Gree GMV-615WM/B-X Service Manual

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
136
main control board
and variable
frequency fan drive
off;
3. The communication cable
between the control board and fan
drive board is not connected;
4. The fan drive board's dial switch
is wrong.
works properly;
2. Check the power supply of the drive
board. Replace the drive board if it
works properly;
3. Connect the main board and drive
board using the communication cable;
4. Adjust the dial switch of the fan drive
board.
H3
Fan drive module
reset protection
1. The fan drive board is faulty.
1. Replace the fan drive board.
H5
Variable frequency
fan over-current
protection
1. The fan drive board's IPM
module is damaged;
2. The fan's UVW cable is not
connected properly;
3. The fan is damaged.
1. Replace the fan drive board;
2. Reconnect the fan's UVW cable;
3. Replace the fan.
H6
Fan drive IPM
module protection
1. The fan drive board's IPM
module is damaged;
2. The fan's UVW cable is not
connected properly;
3. The fan is damaged.
1. Replace the fan drive board;
2. Reconnect the fan's UVW cable;
3. Replace the fan.
H7
Fan drive
temperature sensor
fault
1. The fan drive board is faulty.
1. Replace the fan drive board.
H8
Fan drive IPM
over-temperature
protection
1. The fan drive board is faulty;
2. Thermal gel is not applied evenly
on the IPM module;
3. The IPM module is not screwed
properly.
1. Replace the fan drive board;
2. Apply thermal gel evenly on the IPM
module;
3. Screw the IPM module properly.
H9
Variable frequency
fan out-of-step
protection
1. The fan drive board is faulty.
2. The fan is damaged.
1. Replace the fan drive board.
2. Replace the fan.
HH
Fan drive DC bus
high voltage
protection
1. Does the voltage of the input
power cable of the whole system
exceed 460 V;
2. The fan drive board is faulty.
1. Lower the voltage of the input power
cable to the required range;
2. Replace the fan drive board.
HL
Fan drive DC bus
low voltage
protection
1. Is the voltage of the input power
cable of the whole system lower
than 320 V;
2. Is the fan drive board well
connected with the compressor
drive board;
3. The fan drive board is faulty.
1. Elevate the voltage of the input power
cable to the required range;
2. Connect the fan drive board with the
compressor drive board according to the
wiring diagram;
3. Replace the fan drive board.
HC
Fan drive current
detection circuit fault
1. The fan drive board is faulty.
1. Replace the fan drive board.
HJ
Variable frequency
fan starting failure
1. The drive board is damaged;
2. The fan's UVW cable is not
connected properly;
3. The fan is damaged.
1. Replace the fan drive board;
2. Reconnect the fan's UVW cable;
3. Replace the fan.
2. System faults
2.1 System exhaust temperature exception

Gree GMV-615WM/B-X Specifications

General

Brand	Gree
Model	GMV-615WM/B-X
Category	Air Conditioner
Language	English