Tech verified that the Symbio control in the condensing unit is faulty. Previous company left thermostat in emergency heat but unit was not running. All control is done by the Symbio control. Tech temporarily connected wiring between air handler and thermostat bypassing the Symbio control to allow emergency heat to work. Office quoted $6806.00 plus tax to replace Symbio control with a 30-45 days ETA. Customer approved replacement of control need to order.