21
8.4 Operation Modes and Functions 
8.4.1 Fan mode 
(1) Outdoor fan and compressor stop. 
(2) Temperature setting function is disabled, 
and no setting temperature is displayed. 
(3) Indoor fan can be set to high/med/low/auto. 
(4) The louver operates same as in cooling 
mode. 
(5) Auto fan: 
a
b
c
d
T1
e
 
 
8.4.2 Cooling Mode 
8.4.2.1 Compressor running rules 
When T1-Ts<-2℃(28.4°F), the compressor will 
stop, 
when T1—T
S
>-0.5℃(31.1°F),,the compressor 
will be activated. 
When the AC run in mute mode, the 
compressor will run with low frequency. 
When the current is more than setting value, 
the current protection function will be activated, 
and the compressor will stop. 
 
8.4.2.1 Outdoor fan running rules 
The outdoor unit will be run at different fan 
speed according to T4. 
For different outdoor units,the fan speeds are 
different 
T4
A+
A
B
C
D
E
 
8.4.2.2 Indoor fan running rules 
In cooling mode, indoor fan runs all the time 
and the speed can be selected as high, 
medium, low and auto. 
When the setting temp. is reached,if the 
compressor stop running,indoor fan motor will 
run in Minimum speed or setting speed. 
The indoor fan is controlled as below: 
Setting fan
speed
Actual fan speed
H+(H+=H+G)
A H(=H)
B
C
M+(M+=M+Z)
D M(M=M)
E
F
L+(L+=L+D)
G L(L=L)
H
I
T1-Td 
℃
(°F)
L
L-(L-=L-D)
H
H-(H-=H-G)
M
M-(M-=M-Z)
 
The auto fan acts as below rules: 
a
b
c
d
T1
e
 
 
8.4.2.3 Condenser temperature protection 
T3
Resume
Off
Decrease
Hold
 
When condenser temperature temp. is more 
than setting value, the compressor will stop. 
 
8.4.2.5 Evaporator temperature protection 
When Evaporator temperature temp.is less 
than setting value, the compressor will stop