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Indoor Unit Outdoor Unit CS-E9NKUAW CS ... - Panasonic

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16.4.21 F91 (Refrigeration Cycle Abnormality)<br />

Malfunction Decision Conditions<br />

� During cooling, compressor frequency = Fcmax.<br />

� During cooling and heating operation, running current: 0.65A < I < 1.65A.<br />

� During cooling, indoor intake - indoor pipe < 39.2°F.<br />

Malfunction Caused<br />

� Refrigerant shortage (refrigerant leakage)<br />

� Poor compression performance of compressor.<br />

� 2/3 way valve closed.<br />

� Detection error due to faulty indoor intake air or indoor pipe temperature sensors.<br />

Troubleshooting<br />

68

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