Run capacitor: microfarad test and tolerance
Run capacitors stay in the circuit while the motor runs. Test capacitance with a meter that has a µF range and compare to the label. Replace if outside the tolerance printed on the can, if open, or if bulged or leaking.
Cross-checked ~20 min moderateBrands: All
Before you start
- Turn off and lock out power at the disconnect or breaker; verify 0 V
- Capacitors store charge: discharge through a resistor tool and verify 0 V before touching terminals
- Replace with the same µF rating and an equal or higher voltage rating
Diagnostic steps
Unlock all 5 steps with expected values
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