Upon arrival the power was turned off at the 70 amp breaker supplying the geothermal 2009 water furnace premier envision will not stop running when the thermostat turns off AND it will not engage y2 for high stage coolant Confirm system will shut down when thermostat Powers disabled Grounded pressure is at 0 PSI Free pressurized ground loops to 40 PSI with house water pressure Inspect replacement evaporator coil and run test system for proper refrigerant pressures Discovered the TXV sensing bulb was not attached and dangling free in the compressor compartment. Reattached TXV sensing bulb in the original location Suspect refrigerant circuit has possible contaminants causing fluctuations in the refrigerant pressures that will not stabilize Test run 2 pump flow center Minor oil drips we're also discovered on the discharge copper line. Refrigerant pressures are within specs or no additional testing is required at this time Homeowner will purchase and install his own two stage heat p