31
Service Manual
Technical Information
(1)Models: AED07KP,AED09KP,AED12KP
1 Basic Functions 
1.1 Cooling Mode 
1.1.1 Working conditions and process for cooling
 
When  T
indoor  ambient
≥T
preset
+2 (1 ),  the  unit  will  start  working  in  cooling  mode.  Meanwhile,  compressor  will  be 
will run at set fan speed. 
T
indoor ambient
  T
preset
 -2 (1   ), compressor will stop running, while indoor fan will run at the set fan speed.
T
preset
 -2 (1 )< T
indoor ambient
 <Tpreset+2 (1 ), the unit will keep previous running status. 
1.1.2 In this mode, the temperature setting range is 61
~86 (16~30 ). 
 
Working conditions and process for drying 
When T
indoor ambient
 > T
preset
 +4 (2 ), the unit will run according to the cooling mode and the fan will run at low fan 
When Tpreset-4 (2 )T
indoor ambient
T
preset
 +4 (2 ), the unit will run in dry mode and the fan will run at low fan 
will run for 6mins and stop for 4mins, and then it runs like that circularly. 
T
indoor ambient
 < T
preset
 -4 (2 ), compressor will stop running, while the fan will run at low fan speed. 
1.2.2 In this mode, the temperature setting range is 61
~86 (16~30 ). 
ving Mode 
Working conditions and process 
T
indoor ambient
≥T
preset
 +2 (1 ), compressor will be turned on and the fan will run at set fan speed. 
When T
indoor ambient
T
preset
 -2 (1 ), compressor will stop running, and the indoor fan will also stop running  after 
running at set fan speed for 60s. 
c) When 
T
preset
 -2 (1 )< T
indoor ambient
 < T
preset
 +2 (1 ), the unit will keep previous running status. 
1.3.2 In this mode, the temperature setting range is 61
~86 (16~30 ). 
 
In this mode,  compressor   tube will also  stop running,  while the fan  will run at  set fan speed.  
The temperature setting range is 61 ~86 (16   ~30   ). 
Auto Mode 
T
ambient
≥79(26 ), the unit is running according to cooling mode, T
preset
=77(25 ). 
When  T
preset
=68(20 ); if it’s the cooling only controller, the unit will run according to fan mode, T
preset
=68(20 ).
When 72 (22 )<T
ambient
<79(26 ), the unit will keep original running status; if the unit is energized for the 
first time, the unit will run at fan mode. 
6.2 Description of Each Control Operation