CAPACITOR START

This component—capacitor start, part F620167-55—is ordered when symptoms point to a failure in this area. In commercial equipment, small differences in revisions can change fitment, so it’s worth verifying the exact part number and placement. If the issue is intermittent, look for heat marks, vibration wear, loose connections, or binding movement that changes under load. Capacitor service often includes checking capacitance value, inspecting terminals for heat damage, and confirming the connected motor/compressor is not locked. Once the failed part is confirmed and replaced, cycle behavior should normalize and performance should return to expected operation. As a capacitor, this part is used to restore starting and running performance for motors/compressors. Failures in this area often show up as humming and not starting, slow start, and weak startup. Once the failure is confirmed, replacing the part helps correct the specific fault path and stabilize operation. Recheck fasteners and connectors after the first cycle to confirm everything remains tight under vibration and normal operation. After installation, run a short test cycle and check for stable operation, leaks, vibration noise, and any recurring fault symptoms. 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.