Fault code 55 for a Ruud furnace means that the pressure switch failed to close. You need to turn your furnace on and check to make sure you induce fan is running. Your inducer fan is the small fan that pushes air out if you combustion chamber to your vent. The vent will be the pipe that goes outside. It can be either galvanized metal or PVC depending on the efficiency of your heater. Check that out to make sure your inducer fan is on and report back here and let me know what you find out
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Fault code 55 for a Ruud furnace means that the pressure switch failed to close. You need to turn your furnace on and check to make sure you induce fan is running. Your inducer fan is the small fan that pushes air out if you combustion chamber to your vent. The vent will be the pipe that goes outside. It can be either galvanized metal or PVC depending on the efficiency of your heater. Check that out to make sure your inducer fan is on and report back here and let me know what you find out
Look on inside of doors of unit for codes