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7.Functions and Control
7.1 The control system of outdoor unit
7.1.1 The operation frequency of outdoor unit and its control
7.1.1.1 The operation frequency control of compresso r
The operation frequency scope of compressor
Mode
H
e
t a
n i
g
R
e
r f
g i
r e
t a
o i
n
7.1.1.2 The starting of compressor
When the compressor is started for the first time, it must be kept under the conditions of
30Hz,40Hz,58Hz for one minute (the overheating protection of the outdoor unit air-blowing temperature,
immediately decrease the frequency when the compressor is overflowing and releasing the
pressure) then it can be operated towards the target frequency. When the machine runs normally,
there's no such process. After starting the compressor for operation, the compressor should run
according to the calculated frequency, and every determined frequency for protection should be
prior to the calculated frequency.
7.1.1.3 The speeds of increasing or decreasing the frequency of the compressor
The speed of increasing or decreasing the frequency rapidly 1 -----------1HZ/second
The speed of increasing or decreasing the frequency slowly 2 -----------1HZ/10seconds
7.1.1.4 The calculation of the compressor's frequency
1
The minimum/maximum frequency limitation
A
While refrigerating:
compressor;
B While heating:
IN
1
The frequency limitation which is affected by the environment temperature.
Heating mode:
Serial
No.
1
2
3
4
5
6
7
8
Minimun operation frequency
3
0
H
z
2
5
H
z
IN
is the minimum operation frequency of the compressor.
is the minimum operation frequency of the compressor.
Temperature scope
Wh_c<-12
Wh_c<-8
Wh_c<-2
W
h
_
c
<
5
Wh_c<10
Wh_c<16
Wh_c< 20
Wh_c> 20
Maximun operation frequency
1
1
8
H
z
8
0
H
z
is the maximum operation frequency of the
is the maximum operation frequency of the compressor;
Frequency limitation
Max_hz1
118HZ
Max_hz2
118HZ
Max_hz3
118HZ
M
a
x
_
h
z
4
1
Max_hz5
118HZ
Max_hz6
118HZ
Max_hz7
Max_hz8
16
Functions and control
1
8
H
Z
112HZ
102H Z
Domestic air conditioner
.
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