I checked the Lennox unit number two today and found that circuit one has a leak somewhere within the system. Compressor is still working. Recommend an estimate for a time and material for two guys to leak search due to high roof access to rope up all equipment. Once the leak is found we can repair and put refrigeration 410A back to proper levels. At this time it is flat. I did unhook stage one compressor so no further damage will happen. Then moved stage two wire to stage one so condenser fans will run and provide some cooling. Boss is out of town till Tuesday so no one could approve today to fix or replace