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• Fan Only Mode Operation
During the appliance run in this mode, the compressor and outdoor fan stop, the indoor fan operate under the
pre-setting of air volume, and the louver swing, and the indoor fan speed same as the Heating Mode.
5-2.2 D Special Function Instructions
• Conditions of anti-freezing prohibition of frequency rising:
¹
Condition 1
: in the case of anti-freezing frequency decreasing, the temperature of indoor heat exchanger rises to
“anti-freezing frequency decreasing temperature”.
²
Condition 2
:
in normal operation, the temperature of indoor heat exchanger reaches “anti-freezing prohibition of
frequency rising temperature
”.
If either of the above two conditions is met, the product will enter anti-freezing prohibition of frequency rising state.
Anti-freezing prohibition of frequency rising operation: the compressor is kept at the current frequency, which may
decrease according to situations while cannot rise. The outdoor fan runs.
• Condition for the end of anti-freezing prohibition of frequency rising state:
when the temperature of indoor heat
exchanger rises to “anti-freezing releasing temperature”, the state of anti-freezing prohibition of frequency rising is
released.
• Conditions for defrosting:
A › When the heating compressor consecutively runs for 40 minutes (EEPROM setting value at the current
operating mode);
B
› If the ambient temperature minus the temperature of coiled pipe is equal to or higher than six degrees
centigrade (EEPROM setting value in the current operating mode);
C
› If the temperature of coiled pipe is equal to or lower than minus two degrees centigrade (EEPROM setting
value in the current operating mode);
If the above three conditions are met simultaneously, defrosting begins.
• Defrosting actions:
The compressor stops, and the outdoor fan stops after delay of 30 seconds; in 50 seconds the four-way valve is
power off; and in 10
seconds the compressor starts and runs at “defrosting frequency”.
Conditions for ending defrosting:
Defrosting is over if either of the below conditions is met.
A
› The accumulated time of defrosting is longer than 12 minutes (EEPROM setting value in the current
operating mode);
B
› If the temperature of coiled pipe is equal to or higher than 14 degrees centigrade (EEPROM setting value in
the current operating mode);
• Actions of exiting the defrosting state:
The compressor stops, and 50 seconds later the four-way valve opens, and another 10 seconds later the
compressor and outdoor fan restart and begin normal operation.
