CONTROL BOARD, AIR CONDITIONING SYSTEM, CONTROL METHOD AND CONTROL PROGRAM

Abstract

A control board, an air conditioner, a control procedure and a control program are provided that can simplify wiring while controlling multiple electronic expansion valves.A control board 1 includes a CPU (50) that controls several electronic expansion valves (10) via a motor driver (20), the motor driver (20) which is provided in one-to-one correspondence with the CPU (50), an operating setting switch (60) which switches the motor driver (20) to a setting of the electronic expansion valve (10) as a control target in order to perform an operating setting on the electronic expansion valve (10) in response to an operating setting switching signal output by the CPU (50), and a selector switch (70) which switches a current path such that a current flows from the motor driver (20) to the electronic expansion valve (10) as the control target with a current value based on a phase-shifting clock signal output by the CPU (50).