Domestic Air Conditioner
5.Funcitions and Control
5.1 Main functions and control specification of indoor unit
5.1.1 Automatic operation
When the running mode is turned to automation after starting the system, the system will first
determine the running mode according to the current room temperature and then will run according to
the determined mode. Tr in the following selection conditions means room temperature, Ts means
setting temperature, Tp means temperature of indoor coil pipe
Tr23 Choose Cooling Modeć
Tr˘23 Choose Heating Modeć
After turning to the automation mode, the running mode can be switched between cooling mode, fan
mode and heating mode according to the change of the indoor ambient temperature. But the
automatic conversion between cooling mode and heating mode must be conducted after 15 minutes.
5.1.2 Cooling operation mode
Temperature control range: 16ć---30ć
Temperature difference: " 1ć
* Control features: When Tr˄input airflow˅>Ts˄set temperature˅ , the compressor will be opened,theć
indoor fan will operate at the set speed and the mode signal will be sent to the outdoor system. When
Tr˄input airflow˅" Ts˄set temperature˅ , the compressor will be opened,the indoor fan will operateć
at the set speed and the mode signal will be sent to the outdoor system. The system will keep the
original status if Tr= Ts.
Airflow speed control: (temperature difference 1 )ć
Automatic: When Tr>=Ts+3 , high speed.ć
When Ts+1 =<Tr<Ts+3 , medium speedćć
When Tr<Ts+1 , low speedć
When the sensor is off, low speed
When the airflow speed has no delay from the high to low switching, the speed should be delayed for
3 minutes (remain at high speed for 3 minutes.) before the next switch.
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AS09/12GS2ERA 1U09/12BS1ERA-SM
Function and control
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