Airwell 7SP023054, Service Manual

Page: 31 / 69

ELECTRONIC FUNCTION
HKD DCI 31 Version - 1
9.4.2.4 Condenser temperature
protection
T3
Resume
Off
Decrease
Hold
Increase
When condenser temperature temp. is more
than setting value, the compressor will stop.
9.4.2.5 Evaporator temperature
protection
When Evaporator temperature temp.is less than
setting value, the compressor will stop.
9.4.3 Heating Mode
9.4.3.1
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.
9.4.3.2 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
9.4.3.3 Indoor fan running rules
When the compressor is on, the indoor fan can
be set to high/med/low/auto/mute.
When indoor unit coil temp. is low, the anti-cold
air function will start and indoor fan motor will run
at low speed, the speed can
’t be changed ,when
the temp. is lower than setting value, the indoor
fan motor will stop.
When the indoor temp reaches the setting temp.,
the compressor will stop, the indoor fan motor
will run at the minimum speed or setting
speed.(The anti-cold air function is valid).
The indoor fan is controlled as below:
Setting fan
speed
Actual fan speed
H
（
=H
）
H+(H+=H+G)
M(M=M)
M+(M+=M+Z)
L(L=L)
L+(L+=L+D)
H-
（
H-=H-G)
M-(M-=M-Z)
L-(L-=L-D)
T1-Td
℃
L
H
M
-
Auto fan action in heating mode: