Upon arrival I found Geo system flashing both high and low pressure faults. Reset faults and ran system to find loop pump getting voltage but it’s overheating and overamping, not moving any water. Quoted customer to replace pump and he approved. Replaced pump with new. Purged all air out of system by pumping up loop and opening up burp cavity. Opened remaining valves then ran system. Checked loop pressures and temps. Unit now has 20 degree delta at Evap coil. Unit operating normal at this time.