Functions and control
7.1.3
：
The control of the outdoor electronic expansion valve
When starting the compressor: the opening size of the valve must be guaranteed to have entered into the
standard opening size, and then the compressor can be started.
When refrigeration is in vain (the machine is shut down or is in the state of retrograde operation), the opening
size of the expansion valve of the indoor unit is 5 steps;
When heating is in vain, the opening size of the expansion valve of the indoor unit is 55 steps;
When the outdoor unit is shut down, the valve is opened completely for 2 minutes, and then begin
initialization.
The scope of refrigerationg valve 90-----480 steps
The scope of heating valve 60-----480 steps
The valves are adjusted according to the degree of superheat —SHa
，△
SHa.
7.1.4
：
Four way control
For the details of defrosting four-way valve control, see the defrosting process.
Four way working in other ways:
Under the mode of heating, open the four-way valve, when the compressor is not started or changed to
non-heating mode, make sure the compressor is stoped for 2 minutes, and then close the four-way valve.
Domestic air conditioner
17
1
9
During the compressor is started for 3 seconds, the outdoor fan is controlled the airflow speed
according to the temperature conditions of the outdoor environment.
Tao
（℃）
Tao <
22
℃
22
℃
5<
Tao
<29
℃
5
Tao
≥
29
℃
5
7
l
e
v
e
L
5
l
e
v
e
L
3
l
e
v
e
L
y
r
D
/l
o
o
C
Tao
（℃）
Tao <
10
℃
10
℃
<
Tao
<16
℃
Tao
≥
16
℃
3
l
e
v
e
L
5
l
e
v
e
L
7
l
e
v
e
L
t
a
e
H
After the compressor is started for 3 seconds, the outdoor fan is controlled the airflow speed
according to the temperature conditions of the outdoor environment and frequency of compressor.
Frequency of cooling mode
（
Hz
）
<51
51
∽
70
≥
70
Tao
（℃）
≤2
2
Level 3
Level 5
Level 6
22
∽
29
Level 4
Level 6
Level 7
≥2
9
Level 7
Frequency of heat mode
（
Hz
）
<51
51
∽
90
≥9
0
Tao
（℃）
≤
10
Level 5
Level 7
Level 7
10
∽
16
Level 4
Level 5
Level 5
>16
Level 2
Содержание 1U53RA1ERA
Страница 13: ...Pinping diagrams Domestic air conditioner 4 Pinping diagrams 11 EXV EXV...
Страница 14: ...Operation range Domestic air conditioner 5 Operation range 12 10 0 20 16 32 10 20 15...
Страница 17: ...Connector Wiring Diagram Domestic Air Conditioner 15 PCB 2 18 24K CN4 CN3 CN11 CN10 CN1 CN2 CN9 CN7 CN6 CN5 CN8...
Страница 67: ...Circuit diagrams Domestic air conditioner 13 2 Module board Circuit Diagram 65...
