The electric pressure transducer (or sensor) converts the values into electrical quantities that are used for reading and / or process control.
Low pressure sensor detects the suction pressure during the cooling process. The frequency control of the compressor by the control method proportional to the operating capacity of the indoor units, so that the suction pressure is controlled within an appropriate range.
If the suction pressure becomes excessively low, the small mass of refrigerant in circulation may be insufficient to cool the compressor and damage the parts it composes.
Control: if the low pressure sensor output indicates vacuum and remains in the same vacuum condition for more than 12 minutes, the compressor will be turned off to prevent damage to the system.
