I have a problem unit, FHP 070 geothermal has always dimmed the lights on startup finally burned out the compressor after 3 years. Installed new compressor, fliped the breaker and it burned out so fast the digital ampmeter never even registered, I mean the breaker tripped back out before my finger cleared it.
Put on another new compressor, ,same thing except it didn't ground and trip the breaker.
First time there was a possibility of slugging but absolutely not the second.
These are Copeland scroll compressors,are these not equiped with a thermal overload?
I'm somewhat new to ac compressors, but worked with pumps and motors for 40 years. Never saw anything burn out that fast in my life time.

Any ideas?