14
Technical Information
Service Manual
5.2 Brief Description of Modes and Functions
A
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1.Cooling Only
(1)  Under this mode, fan and swing run at preset status, the temperature setting range is 16-30ć. 
(2)  Under malfunction for outdoor unit and protection stop, the indoor unit runs with the original status, and display malfunction. 
(3)  The indoor fan stops when the modes conflict with each other. 
2. Dry Mode 
(1) Under this mode, the indoor fan runs with low speed, and swing runs at preset status, the temperature setting range is 16-30 
(2)  Under malfunction for outdoor unit and protection stop, the indoor unit runs with the original status, and display malfunction. 
3. Heating Mode 
(1) Under this mode, the temperature setting range is 16-30ć. 
(2) Working condition and Process of Heating 
When  the unit  is  ON  and  in heating  mode,  indoor  fan  starts  cold  air  prevention operation;  when  the unit  is off  and  the 
indoor fan stopped before, it  blows residual heat. 
(3)  Protection  Function.  The  compressor  stops  as  the  malfunction  (including  any  temperature  sensor  malfunction)  in 
heating mode, the indoor fan runs with blowing residual heat
 
(4) Defrosting and Oil Return
 Once defrosting singnal of outdoor unit is received,Heating indicator on indoor unit OFF 0.5s and ON 10s.
ć.
4. Working Methods of Auto Mode  
(1) When Tamb.≥26ć
, it operates in Cool mode. 
(2) For heat pump unit, when Tamb.≤22ć, it operates in Heat mode. 
(3) When 22ć< Tamb.< 26ć, it operates in auto fan mode upon initial startup of the unit. When changing to auto mode from 
other modes, it will keep the previous operation mode (when it enter Dry mode, it operates in auto fan mode.). 
5. Fan Mode 
Only indoor fan operates in Fan mode. Under auto fan speed, it runs in cooling auto fan mode.