Panasonic S-71WF3E - Cooling Overload Control (Cool); Heating Overload Control (Heat); Extreme Low Temperature Compressor Low Pressure Protection Control (Heat)

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19.4 Cooling overload control (Cool)
 This control detect compressor discharge pressure and perform the compressor frequency restriction during
cooling operation.
Comp stop
Comp freq
restricted
37.0kgf/cm
2
35.0kgf/cm
2
Comp freq
free
40.0kgf/cm
2
High Pressure
* The high pressure value may be lower by 0 ~ 6kgf/cm
2
. Depends on the compressor frequency.
19.5 Heating overload control (Heat)
 This control detect compressor discharge pressure and perform the compressor frequency restriction during
heating operation.
Comp stop
Comp freq
restricted
37.0kgf/cm
2
35.0kgf/cm
2
Comp freq
free
40.0kgf/cm
2
High Pressure
 This control detect outdoor ambient temperature and perform the fan speed adjustment during heating operation.
19.6 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.