Arrived to find system not running outside and not getting 24v. Went to furnace and 24v wire was connected to only one leg of the ac. System needed to be hooked to y and ylo. Once it was connected system still didn't run so I bypassed the rectifier and got them running but only in first stage. When Compressor starts and stops you can hear there's a problem. Need to double check on how to proceed and given the time I bypassed the rectifier to let system run in first stage to keep cooling. The liquid line has been crossed threaded so only low pressure was checked but within range. Can confirm ac is running but compressor has further issues that need to be addressed asap.