NOT KNOWN FACTS ABOUT ECO-FRIENDLY COMMERCIAL VENTILATION

Verify the electrical connections on the indoor device. Lift the A/C unit’s front panel and remove the duvet. Ensure the cable wires are connected to the screw terminals and the wiring matches the diagram that came With all the unit.Seal up the hole from the wall employing expanding polyurethane foam. Spray growing polyurethane foam into the open