What happens if the orifice tube is totally blocked?

If the orifice tube is totally blocked, it can lead to a complete loss of refrigerant flow in the air conditioning system. This blockage prevents the proper cycling of refrigerant, which can cause the system to fail to cool the air effectively. Additionally, the buildup of pressure before the blockage may result in damage to the compressor or other components due to excessive strain. Overall, a blocked orifice tube can lead to decreased performance and potential system failure.