Shivaki SSH-PM074DC - 6-2. Outdoor Mode Control

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6-2 Outdoor mode control （AMW2-16U4SGC1、AMW2-20U4SNC1、
AMW3-20U4SZD、AMW3-24U4SZD、AMW3-24U4SKC、AMW4-28U4SKC、
AMW4-36U4SAC）
Summarization
This direction applies to multi-type and DC variable frequency air conditioner
Performance index
1. Voltage scale: 176V～264V，50Hz
2. Storage temperature scale: -40℃～85℃
3. Storage humidity scale: PH30％～PH95％
4. Working temperature:-20℃～85℃
5. accuracy for temperature control： ±0.5℃
3．Control function
Cooling Anti-freeze Protection
To prevent freezing caused by too low temperature of indoor evaporator, the air
conditioner will implement real-time detection over the indoor coil temperature. If the indoor
coil temperature is too low, the compressor will be prohibited from increasing the frequency or
decrease the frequency even shut down automatically
Heating Overload Protection
To prevent system overload caused by excessive pressure in heating operation, the
machine will implement real-time detection over the indoor fan-coil temperature:
If the indoor coil temperature grows higher, the compressor will be prohibited from
increasing the frequency; If the temperature continues to rise, the compressor will decrease
the frequency; If the indoor coil temperature is too high, the compressor will stop working
immediately. The compressor then will reboot after the indoor coil temperature reduces.
Cooling Overload Protection
To prevent system overload due to excessive pressure during cooling operation, the
machine will implement real-time detection over the outdoor condenser coil temperature: