Gree GMV-560WM/G-X Service Manual

Gree GMV6 DC Inverter VRF Units Service Manual
139
"HH" Over Voltage
Protection for the DC Bus
of Fan Drive
The fan drive boa rd is
abnormal
Yes
Whether th e i nput voltage of the unit
exceeds 460V?
No
Replace the fan drive board
Yes
Chang e the volta ge to
380V
2.89 "HL" Under Voltage Protection for DC Bus of Fan Drive
Fault display: main board of outdoor unit displays
Fault diagnosis:
If the fault code displayed on the 2-digit digital LED of the outdoor unit's main control board is HL, it
indicates the under voltage protection for the DC bus of fan drive.
Possible causes:
■ The unit's input power cable has a voltage below 320 V;
■ The fan drive board operates improperly.
Troubleshooting:
"HL" Under Vol tage
Protection for the DC Bus
of Fan Drive
The fan drive boa rd is
abnormal
Yes
Whether th e i nput voltage of the
unit falls below 320V?
No
Replace the fan drive board
Yes
Chang e the volta ge to
380V

Gree GMV-560WM/G-X Specifications

General

Brand	Gree
Model	GMV-560WM/G-X
Category	Inverter
Language	English