Went out to my garage and heard a buzzing sound coming from my Sun Country (Clipper Creek) 240v charger. It sounded very much like a transformer buzz you hear from a large transformer, not real loud but loud enough to hear it in the hallway beside the attached garage. I unplugged the charger from the car, waited a few seconds, plugged the charger back into the car and all is normal again.
Has anyone else experienced this and could this be a sign of imminent failure? The charger is about 3 years old and is used daily. I guess time will tell but I have never heard any sounds from the unit other than when the relay operates to start the high voltage charging.
I have a aerovironment l2 unit that I bought when I had my Leaf. It has done the buzz a time or two, but usually it goes away. I think it's just the coil in the contactor. As long as it makes juice, I don't care. Can't hear it from the tavern!
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