Gree GMV-400WM/E-X Service Manual

GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
145
Feedback
from user
Exception
Possible reasons
Solution
Primary reason
Secondary reason
Tertiary reason
Description
Confirmation
method
Description
Confirmation
method
Description
Confirmation
method
performanc
e of the unit.
4.2 The air
intake and
return inlet
of the IDU
are too
close to
each other,
causing
poor heat
exchange of
the unit.
Check the
distance.
——
——
Re-design the
airflow
distribution.
7. Not
enough
refrigerant
Other
reasons
Incorrect
quantity of
refrigerant
is injected.
——
——
——
Check the
necessary
amount of
refrigerant and
inject
refrigerant
slowly via the
stop valve of
the
low-pressure
air pipe.
2.2.4 Exception Analyzing and Troubleshooting
2.2.4.1 “A0” Unit debug status
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
This code is status code. When the engineering debugging is not completed, the unit will display this
code, at this time, the unit cannot startup for operation.
Possible reason：——
Troubleshooting:
status code, no troubleshooting.
2.2.4.2 “A2” Refrigerant recovery operation status
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
This code is status code, which means the system has entered into refrigerant recovery status, and
the unit will start up for operation automatically.
Possible reason：——
Troubleshooting:
status code, no troubleshooting.

Gree GMV-400WM/E-X Specifications

General

Brand	Gree
Model	GMV-400WM/E-X
Category	Air Conditioner
Language	English