Keeprite
Compressor Start Failure
Outdoor fan runs but compressor does not start; unit hums or clicks but no cooling.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed compressor run capacitor, Failed start capacitor or hard-start kit, Open compressor winding, Stuck or failed contactor, Low supply voltage
How to Fix / Troubleshooting
Safety first: Turn off power at the disconnect and verify with a tester. Capacitors can hold a charge; discharge them safely.
- Step 1 – Listen and observe: When calling for cooling, note if you hear the contactor click and a brief compressor hum.
- Step 2 – Inspect capacitor: Remove the panel and locate the dual run capacitor. Replace if bulged, rusted, or leaking, matching µF and voltage ratings.
- Step 3 – Check contactor: Inspect for burned or welded contacts. Replace if badly pitted.
- Step 4 – Test run: Restore power and test. If the compressor still will not start, shut off power and call a technician to test compressor windings and supply voltage.
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Repair Difficulty
Hard
4/5
Required Part
Dual Run Capacitor
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