Gree GMV-36WL/A-T(U) - Page 91

DC Inverter Side Discharge VRF Ⅱ for North America
89
10_ Status
judgments of
outdoor valves
before startup
db
On
10
On
ON
On
Valves of ODU are being
inspected. Compressor will
start operation for 2min or so
and then stop. The opening
and closing status of outdoor
valves are as below:
db
On
10
On
U6
On
Outdoor valves are not fully
turned on. Press main
board’s SW6 button and
display shows “db 09 OC”.
Then check if the gas and
liquid valves of ODU are
completely open. After
confirmation, press the
SW6 button again. Then
compressor will start running
for about 2min to inspect the
status of valves.
db
On
10
On
OC
On
Valves status is normal. Unit
will display as in the left for
2s and then start next step.
12_ Confirm
debugging
startup
db
On
12
On
AP
Blink
Ready for units to start
debugging. Press main
board’s SW7 button to
confirm startup of
debugging. 2s later, main
board will display as below:
db
On
12
On
AE
On
Startup is confirmed. After
displaying for 2s, system will
choose “15_Cooling
debugging” or “16_Heating
debugging” according to
ambient temperature. If the
project requests to add
refrigerant but it is not
complemented before
debugging, then
refrigerant can be added
in this process through
the L-VALVE.
15_ Cooling
debugging
db
On
15
On
AC
On
Debugging for cooling mode.
If no malfunction occurs for
20min when compressor is
running, then system will
start progress 17. If
malfunction occurs, unit will
display as below:
db
On
15
On
Error
code
On
Malfunction occurs when
debugging for cooling mode.
After all malfunctions are
eliminated, system will start
next step. If power is off
during troubleshooting,
system will start progress 17
automatically when power is
resumed.