System blowing warm air in home. Found condenser in lockout mode. Fault code giving was for “Tonnage configuration error”. I then checked dip switches for tonnage set up dip switches were not set for correct tonnage. I then set dip switches to configure correct tonnage. System began to operate in cooling stage 2. I monitored system operation and pressures for a while system ran continuously without any problems or codes given. I informed homeowner of issue and work performed.advised homeowner to continue to monitor system. Condenser fan and compressor both operating within range. Light rinse to outdoor coil. Temp split good. System operating properly at time of departure.