• Ref Tools App

  Troubleshooter

  Essential information when troubleshooting refrigeration systems

Room temperature too high

• Pressure drop across evaporator too high.
• Lack of subcooling ahead of expansion valve.
• Pressure drop across expansion valve less than pressure drop valve is sized for.
• Bulb located too cold, e.g. in cold air flow or near large valves, flanges, etc.
• Expansion valve blocked with ice, wax or other impurities.
• Expansion valve too small.
• Charge lost from expansion valve.
• Charge migration in expansion valve.
• Expansion valve bulb not in good contact with suction line.
• Evaporator completely or partly iced up.
• KVP evaporating pressure regulator set too high.
• Bellows leak in KVP evaporating pressure regulator.