Detail Conditions for Starting Defrost
The starting conditions must be made with the outdoor air temperature and heat exchanger
temperature. Under the conditions that the system is in heating operation, 6 minutes after the
compressor is started and more than 28 minutes (20/25/35 class), 30 minutes (42 class), or 44
minutes (50 class) of accumulated time pass since the start of the operation or ending the
Conditions for Canceling Defrost
The judgment must be made with heat exchanger temperature.
(20/25/35 class : 4°C-22°C, 42 class : 4°C-15°C, 50 class : 4°C-12°C)