Haier U Series Service Manual page 19

Warm boot When the heat running starts or the frost removing ends and the compressor starts again, in order to
avoid cold wind, warm boot wind volume control should be done.
Heat exchange temperature
To control the indoor blower fan as shown in the table above according to the heat exchange
temperature
When the heat exchange temperature rises to the level between THHOT1 and HHOT2 and even
after 4 minutes it cannot reach the level between THHOT2 and THHOT3, enter into the next level
without referring to the heat exchange temperature.
the blower fan stops when the heat exchange temperature is below 25
the blower fan is working slightly weak when he heat exchange temperature is above 25
below 35
the blower fan is working weak if the he heat exchange temperature remains 35
minutes.
The blower fan works as set if the he heat exchange temperature remains 35
minutes
the blower fan works as set if the he heat exchange temperature remains above 37
Note: the numerical value above may not the same as the numerical value in indoor MCU.
the compressor 20 seconds after the compressor stops, the wind volume is weak(switching
stops and to SSLO in silent running mode)and then slightly weak.
remains for If the compressor stops when the heat running starts, the wind volume is
idle 3 minutes weak
The wind volume is set by the remote-controler after the warm boot.
Restart of
the compressor select the wind volume by the temperature in the automatic wind volume mode
Refer to the temperature level control function
the indoor fan stops running in frost-removing mode.
Frost-removing
When the frost-removing process is over, the compressor is on,the wind volume control is the same
Operation
with warm boot
The wind volume can be set to strong, medium and weak.
cooling
Automatic wind volume function will decide the wind volume according to the temperature
running
The wind volume can be set to strong, medium and weak.
Moisture
The wind volume is decided according to the temperature adjusting when the wind volume is
removing
set to be automatic.
running
HSU-09,12H03/U(DBPZXF)
16
Functions and Control
and
for less than 4
for more than 4
Domestic Air Conditioner