The maximum frequency value refers to the max value listed above. 
The maximum and minimum values for cooling and heating are the maximum and 
minimum values for correspondent items. 
2.4.7 Controlled frequency for the same level 
The indicated frequency when a level remains unchanged after the compressor 
operates with the same frequency for 3 minutes. 
The timing will start again when there is a different frequency input.  If the 
temperature level remains unchanged for 3 minutes, the indicated frequency will 
change again (add FQUPH or FQUPL) 
 Controlling form for the same level 
 
Levels of temperature change  
 
 
A
B
C  D  E  F  G  H
Heating 
   
           
Cooling 
moisture 
 
   
           
 
2-4-8. Select the wind volume when it is set automatic  
When the wind volume is automatic, it can be switched between strong, medium 
and weak according to the temperature adjusting levels. 
Wind volume under the automatic wind volume mode 
 
Temperature adjusting levels 
 
A  B  C  D  E  F  G  H  I 
 Heating  Str
on
g 
Stro
ng 
Stro
ng 
Stro
ng 
Stron
g 
Med
ium 
Wea
k 
Wea
k 
SLO 
 cooling    Stro
ng 
Stro
ng 
Stro
ng 
Medi
um 
Med
ium 
Wea
k 
Wea
k 
Weak
  Moisture 
removing 
  Stro
ng 
Med
ium 
Med
ium 
Medi
um 
Wea
k 
Wea
k 
SLO
SLO 
 
2-5. Frost removing 
Under  the intensive-running protection mode, the protection control will be in 
priority   
The compressor does not stop  
Under heating operation mode, the outdoor unit sends a frost-removing signal 
(I21=10) and the indoor unit will start the frost-removing control until the outdoor 
unit transmits the signal to end the frost-removing. Then the indoor unit starts the 
heating operation, indication levels and wind volume control will operate following 
the heating temperature levels. 
2-6. Wind volume limit 
. When the compressor is working and the max setting for indoor blower fan is 
medium , the upper limit of indicated frequency is as follows: 
26
 
Model:
HSU-12HS03/R2(DB)
HSU-09HS03/R2(DB)Domestic Air Conditioner