Gree GMV5 - Page 198

GREE Photovoltaic Direct-driven Inverter Multi VRF Units
194
2.3.4.56 “E3” System low pressure protection
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
Test compressor suction pressure through low pressure sensor. When pressure value is lower than
-41
℃
, the unit will stop for protection.
Possible reason:
■Cut-off valve of ODU is not fully opened;