Compressor Freeze Over

[pepsi-perk]

What would cause a compressor to freeze over?

[Vendo_110]

Maybe the thermostat not working properly and staying open too long?

[johnieG]

If you mean the large copper suction line is frosting up, it's typically an overcharged system with too much freon. so  the liquid freon is getting back to the compressor & frosting the line, not a good situation, it can damage the compressor itself, look around for an added on (clamped to a copper tube) service valve, it's a sure sign someones been tinkering...