Heat pump water heater based on Samsung S3F9488 MCU

Aiming at operating heat pump water heater intellectually and effectively,a controller based on Samsung S3F9488 microcontrollers was introduced about hardware circuit design and software design flow chart.The hardware,including multi-channel temperature and pressure data acquisitions,input/output switch control,phase sequence testing and phase loss detection,serial communication and so on,was developed in the host control board.Human machine interface,such as system parameters display,key listener and fault alarm,was realized in the subordinate display board.The exchange of parameters between host control board and subordinate display control board was done by 20 mA current loop communication.System control software was completed by IAR for Samsung SAM8 software development platform.The test results indicate that this heat pump water heater controller is safety and reliability,used in domestic and small commercial heat pump water heater.