Airwell 7SP023034, Service Manual

Page: 40 / 80

ELECTRONICS FUNCTION
Version - 1 40 HND DCI
speed according to T4.
For different outdoor units, the fan speeds are
different.
T4
A+
A
B
C
D
E
10.4.2.3 Indoor fan running rules
In cooling mode, indoor fan runs all the time
and the speed can be selected as high,
medium, low 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
10.4.2.4 Condenser temperature protection
T3
Resume
Off
Decrease
Hold
When condenser temperature temp. is more
than setting value, the compressor will stop.
10.4.2.5 Evaporator temperature protection
When Evaporator temperature temp.is less
than setting value, the compressor will stop.
10.4.3 Heating Mode
10.4.3.1 Compressor running rules
When T1-Ts>-
ΔT, the compressor will stop,
when T1-T
S
<ΔT-1.5
，
the compressor will be on.
ΔT is the programmed parameter of
temperature compensation.
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.
10.4.3.2 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
E
D
C
B
A
A+