Two system geothermal split equipment with gas furnace backups. Second floor equipment has third floor installed 80% gas furnace janitrol estimated 25 plus years old, basement system has replacement carrier high efficiency gas furnace estimated 2020 range 100K BTU , 2006 water furnace e series EZ040S10ANBSSA Both split geothermal systems are short cycling and intermittently locking out on water flow and pressure switches due to a faulty water furnace premier control board on the right side system. The relay and few circuit controlling the single dual pump flow center has melted and blown the fuse and is non-resettable All other functions of the control board appear to be normal Transfer high voltage supply to the flow center from the right side geothermal equipment to the left side geothermal system and Make the appropriate adjustment to the Twinning kit installed Repressurize ground loops from less than 10psi to 45 PSI for entering into heating season Install two 16X25x1 pleated