Gree GMV5 Service Manual

GREE Photovoltaic Direct-driven Inverter Multi VRF Units
147
NOTE:
①
If the enquired IDU is normal, no fault code will be displayed in the temperature area; if the unit
indoor has multiple faults, fault codes will be displayed in the temperature area at an interval of 3
seconds.
②
Press the “ON/OFF” button on the interface of IDU project number and fault enquiry to exist the
parameter enquiry interface.
2.2 Form Analyzing
2.2.1 Control
Fault code
Fault
Possible reasons
Solution
F0
Faults in the ODU's
main board (such
as memory and
address chip
exceptions)
1. The clock chip on the main
board is damaged.
2. The memory chip on the main
board is damaged.
3. The address chip on the main
board is damaged.
1. Replace the small CPU board.
2. Replace the control board.
3. Replace the control board.
FC
Faults in the
constant frequency
compressor's
current sensor
1. The constant-frequency
compressor is not started.
2. The current detection board is
faulty.
3. The main board's detection
circuit is faulty.
1. If the compressor is not started, check if the AC
contact is closed. If not, replace the AC contact.
If the connection is loose, reconnect it;
2. Replace the current detection board.
3. Replace the main board.
U2
Wrong outdoor
capacity code
setting
1. The capacity code is wrong.
2. The dial component is faulty.
1. Modify the capacity code setting.
2. Replace the main board.
U3
Power phase
sequence
protection
1. The three-phase power cable is
not connected correctly.
2. The main board's detection
circuit is faulty.
1. Check connection of the power cable.
2. Replace the control board.
UL
Wrong emergency
operation dial code
1. The dial setting is wrong.
2. The dial component is faulty.
1. Modify the dial setting.
2. Replace the main board.
C0
Communication
failure between
indoor and ODUs
and IDU's
communicator
1. The communication cable is not
connected.
2. The communicator is
disconnected.
3. The communication cable is
poorly connected.
4. The communicator controller is
faulty.
If C0 is not displayed on the control board of the
ODU, check the network between the IDU and
communicator. If C0 is displayed, check the
network between the IDUs and ODUs and
between the IDU and communicator as follows:
1) Check if the cables connecting the control
board of the ODU and the IDU and connecting the
IDU and communicator are loose. If yes, reconnect
them;
2) Check if the cables connecting the control
board and IDU and connecting the IDU and
communicator are broken. If yes, replace the
cables;
3) Check the contact of the communication cables;
4) Replace the control board. If the fault is solved,
the control board is faulty. Replace the IDU. If the
fault is solved, the IDU is faulty.

Gree GMV5 Specifications

General

Brand	Gree
Model	GMV5
Category	Inverter
Language	English