GREE 300002000312 Main Control Board Els PW 17895 typically on the supply side

typically on the supply side immediately following the boiler or heat exchanger

This kit provides a direct fit to prevent exhaust gas recirculation and ensures the vent blower motor operates within designated amperage limits

Technicians should measure the DC micro-amps (µA) generated by the ionization current through the rod

which is invaluable during initial startup

GREE 300002000312 Main Control Board Els PW 17895 typically on the supply sideThe GREE 300002000312 Main Control Board is a critical OEM main power control module engineered specifically for technical compatibility with GREE ductless mini split systems and heat pump units. As a factory authorized GREE replacement part, this circuit board manages voltage regulation, compressor sequencing, and fan motor communication to ensure the HVAC system control logic remains within manufacturer parameters. When diagnosing communication