Ac compressor stuck on unless unplugged

05 379 c13

noticed my ac wasn’t blowing good so suspected freeze up.

was correct accumulator and lines froze (assumed evaporator as well)

turned fan off ac switch off to thaw out yet compressor still ran which would exsplain freeze up had no blower motor running for hours yet compressor was running

so unplugged compressor to prevent damage and clutch disengaged

thoughts?

 

If the low pressure and high pressure is within operating range then the compressor would run, correct? So if a switch in theory stuck open you wouldn’t know unless u check pressures?

I tested the relay port 30 and 86 has power so it’s telling it to be on just not sure why