In this video we are showing you how to solve e9 error from gree air conditionergree electricgree air conditionersgree air conditioner manualgree lo. Mostly overflow of water level in the drain trey would be the cause of e9 error in the gree inverter air conditioner you also can check the loose connection or faulty motor of the water pump in the indoor unit gree ac error codes f0 f1 f2 f3 f4 f5 f0 indoor unit embient temprature sensor. The fault code is deduced from the number of times the green led flashes blocking unit operation e1 refrigerant system high pressure protection e2 anti freezing protection e4 compressor exhaust high temperature protection e5 ac over current protection e6 communication failure between indoor unit and outdoor unit e8 anti high temperature protection h6 no feedback of indoor fan motor . Special code project debugging code de indoor unit co 2 sensor error co communication error aj filter cleaning reminding d8 water temperature sensor error d9 jumper cap error da indoor unit network address error dh wired controller circuit board error dc capacity dip switch setting error d1 indoor unit circuit board error d3