Which symptom indicates that a newly installed scroll compressor in an air-source heat pump is experiencing liquid floodback?

💡 Explanation

When liquid floodback occurs, refrigerant doesn't fully evaporate. Compressor crankcase temperature is elevated because the cold liquid refrigerant absorbs heat, raising its temperature. Therefore, a high crankcase temperature indicates floodback rather than superheat, high discharge, or valve issues, each having distinct causes related to different operational faults.

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