Haier AP242ACAAA Technical Manual page 38

7. Electric controllable function instruction
Describe serial air conditioner model and electric controllable function.
(Note: Outdoor fan motor of cabinet air conditioner 5P is single speed)
7.1 Brief instruction of electric controllable function
(1) Automatic running (Applies to cooling and heating model)
After starting the machine, system changes over automatic mode. Before running ,
system will determine firstly operation mode according to present room temperature.
Tr is room temperature in the following selectable conditions:
Tr 24 , start cooling operation mode, equivalent to cooling mode at setting
temperature 26 .
20 <Tr<24 , start air supply condition, run in air supply mode.
Tr 20 ,start heating condition, operation mode is equivalent to heating mode at
setting temperature 18 .
Operation mode will switch over from cooling, air supply to heating as the room
temperature changes.
(2) Room temperature control
Compressor on
Heating
(3) Dehumidification
According to the following operational rules, compressor, indoor and outdoor fan
motor realize dehumidified cooling function(Tr is room temperature, St is setting
temperature in the following selectable conditions) :
Tr > St+2 , compressor , outdoor fan motor run continuously and indoor fan
motor run at setting speed. (state 1)
St+2 Tr St, compressor, outdoor fan motor run interruptedly, 10
minutes on and 6 minutes off , (compressor and outdoor fan motor run
synchronously) indoor fan motor run at setting low fan speed.(State 2)
Tr<St, compressor and outdoor fan motor stop running, indoor fan motor run
at low fan speed .(state 3)
State 3
When dehumidification function is on , running rules of indoor fan motor at
automatic fan speed are as follows:
Tr>St+5 , fan motor is at high speed;
St+5 Tr>St2 , fan motor is at medium speed;
Tr St+2 , fan motor is at low speed
Note: At automatic state, the fan speed shall not switch over frequently , change
from low to high shall spend three minutes and from high to low without time lapse.
L
Compressor off
+1
-1
Setting temperature
State 2
St-1 St St+2
M
St+2 St+3 St+5
28
Compressor on
Compressor off
cooling
-1
Setting temperature
State 1
St-3
H
St+6
+1