A malfunction “F6” (overcharge of refrigerant) is displayed when a “check operation” is executed as a test operation under the condition of low outdoor temperature in the winter season.
Due to temporary refrigerant mixing into refrigerating oil, misjudgment is made when a “check operation” is executed under the condition of low outdoor temperature.
The condition completes by executing the “check operation” again.
Be sure to execute a “check operation” with the front panel closed. Or, misjudgment is made even if the outdoor temperature is low.