Relay

Part F620168-14 is used to replace a failed relay after diagnosis confirms the fault. If the machine has multiple production revisions, confirm the unit tag and the original part markings before purchase. As a relay/contactor, this part is used to restore switching in the start/run circuit for a load. Failures in this area often show up as voltage drop, intermittent start, and compressor not engaging. Technicians often replace this component after confirming clicking but not starting, short cycling, or inconsistent engagement. Good troubleshooting includes matching the part number, checking the installation area, and confirming the failure is not caused by a related component. Relays/contactors are usually checked for coil continuity, contact wear, and terminal heat marks that can cause voltage drop or chatter. Once the failed part is confirmed and replaced, cycle behavior should normalize and performance should return to expected operation. Disconnect power before service, document the original layout with a photo, and reinstall so nothing pinches, rubs, or binds. If the part is in a water path, do a leak check during the first run and again after the unit has operated for a short period. Once the failed part is confirmed and replaced, cycle behavior should normalize and performance should return to expected operation. If multiple symptoms overlap, complete the diagnosis before ordering so the replacement targets the true root cause. Inspect surrounding wiring, tubing, and mounting points so the new part is not exposed to the same stress that damaged the old one. After a successful repair, technicians often note the symptom and test result to make future troubleshooting easier. Cleaning the area around the repair helps improve fitment and makes leak or vibration checks more reliable. If multiple symptoms overlap, complete the diagnosis before ordering so the replacement targets the true root cause.