13.5 Cooling overload control (Cool)
∙This control detect outdoor pipe temperature and perform the compressor frequency restriction during cooling operation.
13.6 Heating overload control (Heat)
∙This control detect indoor pipe temperature and perform the compressor frequency restriction during heating operation.
∙This control detect outdoor ambient temperature and perform the fan speed adjustment during heating operation.
13.7 Extreme Low Temperature Compressor low pressure protection control (Heat)
∙This control is to prevent low pressure drops too low during extremely low outdoor ambient temperature to improve the compressor reliability.
∙During heating operation, when outdoor ambient temperature is in Zone 1, this control will be activated. Compressor frequency restriction will be based on outdoor piping temperature.
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