Gree GMV-24WL/C-T, Service Manual, Page: 100 / 150

GREE DC Inverter Side Discharge VRF
Ⅱ
for North America
97
Content
symbol
Division
symbol
0 1 2 3 4 5
Outdoor
E
Malfunction of
ODU (uniform)
High-pressure
protection
Discharge
low-temperature
protection
Low-pressure
protection
High
discharge
temperature
protection of
compressor
-
F
Main board of
ODU is poor
Malfunction of
high-pressure
sensor
-
Malfunction
of
low-pressure
sensor
-
Malfunction
of discharge
temperature
sensor of
compressor
1
J -
Over-current
protection of
compressor 1
- - - -
b -
Malfunction of
outdoor
ambient
temperature
sensor
Malfunction of
defrosting
temperature
sensor 1
-
Malfunction
of liquid
temperature
sensor of
sub-cooler
Malfunction
of gas
temperature
sensor of
sub-cooler
P
malfunction of
driving board of
compressor
(uniform)
Driving board
of compressor
operates
abnormally
(uniform)
Voltage
protection of
driving board
power of
compressor
(uniform)
Reset
protection of
driving
module of
compressor
Drive PFC
protection of
compressor
Over-current
protection of
inverter
compressor
Debugging
U
Preheat time of
compressor is
insufficient
-
Wrong setting of
ODU’s capacity
code/jumper
cap
- -
Wrong
address for
driving
board of
compressor
C
Communication
malfunction
between IDU,
ODU and IDU’s
wired controller
-
Communication
malfunction
between main
control and
inverter
compressor
driver
-
Malfunction
of lack of
IDU
Alarm
because
project code
of IDU is
inconsistent
Status
A
Unit waiting for
debugging
Inquiry of
compressor
operation
parameters
- Defrosting Oil-return Online test
n
SE operation
setting of
system
Setting of
defrosting
cycle K1
Setting of upper
limit of
IDU/ODU
capacity
distribution ratio
- -
-