removed component to the replacement before installation. That step matters on commercial ice equipment because similar-looking parts can have different ratings, connectors, or mounting details. If you are troubleshooting symptoms such as not turning on, no power, not cooling, not starting, intermittent operation, error code behavior, or ice not dropping, confirming the failed component first will make this replacement more effective.