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119 
18.4.22    F91 (Refrigeration Cycle Abnormality) 
Malfunction Decision Conditions 
  The input current is low while the compressor is running at higher than the setting frequency. 
 
Malfunction Caused 
  Lack of gas. 
  3-way valve close. 
 
Troubleshooting 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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