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Functions and control
Domestic air conditioner
7. Functions and Control
7.1 Main functions and control specification
7.1.1 The operation frequency of outdoor unit and its control
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
15
The operation frequency scope of compressor˖
Mode Minimun operation frequency Maximun operation frequency
zH811 zH02 gnitaeH
zH09 zH 02 noitaregirfeR
When the compressor is started for the first time, it must be kept under the conditions of 58Hz,88Hz 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)ˈthen 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˅ǃThe minimum/maximum frequency limitation
AˊWhile refrigerating: ˢˉ˩˝˴ˉ is the maximum operation frequency of the compressor; ˢˉ˩
INˉ is the minimum operation frequency of the compressor.
BˊWhile heating: ˢˉ˩˝˴ˉ is the maximum operation frequency of the compressor; ˢˉ˩INˉ
is the minimum operation frequency of the compressor.
1˅ǃThe frequency limitation which is affected by the environment temperature.
Heating mode:
Serial No. Temperature scope Frequency limitation
1 Wh_c<-12 Max_hz8 117 HZ
ZH7 11 7zh_xaM 8-<c_hW 2
ZH 711 4zh_xaM 2-<c_hW 3
ZH99 5zh_xaM 5<c_hW 4
ZH09 1zh_xaM 01<c_hW 5
ZH 72 2zh_xaM 71<c_hW 6
ZH 26 2zh_xaM 02<c_hW 7
8
Wh_c
≥20
Max_hz6 45 HZ
Remarks: 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::
Serial No. Temperature scope Frequency limitation
ZH 83 1zh_xaM 61<c_hW 1
ZH 44 1zh_xaM 22<c_hW 1
ZH 55 1zh_xaM 82<c_hW 1
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