Gree GMV-S280W/A-X

GMV5 Home DC Inverter Multi VRF Units
307
Low voltage protection for the DC bus of the inverter fan’s drive board (ODU fault code
HL)
Inverter fan startup failure (ODU fault code HJ)
NO
YES
N
O
Y
ES
Connect the wires well in terminals
CN503 and CN504 in fan’s drive board
The fan’s drive
board is faulty and
needs to be replaced
HL
Check if the input power
voltage of the whole system
is lower than 320V
Complete
Low input power
voltage fault, adjust
the voltage to 380V
Check if the terminals CN503
and CN504 are connected to wires