Functional block diagram of Hisense KFR-25GW-06BP inverter air conditioner outdoor unit microprocessor

Shown is the Hisense KFR-2 5G W/06BP ​​inverter air conditioner microprocessor control circuit. Its main body is the MB90F462-SH
chip. From the picture, you can see its connection relationship with the external circuit and its main functions.
    1. The work of the instruction input circuit
    outdoor unit microprocessor is controlled by the indoor unit microprocessor. When the indoor unit microprocessor receives the control command sent by the user from the remote control transmitter
, the indoor microprocessor sends the control information to the outdoor unit microprocessor through the interface. The outdoor microprocessor
controls the compressor motor, fan motor, four-way valve solenoid coil and other components according to the control instructions and internal programs of the indoor unit .
    2. The transmitter interface
    outdoor unit microprocessor mainly controls and detects various parts in the outdoor unit. The sensor interface is the main circuit of the outdoor unit microprocessor
. The compressor temperature, input voltage value, outdoor temperature, coil temperature, exhaust pipe temperature, and current consumption value are all
parameters that the microprocessor needs to monitor at all times. Once the sensor displays abnormal information, the microprocessor will automatically shut down immediately.