Gree GMV-400WM/B-X - Page 111

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
108
refrigerant perfusion
commissioning operation
status.
13_
——
——
——
——
——
——
No meaning.
14_
——
——
——
——
——
——
No meaning.
15_Cooling
operation by
manual
perfusion
db
On
15
On
AC
On
The system is in
cooling-mode
commissioning operation
(the system
automatically selects the
commissioning operation
mode without needing
manual settings).
db
On
15
On
Corresponding
fault code
On
A fault occurs on the
cooling-mode
commissioning
operation.
db
On
15
On
J0
On
A fault occurs on other
modules during the
cooling-mode
commissioning
operation.
db
On
15
On
U9
On
A fault occurs on ODU
pipes or valves.
db
On
15
On
XXXX/U8
On
The system detects pipe
failure of IDU. "XXXX"
indicates the project
number of the faulty IDU.
The fault code "U8" is
displayed after three
seconds. For example, if
a U8 fault occurs on IDU
100, LED3 will circularly
display "01", "00" (two
seconds later), and "U8"
(two seconds later).
16_Heating
operation by
manual
perfusion
db
On
16
On
AH
On
The system is in
heating-mode
commissioning operation
(the system
automatically selects the
commissioning operation
mode without needing
manual settings).
db
On
16
On
Corresponding
fault code
On
A fault occurs on the
heating-mode
commissioning
operation.
db
On
16
On
J0
On
A fault occurs on other
modules during the
heating-mode
commissioning
operation.
db
On
16
On
U9
On
A fault occurs on ODU
pipes or valves.
db
On
16
On
XXXX/U8
On
The system detects pipe
failure of IDU. "XXXX"
indicates the project
number of the faulty IDU.
The fault code "U8" is
displayed after three
seconds. For example, if
a U8 fault occurs on IDU
100, LED3 will circularly
display "01", "00" (two