Flow center replacement warranty Communicating thermostat service code E3. Replacement non-pressurized flow center installed in July is completely empty during running but refills to 3/4 when system turns off. Refill non-pressurized reservoir with house water while running to allow remaining air to bleed. run test 20+ minutes Suspect possible air pockets in the replacement glycol flush however The original pressurized flow center system was a complete blowout at the flow center instigating the flow center replacement. Based on the known history of this equipment by Westin Air for the past 3 years I suspect a ground loop leak outside of the house. *If the flow center system remains running at a full level this is excellent news however if the service codes return on the thermostat in the future and the flow center antifreeze solution is low for a third time th then a geothermal well company such as Jackson geothermal or Eaton & Crabtree Will need to be contacted regarding pressur