Gree GMVVQ1015WM/C-X, Service Manual

Page: 95 / 433

Gree GMV6 HR DC Inverter VRF Units Service Manual
93
—
Error
Code
Content
Error
Code
Content
Debug
ging
U0 Preheat time of compressor is insufficient U2
Wrong setting of ODU’s capacity
code/jumper cap
U3 Power phase sequence protection U4 Refrigerant-lacking protection
U5
Wrong address for driving board of
compressor
U6 Alarm because valve is abnormal
U8 Malfunction of pipeline for IDU U9 Malfunction of pipeline for ODU
UC Setting of main IDU is succeeded UL
Emergency operation DIP switch code of
compressor is wrong
UE Charging of refrigerant is invalid UF
Identification malfunction of IDU of mode
exchanger
Ud Drive board of grid-connection is abnormal Un
Communication malfunction between the
drive board of grid-connection and the main
board
C0
Communication malfunction between IDU,
ODU and IDU’s wired controller
C1
Communication malfunction between main
control and DC-DC controller
C2
Communication malfunction between main
control and inverter compressor driver
C3
Communication malfunction between main
control and inverter fan driver
C4 Malfunction of lack of IDU C5
Alarm because project code of IDU is
inconsistent
C6
Alarm because ODU quantity is
inconsistent
C7 Abnormal communication of converter
C8 Emergency status of compressor C9 Emergency status of fan
CA Emergency status of module CH Rated capacity is too high
CC No main unit CL
The matching ratio of rated capacity for IDU
and ODU is too low
CE
Communication malfunction between
mode exchanger and IDU
CF Malfunction of multiple main control units
CJ
Address DIP switch code of system is
shocking
CP Malfunction of multiple wired controller
CU
Communication malfunction between IDU
and the receiving lamp
Cb Overflow distribution of IP address
Cd
Communication malfunction between
mode exchanger and ODU
Cn
Malfunction of network for IDU and ODU of
mode exchanger
Cy
Communication malfunction of mode
exchanger
Status
A0 Unit waiting for debugging A2
Refrigerant recovery operation of
after-sales
A3 Defrosting A4 Oil-return
A6 Heat pump function setting A7 Quiet mode setting
A8 Vacuum pump mode AH Heating
AC Cooling AL Charge refrigerant automatically
AE Charge refrigerant manually AF Fan
AJ Cleaning reminding of filter AP
Debugging confirmation when starting up
the unit
AU Long-distance emergency stop Ab Emergency stop of operation
Ad Limit operation An Child lock status
Ay Shielding status n0 SE operation setting of system
n3 Compulsory defrosting n4
Limit setting for max. capacity/output
capacity
n5
Compulsory excursion of engineering code
of IDU
n6 Inquiry of malfunction
n7 Inquiry of parameters n8 Inquiry of project code of IDU
n9 Check quantity of IDU on line nA Heat pump unit
nH Heating only unit nC Cooling only unit
nE Negative code nF Fan model
nJ High temperature prevention when heating nU
Eliminate the long-distance shielding
command of IDU
nb Bar code inquiry nn
Length modification of connection pipe of
ODU