Troubleshooting
Measurement guide: superheat, subcooling and typical values
Enter what the gauges and thermometers show. The guide calculates evaporating and condensing temperature, superheat and subcooling, compares them with common typical values and suggests symptoms to troubleshoot.
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The typical values are common for refrigeration and heat pump systems and approximate; the manufacturer's values apply. Measure temperatures with sensors that have good contact and are insulated. The tables come from CoolProp. Systems with a capillary tube usually run with lower superheat, often 0–5 K. The values are carried into the service report on the symptom pages.
Work on the refrigerant circuit may only be carried out by certified personnel. Isolate the power before working on electrical parts and take particular care with high pressures (CO2) and flammable refrigerants (A2L and A3). Always follow the manufacturer's instructions.