What is the function of the high voltage control box?

The role of the high-voltage control box is to control the connection or disconnection of the main power line of the controller, which helps to protect the safety of the circuit and controller. Its structure is the same as a traditional relay, with a coil and a normally open switch, which uses a small current to control a large current.

When the condenser is severely dusty, the fan is faulty, the cooling air volume is insufficient, the refrigerant is excessive, or there is air or other non-condensable gases in the system, Excessive exhaust pressure will be generated, which will reduce the working efficiency and refrigeration effect of the air conditioner. In severe cases, it will damage the compressor. Therefore, air conditioners are generally equipped with high-voltage controllers. The high-pressure controller is installed on the exhaust pipe and can automatically cut off the main circuit of the air conditioner through the control circuit board when the exhaust pressure is too high.

In household air conditioners, the cabinet type machine needs to be welded with a high-pressure pressure controller to limit and protect the high-pressure pressure of the system. The working pressure setting value of the high-pressure controller should be lower than the high-pressure side of the refrigeration cycle. design pressure.

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