Haier HSU-12H03/R(QXF) [14/109] Functions and control
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Haier HSU-12H03/R(QXF) [14/109] Functions and control

Haier HSU-09H03/R(QXF) [14/109] Functions and control
HSU-09/12H03/R(QXF) Functions and control
11
Domestic Air Conditioner
5ˊFunctions and control
5.1 main functions and control specifications
Including brief introduction to air conditioners of series models and electric control function.
Automatic running
Indoor
temperature
control
Dehumidification
running
When the system runs under "automatic" mode for the first time, it will determine the
operating mode according to the follows,
TrTs-3 Choose Cooling Modeć
Tr˘Ts-3ć Choose Heating Mode
The system will shift its operating mode between the above mentioned two to changes of
the indoor temperature. If the system is currently under cooling mode, the compressor
will stop functioning if the temperature lowers to such a degree that requires so; then it
will recheck the temperature 15 minutes later: it will switch to the heating mode if the
temperature is Tr˘Ts-3 ,or it will still stay in cooling mode(including blowing mode). if ć
the system is currently under heating mode, the compressor will stop running if the
temperature lowers to such a degree that requires so, then it will recheck the
temperature 15 minutes later: it will switch to the cooling mode if the temperature is Tr
˚Ts+3 .ć
Temperature control range : 16ć—30ć
Temperature control precision: ±1ć
Compressor can’t be controlled by temperature sensor within 2 minutes after it starts
ķ Cooling mode:
When Tr> Ts, outdoor fan motor and compressor on, and indoor fan motor run at fixed
wind speed. When Tr < Ts, outdoor fan motor and compressor off, and when Tr > Ts,
outdoor fan motor and compressor are working again .If Tr=Ts, the indoor fan motor ,
outdoor fan motor and the compressor’s state will not change.
ĸ Heating mode:
When Tr ≤ Ts, compressor, four-ways valve and outdoor fan motor is on, indoor fan
motor runs as in cold blast avoidance mode, and 4ćof compensation is added after
compressor is started.
When Tr>Ts+5ć, compressor is off, and the indoor fan motor runs as in cold blast
avoidance mode.
When Tr<Ts+5ć, compressor, four-ways valve and outdoor fan motor is on, and the
indoor fan motor runs as in the mode of avoiding cold blast.
The compressor, outdoor fan and indoor fan will run as per the following
working pattern so as to realize the refrigerating running of dehumidification:
ķ Tr> Ts+2 , compressor, outdoor fan run continuously, indoor fan runs as per setting ć
wind speed (State 1);
ĸ Ts+2 TrTs, compressor, outdoor fan run intermittently with 10ć
minutes ON, 6 minutes OFF. (Compressor and outdoor fan are synchronous)
indoor fan runs in fixed lower wind speed, and will cease at the stand-by time of
3 minutes (State 2)
Ĺ
Tr <Ts, compressor, outdoor fan ceases, indoor fan runs in lower wind
speed. (State 3)

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