Electrical Control Function
Electrical Control System 119
18~60K
T4
A+
A
B
C
D
E
F
G
H
J
1.3.2.3 Indoor fan running rules
In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low, auto and
silent. When the compressor is running, the indoor fan is controlled as below:
Setting fan
speed
Actual fan speed
H+(H+=H+G)
AH（=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-Td
e
H
(H-L)*0.75+L
(H-L)*0.5+L
(H-L)*0.25+L
L
1.3.2.3 Evaporator low temperature T2 protection.
---T2<0℃, the compressor will stop and restart when T2>=5℃.
---0℃≦T2<4℃, the compressor frequency will be limited and decreased to the lower level
---4℃≤T2<7℃, the compressor will keep the current frequency.
---T2>7℃, the compressor frequency will not be limited.
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