Operation Modes And Functions - Midea MS11M-09HRFN1-BW0W Service Manual

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:
T 1
a
b
c
d
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 >-0.5℃(31.1° F),，the compressor
S
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.
8.4.2.2 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
T 4
A +
A
B
C
D
E
8.4.2.3 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
T1-Td ℃(° F)
speed
H
M
L
The auto fan acts as below rules:
T 1
a
b
c
d
e
8.4.2.3 Condenser temperature protection
T 3
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
8.4.3 Heating Mode
8.4.3.1 Compressor running rules
When T1-Ts>-ΔT, the compressor will stop,
<ΔT-1.5， the compressor will be on.
when T1-T
S
ΔT is the programmed parameter of
temperature compensation.
18
Actual fan speed
H+(H+=H+G)
A H（=H）
B
H-（H-=H-G)
C
M+(M+=M+Z)
D M(M=M)
E
M-(M-=M-Z)
F
L+(L+=L+D)
G L(L=L)
H
L-(L-=L-D)
I
O f f
D e c r e a s e
H o ld
R e s u m e