Gree GMV-100WL/A-T, Service Manual

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GREE DC Inverter Multi VRF System II Service Manual
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2.2 Status display table for indicators on main board of outdoor unit
Definition:
z
LED1: It displays “00” for hot water mode as for DC Inverter Side Discharge VRF
z
LED2: It displays “AC” for AC mode, cooling and cooling OFF mode for indoor unit, and displays
“AH” for heating and heating OF F mode for indoor unit
z
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 correspon ding 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
FP Malfunction of DC motor 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
Maflunction of defrosting
temperature sensor 1
b3
Maflunction 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
bH Abnormal clock of system P0
Malfunction driven board
for compressor
P1
Driven board of
compressor works
abnormally
P2
Power voltage protection for
the driven board of
compressor
P3
Reset protection for the
driven module of
compressor
P4
Driven PFC protection of
compressor
P5
Overcurent protection for
inverter compressor
P6
Driven IPM module
protection for compressor
P7
Malfunction of driven
temperature sensor for
compressor
P8
Overheating protection for
driven IPM of compressor
P9
Desynchronizing
protection for inverter
compressor
PH
High voltage protection
for driven DC bus bar of
compressor
PC
Circuit malfunction of driven
current detection for
compressor
PL
Low voltage protection for
driven DC bus bar of
compressor
PE
Phase-losing of inverter
compressor
PF
Malfunction of driven
charging loop for
compressor
PJ
Failure start up for inverter
compressor
PP
AC current protection for
inverter compressor
U0
Preheat time is not enough
for compressor
U2
Capacity code of outdoor
unit/wrong setting of
jumper cap
U4
Insufficient refrigerant
protection
U5
Wrong address for the
driven board of compressor
U6
Alarm due to abnormal
valve
U8
Malfunction of pipeline for
indoor unit
U9
Malfunction of pipeline for
outdoor unit
UC
Setting for indoor unit and
oudoor unit is succeeded
UL
Wrong code-dialing
during emergency
UE
Refrigerant-charging is
invalid
C0
Communication
malfunction for indoor unit,