Gree GMV5 Service Manual

GREE Photovoltaic Direct-driven Inverter Multi VRF Units
115
1.3.5.2 Restoring Factory Settings
Restoring Factory
Settings
Setting Method
Prompt for Successful
Settings
Remark
Restoring setting 1
Press and hold "SW8" on
the master unit for more
than 10 seconds.
All LEDs blink for
three seconds.
All factory settings of the ODU are restored
and the unit waits for re-commissioning.
Restoring setting 2
Press and hold "SW3"
and "SW8" on the master
unit for more than 10
seconds.
All LEDs blink for five
seconds.
Re-commissioning is not required. The
number of outdoor and IDUs is memorized.
Addresses of outdoor and IDUs are all
cleared. All the other function settings are
cleared.
Restoring setting 3
Press and hold "SW5"
and "SW8" on the master
unit for more than 10
seconds.
All LEDs blink for
seven seconds.
Re-commissioning is not required. The
number of outdoor and IDUs is memorized.
Addresses of outdoor and IDUs retain the
preceding settings. All the other function
settings are cleared.

If above function settings are incorrect, unit will run abnormal and compressor may even be
damaged.
2 COMMISSIONING PROCESS
NOTICE
！
① It is forbidden to directly connect the compressor with power supply and forcibly power it on
during commissioning and maintenance.
② Engineering commissioning operations must be performed on the
Photovoltaic Direct-driven
Inverter Multi VRF
serial unit. Otherwise, the unit cannot properly run.
③ Before commissioning is completed, the main board of ODU displays "module address 0F A0"
and that of IDU displays “A0”.
④ A module must be set to master module and only one can be set during commissioning.
⑤ An IDU must be set to master IDU and only one can be set during commissioning.
⑥ Other functions can use the factory settings if there are not special engineering requirements.
2.1 Necessity of VRF Engineering Commissioning
Different form ordinary air conditioning units, the VRF system raises high design requirements and
easily incurs operation-affected factors such as impurities and water during engineering installation. Due
to the requirements on engineering design/installation complexity and high-precise system control,
commissioning is mandatory after engineering installation. Only a qualified unit can be delivered for use.

Gree GMV5 Specifications

General

Brand	Gree
Model	GMV5
Category	Inverter
Language	English