Panasonic CS-S9NKUW-1 Service Manual Page 77

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77
14.4.17 F91 (Refrigeration Cycle Abnormality)
Malfunction Decision Conditions
During cooling, compressor frequency = Fcmax.
During cooling and heating operation, running current: 0.65A < I < 1.65A.
During cooling, indoor intake - indoor pipe < 39.2°F.
Malfunction Caused
Refrigerant shortage (refrigerant leakage)
Poor compression performance of compressor.
2/3 way valve closed.
Detection error due to faulty indoor intake air or indoor pipe temperature sensors.
Troubleshooting
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[email protected] 31 Mar 2026 | 18:35:57

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