OEM BOARD; OUTDOOR MAIN CONTROL BOARD ASSEMBLY PCB Board Assembly, Service First Component Commonly used in: M4HP4018B1000AB M4HP4024B1000AB M4HP4030A1000AB M4HP4036A1000AB M4HP4042A1000AB M4HP4048A1000AB M4HP4060A1000AB Electronic Control Boards are Non-Returnable BOARD; PCB, MAIN CONTROL ASSEMBLY , PCB Board Assembly