2015 Waterfurnace 3 series has experienced a compressor internal mechanical failure caused by welded contacts on the starting relay running the compressor non-stop forever. When the thermostat call was satisfied and the water pump and air blowers shut down the compressor continued to pump the refrigerant causing the ice freeze over on the coils. At the same time after a third party plumber replaced one of two flow center pumps, the glycol ground loop was never recharged and is currently at 0 psi Due to the welded contacts on the starting relay the compressor has experienced permanent damage from pumping liquid and will no longer pump refrigerant during today's testing. The refrigerant compressor, discharge line muffler, liquid line filter dryer, TXV, and all refrigerant needs replaced. Nitrogen refrigerant line particulate flush 2 T&P ports, 1 is leaking The failed 2 pole starting relay and 440 volt power supply are required to match the new compressor Glycol ground loop needs to