Gree GMV-S120WL/A-S Manuel Du Propriétaire page 30

Debugging
——
LED1
Progress
Code
db
07_ inspection
of parts of
indoor unit
db
db
08_ preheat
confirmation for
compressor
db
db
09_refrigerant
determination
before startup
db
db
10_outdoor
unit's valve
status
determination
db
before startup
db
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Progress instruction for all debugging stages
Progress code
code
LED2
Display Display
Code
status status
ON 07 ON
ON 07 ON
ON 08 ON
ON 08 ON
ON 09 ON
ON 09 ON
ON 10 ON
ON 10 ON
ON 10 ON
Status code
Code instruction and operation method
LED3
Display
Code
status
The
malfunction for the parts of indoor unit.
XXXX indicates the engineering series
number
malfunction. 3s later, the corresponding
error code will be displayed. Eg: when
XXXX/ there's d5 and d6 malfunction for #1 unit ,
corresponding ON and d6 and d7 malfunction for #792 indoor
error code unit, LED3 nixie tube will display 00, 01,
d5, d6, 07, 92, d6 and d7 circularly every
2s. After troubleshooting, it will enter into
the next step. If it needs to cut off the
power for outdoor unit during process of
troubleshooting, conduct debugging again
from step 01 after energization.
There's no malfunction for parts of indoor
OC ON
unit. 2s later, it will enter into the next step.
The preheat time for compressor is less
than 8 hours. Indicator displays as left side
until the preheat time for compressor
reaches 8 hours. Or short press SW7
button on main board to confirm the preset
UO ON
time reaches 8hours and then enter into
the next step. (Note: if start up the unit
when the preheat tie for compressor is
less than 8 hours, it may damage the
compressor).
The preset time for compressor reaches 8
OC ON hours. 2s later, it will enter into the next
step.
The refrigerant of system is insufficient.
The indicator displays as left side. Please
cut off the power for indoor unit and
outdoor unit and check whether the
pipeline is leaking. After solving the
U4 ON problem
refrigerant for the unit according to original
volume. After that, conduct debugging
again from step 01 after energization.
(Note: Cut off the power before charging
the refrigerant)
The refrigerant volume of system is
OC ON normal. After display as left side for 2s, it
will enter into the next step automatically.
Valve
determination status. Compressor will
operate for about 2min and then stop
ON ON
operation. Determine the ON status of big
valve and small valve of outdoor unit. The
determination result is as below:
The valve of outdoor unit is not opened
completely. Short press SW6 button on
main board and indicator will display "db
09 OC". Then check whether big valve and
U6 ON small valve of outdoor unit are opened
completely. After that, short press SW6
button on main board again. When the
compressor operates for about 2mins,
determine the status of valve again.
Status of valve is normal. If it displays as
OC ON left side for 2s, it will enter into the next
step automatically.
25
system detects that
for the indoor unit
of leakage, re-charge
of outdoor unit is
there's
with
the
under