Diagnosised possible control board. Ordered board putting on hold till Monday. 8/14/25 installed new control board. Still having and issue. Think the air temperature sensor on economizer is bad. Took pictures. Waiting for material. Set system up with temporary cooling for now. System is cooling and turning on and off as needed. Will need to come back however. A So pulled exhaust fan motor for Dave to order replacement. 8/19/25- replaced exhaust motor and belt on rtu exhaust termination fan.