Gree GMV Multi-Split Unit E5 Code Compilation
1. Indoor Unit Display Codes and Their Meanings
Code Meaning
L0 Indoor unit fault
L1 Indoor fan protection
L2 Auxiliary heating protection
L3 Water full protection
L4 Wired controller power supply abnormality
L5 Anti-freezing protection
L7 No master indoor unit
L8 Insufficient power supply
L9 Inconsistent number of indoor units controlled by one controller
LA Inconsistent series of indoor units controlled by one controller
LH Severe air quality pollution alarm
LC Indoor and outdoor unit model mismatch
LL Water flow switch fault
LE EC direct water pump speed abnormality
LF Water distribution valve setting fault
LJ Function dial setting error
LP PG motor zero-crossing fault
dd Solar temperature sensor fault
dn Air sweeping component fault
d1 Indoor circuit board fault
d2 Water tank drainage temperature sensor fault
d3 Ambient temperature sensor fault
d4 Inlet pipe temperature sensor fault
d6 Outlet pipe temperature sensor fault
d7 Humidity sensor fault
d8 Water temperature sensor fault
d9 Jumper cap fault
dA Indoor unit network address abnormality
dH Wired controller circuit board abnormality
dC Capacity dial setting abnormality
dL Outlet air temperature sensor fault
dE Indoor CO2 sensor fault
dF Water tank inlet temperature sensor fault
dJ Return water temperature sensor fault
dP Generator inlet temperature sensor fault
dU Generator outlet pipe temperature sensor fault
db Unit debugging status
2. Debugging Codes and Their Meanings
U2 Outdoor unit capacity code/jumper cap setting error
U3 Power phase sequence protection
U4 Refrigerant shortage protection
U5 Compressor drive board address error
U6 Valve abnormal alarm
U8 Indoor unit pipeline fault
U9 Outdoor unit pipeline fault
UC Main indoor unit setting successful
UE Refrigerant charging ineffective
UL Compressor emergency operation dial error
C0 Communication fault between indoor and outdoor units, and between indoor unit and wired controller
C2 Main control and variable frequency compressor drive communication fault
C3 Main control and variable frequency fan drive communication fault
C4 Missing indoor unit fault (some indoor units without power)
C5 Indoor unit engineering number conflict alarm
C6 Inconsistent number of outdoor units alarm
CH Rated capacity over high
CL Rated capacity over low
CF Multi-master control unit fault
CJ System address conflict
CP Multi-master wired controller fault
CU Communication fault between indoor unit and receiving light board
Cb Unit IP address overflow
3. Outdoor Unit Fault Codes and Their Meanings
E0 Outdoor unit fault
E1 High pressure protection
E2 Exhaust low temperature protection
E3 Low pressure protection
E4 Compressor exhaust high temperature protection
F0 Outdoor unit main board fault
F1 High pressure sensor fault
F3 Low pressure sensor fault
F5 Compressor 1 exhaust sensor fault
F6 Compressor 2 exhaust sensor fault
F7 Compressor 3 exhaust sensor fault
F8 Compressor 4 exhaust sensor fault
F9 Compressor 5 exhaust sensor fault
FA Compressor 6 exhaust sensor fault
FH Compressor 1 current sensor abnormality
FC Compressor 2 current sensor abnormality
FL Compressor 3 current sensor abnormality
FE Compressor 4 current sensor abnormality
FF Compressor 5 current sensor abnormality
FJ Compressor 6 current sensor abnormality
FP DC motor fault
J8 System pressure ratio too high protection
J9 System pressure ratio too low protection
JA Pressure abnormal protection
JC Water flow switch protection
JL High pressure too low protection
JE Return oil pipe blockage
JF Return oil pipe leakage
b1 Outdoor ambient temperature sensor fault
b2 Defrost temperature sensor 1 fault
b3 Defrost temperature sensor 2 fault
b4 Subcooler liquid outlet temperature sensor fault
b5 Subcooler gas outlet temperature sensor fault
b6 Gas separation inlet pipe temperature sensor fault
b7 Gas separation outlet pipe temperature sensor fault
b8 Outdoor humidity sensor fault
b9 Heat exchanger gas outlet temperature sensor fault
bA Return oil temperature sensor fault
bH System clock abnormality
bC Compressor 1 shell top temperature sensor falling off fault
bL Compressor 2 shell top temperature sensor falling off fault
bE Condenser inlet pipe temperature sensor fault
FU Compressor 1 shell top temperature sensor fault
bF Condenser outlet pipe temperature sensor fault
Fb Compressor 2 shell top temperature sensor fault
bJ High and low pressure sensor reversed
J1 Compressor 1 overcurrent protection
J2 Compressor 2 overcurrent protection
J3 Compressor 3 overcurrent protection
J4 Compressor 4 overcurrent protection
J5 Compressor 5 overcurrent protection
J6 Compressor 6 overcurrent protection
J7 Four-way valve gas protection
P0 Compressor drive board fault
P1 Compressor drive board abnormal operation
P2 Compressor drive board power voltage protection
P3 Compressor drive board module reset protection
H0 Fan drive board fault
H1 Fan drive board abnormal operation
H2 Fan drive board power voltage protection
4. Status Codes and Their Meanings
A0 Unit waiting for debugging
A1 Compressor operating parameter query
A2 After-sales refrigerant recovery operation
A3 Defrosting
A4 Return oil
A5 Online debugging
A8 Vacuum mode
AH Heating
AC Cooling
AF Air supply
AJ Filter cleaning reminder
AU Remote emergency stop
Ab Emergency stop operation
Ad Restricted operation
An Anti-high temperature control
n3 Forced defrosting
n5 Forced indoor unit engineering number offset
nL Target low pressure correction
nJ Heating anti-high temperature
nP Defrost temperature adjustment value
nU Clear indoor unit remote shielding command