Haier HSU-12LEK03-Y2 Service Manual page 15

Trial run function When the air conditioner is in OFF state, press the emergency switch for 5 seconds till
hearing 2 sounds of click from the buzzer, then the air conditioner will turn to the trial run
state. The unit will run in the refrigerating mode and the indoor fan will run in high wind
speed mode.
When the air conditioner is in stand-by state, press the emergency switch till hearing a
sound from the buzzer, then the air conditioner will turn to the emergency run state. The
Emergency
running mode rules of emergency run are as follows:
After setting the sleeping function, the refrigerating mode and dehumidification mode will
run as per the following rules:
Sleeping function
As shown in the above diagram, after running for 1 hour under refrigerating mode and
dehumidification mode, the setting temperature will increase 1 ; after another 1 hour, it
will increase 1
HSU-12LEK03-Y2
Tr 23 , running refrigerating mode, Ts = 26 ;
Tr<23 , running blowing mode, Ts = 23 .
T( )
Ts+2
Ts+1 1 hours
Ts
Sleep
again, and after 6 hours, it will cease;
6hours
1 hour
12
Functions and control
OFF t(hour)
Domestic air conditioner