I just changed the compressor, accumulator and dryer and recharged the system. Also, just had the air inlet actuator replaced. I noticed the compressor (clutch) never stops spinning, regardless of what fan speed and/or how cold it may be in the cab. Could the culprit be the switch that is located on the accumulator? I've heard it is called the low psi switch, and/or, the clutch cycling switch. Any assistance would be appreciated. TIA James