Functions and Control
7.1The control system of outdoor unit
7.1.1 The operation frequency of outdoor unit and its control
The operation frequency scope of compressor
Mode Minimum operation frequency Maximum operation frequency
zH69zH43gnitaeH
zH27zH43noitaregirfeR
When the compressor is started for the first time, it must be kept under the conditions of
34Hz,56Hz,82Hz 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.
The speed of increasing or decreasing the frequency rapidly 1 -----------1HZ/second
The speed of increasing or decreasing the frequency slowly 2 -----------1HZ/10seconds
1
The minimum/maximum frequency limitation
A
While refrigerating: is the maximum operation frequency of the
compressor;
IN is the minimum operation frequency of the compressor.
B
While heating: is the maximum operation frequency of the compressor;
IN is the minimum operation frequency of the compressor.
1
The frequency limitation which is affected by the environment temperature.
Heating mode:
Serial
No.
Temperature scope Frequency limitation
1 Twh <-12 Max_hz8 120HZ
ZH0217zh_xaM8-<hwT2
ZH0214zh_xaM2-<hwT3
ZH0215zh_xaM5<hwT4
5
5<Twh
12
Max_hz1 100HZ
6
12<Twh
18
Max_hz2 56HZ
ZH836zh_xaMhwT<817
Remarks: Twh :the environment temperature of outdoor;
The above are the maximum frequency limitations of the complete appliance which are
affected by the environment, and they have nothing to do with the ability of the indoor unit.
Refrigeration/dehumidification mode:
7.1.1.1 The operation frequency control of compressor
7.1.1.2 The starting of compressor
7.1.1.3 The speeds of increasing or decreasing the frequency of the compressor
7.1.1.4 The calculation of the compressor’s frequency
Domestic air conditioner
7 Founction and Control
15
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