Carrier 38QUS012D8S - Page 101

Electrical Control Function
Electrical Control System 99
Frequency of
compressor operation
B
C
A
A+
24~60K
T4
A+
A
B
C
D
E
F
G
H
I
1.3.2.3 Indoor Fan Running Guidelines
In cooling mode, the indoor fan runs continuously and You can select the following speeds: high, medium,
low, auto or silent. When the compressor is running, The indoor fan is regulated as illustrated as in the
following figure:
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 in cooling mode acts as follows: