Gree 30032021 Control Board 318973-401 It's designed for direct mounting

It's designed for direct mounting onto compatible valves

field verification of mounting bracket and terminal orientation is required

1-inch 3-way zone valve engineered for high-performance fluid control in hydronic heating and cooling systems

it should be inspected and replaced separately to ensure full pneumatic recovery

it integrates seamlessly into existing gas manifolds without the need for additional adapters

Gree 30032021 Control Board 318973-401 It's designed for direct mountingThe Gree 30032021 Main Control Board is a critical OEM replacement part designed for high performance HVAC system regulation. As a Gree mini split PCB, this integrated circuit coordinates the G10 inverter technology, managing variable compressor speeds and fan multi speed settings to maintain precise indoor air quality and thermal stability. This board is engineered to meet 208 230V specifications for ductless heat pump units, specifically supporting