Gree MULTI VRF SYSTEM II GMV-120WL/A-T User Manual

57
DC Inverter Multi VRF System II
Service Manual
L1
Indoor fan
protection
LA Wrong series for one-
to-more indoor unit
d9 Malfunction of jumper cap
L2
E-heater
protection
LH
Alarming due to bad air
quality
dA Abnormal address for indoor unit
L3
Water overow
protection
LC
The indoor unit model
can’t match with
outdoor unit model
dH Abnormal PCB for wired controller
L4
Overcurrent
protection
d1 Poor indoor PCB dC Abnormal code-dialing setting of capacity
L5
Freeze prevention
protection
d3
Malfunction of ambient
temperature sensor
dL
Malfunction of air exhause temperature
sensor
L6 Mode shock d4
Malfunction of entry
tube temperature
sensor
dE Malfunction of indoor C02 sensor
L7
No main indoor
unit
d6
Malfunction of exit tube
temperature sensor
C0 Communication malfunction
L8
Insufcient power
supply
d7
Malfunction of humidity
sensor
AJ Clean alarming for lter
db Special code: engineering debugging code
2.2 Status display table for indicators on main board of outdoor unit
Denition:
① .
LED1: It displays “00” for hot water mode as for DC Inverter Side Discharge VRF
② .
LED2: It displays “AC” for AC mode, cooling and cooling OFF mode for indoor unit, and displays “AH” for heating and heating OFF
mode for indoor unit
③ .
LED3: It displays on or off status of compressor and malfunction code. It displays “ON” when the compressor is operating and “OFF”
when the compressor stops operation. When there’s malfunction for the unit, it will display corresponding malfunction code; when
there’re multiple malfunctions, the malfunction codes will be displayed in turn.
Display code table of outdoor unit is as below:
Display
code
Content
Display
code
Content
Display
code
Content
E0
Malfunction of
outdoor unit
E1 High pressure protection E2 Low-temperature protection for dicharge
E3
Low pressure
protection
E4
Discharge high temperature
protection for compressor
EC
Loose protection for discharge temperature
sensor for compressor 1
F0
Poor main board of
outdoor unit
F1
Malfunction of high
pressure sensor
F3 Malfunction of low pressure sensor
F5
Malfunction
of discharge
temperature sensor
for compressor 1
J0 Other module protection J1 Overcurrent protection for compressor 1
J7
Air-mixing
protection for 4-way
valve
J8
High pressure ration
protection of system
J9 Low pressure ratio protection of system
JL
High pressure is too
low
b1
Malfunction for outdoor
ambient temperature
sensor
b2
Maunction of defrosting temperature
sensor 1
b3
Maunction
of defrosting
temperature sensor
2
b4
Malfunction of liquid
temperature sensor for
subcooler
b5
Malfunction of gas temperature sensor for
subcooler
b6
Malfunction for
temperature sensor
of inlet tube of gas
and liquid separator
b7
Malfunction for temperature
sensor of exit tube of gas
and liquid separator (exit
tube A)
b9
Malfunction of gas exit temperature sensor
for heat exchanger

Gree MULTI VRF SYSTEM II GMV-120WL/A-T Specifications

General

Brand	Gree
Model	MULTI VRF SYSTEM II GMV-120WL/A-T
Category	Inverter
Language	English