Air-Con ABXCI4H4S0, Service Manual, Page: 25 / 70

25
3-7 Heating-run mode
3-7-1 Temperature compensation
The temperature compensation is 5º in heating mode. For example, if the set temperature is
25
℃
(77°F) by the remote control, when the room temperature is detected with 31
℃
(88°F), the
compressor will turn off. The main reason is that the hot air is condensed at the top of the house.
Note: The compensation is available only if the room temperature sensor of indoor unit is used
and it is not available when it is subject to the sensor on the remote control.
3-7-2 Indoor fan motor operation
Anti-cold air system:
When the appliance run in Heat mode condition, the indoor fan motor operation is shown as
following to prevent the cooling air come out during the appliance operation.
When the appliance turn in the anti-cold air system in the Extra-LOW (Tapped motor set in LOW,
sic passim) during the compressor operation, the louver swang to the Cool air protection position, the
louver recovers to the original position after the air volume change to LOW. When the room
temperature reach to the setting temperature, the compressor will be turn off, and the air flow
change to LOW, the louver swang to the Cool air protective position to prevent the air drop into
human body directly; when the indoor pipe coil temperature drop continuously, it will turn in the
Cooling air protective system in the Extra-LOW or stop the fan motor.
The indoor fan motor is only controlled by the signal of indoor pipe coil temperature, no matter
the compressor turn ON/OFF, even the appliance turn in Heat mode at first time.
The indoor fan motor will operate according to the different setting(High, Median, Low and
Automatic) by the remote control, but the anti-cold air system is prior.
When the appliance run in the Heat mode with the Automatic setting at first time, the fan speed
will be in the LOW setting, and the operation diagram is shown as following