Relay

If you’re sourcing the correct replacement, match part F620168-22 to the relay. In commercial equipment, small differences in revisions can change fitment, so it’s worth verifying the exact part number and placement. As a relay/contactor, this part is used to restore switching in the start/run circuit for a load. When this part fails, technicians may see voltage drop, compressor not engaging, and clicking but not starting. In repairs, replacement is considered when inspection and testing confirm the fault is tied to this component. Disconnect power before service, document the original layout with a photo, and reinstall so nothing pinches, rubs, or binds. Disconnect power before service, document the original layout with a photo, and reinstall so nothing pinches, rubs, or binds. A correct-fit replacement can prevent small issues from turning into bigger failures and helps stabilize machine performance. A practical diagnostic path is to confirm the symptom, then test the related circuit or assembly and inspect nearby components for secondary damage. 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. 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.