1. Introduction of electric control function
1.1 Brief introduction of electric control function
(1) Auto running (available for cooling and heating type)
When Auto running starts for the first time, selection of running mode follows the
conditions below:
Tr > 23℃ Select cooling mode Set temperature: 26℃
Tr≤23℃ Select heating mode (with temperature compensation) Set temperature: 23℃
In auto mode, running mode shifts between cooling and heating with the variation of
(2) Room temperature control
Compressor ON Compressor OFF
Heating
Set temperature
Compressor OFF Compressor ON
Cooling
Set temperature
(3) Dry running
Compressor, outdoor fan and indoor fan run as follows (Tr, room temperature, Ts, set
temperature). When dry mode starts for the first time, compressor, outdoor fan and indoor
fan will run following the rules below:
① Tr>Ts+2℃， compressor, outdoor fan run successively, indoor fan run at set speed,
this working area is defined as area A.
② Ts ≤Ｔｒ≤Ｔｓ＋2℃， compressor, outdoor fan will run for 10 minutes and stop for 6
minutes, indoor fan will run at low speed, this working area is defined as area B.
③ Tr<Ts, compressor, outdoor fan will stop running, indoor fan will run at low
speed, this area is defined as area C.
In dry mode, system will shift between area A, B and C variation with room ambient
temperature. When Tr<Ts+1, system will shift from area A to B; when Tr>Ts, system
will shift from area C to B; when Tr>Ts+3, system will shift from B to A; when
Tr<Ts-1, system will shift from area A to C.
(4) Cool- air proof in heating
In heating, every time starts compressor, indoor fan will stop running if room coil
temperature is less than 28℃; indoor fan will run at low speed if room coil temperature is
equal to or more than 28℃ and less than 38℃; indoor fan will run at set fan speed if
room coil temperature is more than 38℃ or compressor has run more than 4 minutes.
(5) Residual heat air discharging in heating
In heating, compressor stops, indoor fan stops after a 30-second low running.
(6) Defrosting control
Domestic Air Conditioner
Model: HSU-24H03/Z
Model: HSU-24C03/Z
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