Domestic Air Conditioner
5.1.2.2 When the compressor stops and remains idle for 3 minutes 
20 seconds after the compressor stops, the up wind volume is weak (switching to SSLO in silent 
running mode) and then slightly weak. While the down wind volume is stoped 
If the compressor stops when the heat running starts, the wind volume is weak   
5.1.2.3 Dehumidification running 
Under the dehumidification mode the fan motor stops as the compressor stops 
The operation is weak after 3 minutes’ idle mode   
After stand by for 3 minutes, the compressor is on. 
The compressor operates as the set wind volume when the wind volume is set to be strong, medium 
or weak 
The wind volume is decided according to the temperature adjusting when the wind volume is set to be 
automatic. 
Moisture removing running 
 Level H         3minutes idle mode 
Compressor 
OFF 
Setting  slightly        OFF       weak              weak         setting 
                weak 
5.1.2.4 Automatic running 
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.
5.1.3 Special functions 
5.1.3.1 Powerful running 
Powerful running for 15 minutes 
The running stops or ends the powerful running after 15 minutes 
The mode switch ends the powerful running 
Enter into the silent mode, normal running mode or timed switching on mode to end the powerful 
running  
When in automatic mode, there are powerful and silent functions for your choice. When the main unit 
21
HSU12/18VHJ(DB)