Reduced refrigerant levels can significantly decrease performance, but should not be diagnosed based on a single symptom.

Potential indications

Low pressure, high superheat, reduced thermal output, or recurring low pressure alarm.

Ice is not enough

Icing can also be caused by flow, air flow, or sensors.

Leak detection

If there are indications, appropriate leak detection by a certified refrigeration technician is required.

Best practice

Do not simply add refrigerant without identifying and repairing a potential leak.