Inspection of geothermal unit shows that domestic water line portion of geothermal hot water generator setup is leaking water. Shut off water supply lines to geothermal and turn off HWG switch. This will not hinder geothermal operation. Test ran system in geothermal heating. No other issues with geothermal heating were found or suspected. Cathy will be notified to draw an estimate for full system replacement since the current repair in not possible.