Very limited information generic answer look on the covers of the unit for your c line connection and check if your thermostat wires were connected if all are then you have a c line but not connected on stat if not connection at units then run a line to the stat
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Very limited information generic answer look on the covers of the unit for your c line connection and check if your thermostat wires were connected if all are then you have a c line but not connected on stat if not connection at units then run a line to the stat
"Could you please check the attached pictures?"
no one?