Difference between a start capacitor and a run capacitor?
My rooftop unit's fan runs fine but sometimes the compressor won't come on. I hear a faint click but it won't engage and doesn't blow cold. Would this be a start or run capacitor issue?
Forum Discussion
John&Joey wrote:
So does one need to discharge that capacitor after unplugging?
Generally no as this application involves 120VAC vs 1Kv+ DC which can really kick.
The proper sequence if you want to be sure.
- Disconnect power
- Use an insulated screwdriver to short the capacitor's terminals
- Remove the capacitor from the unit.
If the terminals are insulated (some form of plug etc.) you are good to go without shorting.
