Refrigerator Troubleshooting Diagram

Room Air Conditioners Automatic Expansion Valves

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Automatic expansion valves are used on some room air conditioners instead of the capillary tubes to control the flow of refrigerant into the evaporator. These valves are set to maintain a normal suction pressure. They are factory adjusted and sealed, and no field adjustment is required. A small bleed port in the valve permits pressure equalization from the high to low side on shutdown. A small liquidline strainer is located in the liquid line ahead of the expansion valve.

Written by sam

February 8th, 2011 at 6:59 am

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