Gree Ultra Heat GMV Multi VRF Series Owner's Manual page 65

Debugging:
Error Code
Preheat time of compressor is insufficient
U0
Wrong setting of ODU's capacity
U2
Power supply phase sequence protection
U3
Refrigerant-lacking protection
U4
Wrong address for driving board of
U5
Alarm because valve is abnormal
U6
Malfunction of pipeline for IDU
U8
Malfunction of pipeline for ODU
U9
Setting of main IDU is succeeded
UC
Emergency operation DIP switch code of
UL
Charging of refrigerant is invalid
UE
Identification malfunction of IDU of mode
UF
Communication malfunction between IDU,
C0
ODU and IDU's wired controller
Communication malfunction between main
C1
control and DC-DCcontroller
Communication malfunction between main
C2
control and inverter compressor driver
Communication malfunction between main
C3
control and inverter fan driver
Malfunction of lack of IDU
C4
Alarm because project code of IDU is
C5
Content
code/jumper cap
compressor
compressor is wrong
exchanger
inconsistent
Ultra Heat GMV Multi VRF_Heat Recovery Serial
Error Code
Alarm because ODU quantity is inconsistent
C6
Abnormal communication of converter
C7
Emergency status of compressor
C8
C9
Emergency status of module
CA
CH
CC
The matching ratio of rated capacity for IDU
CL
Communication malfunction between mode
CE
Malfunction of multiple main control units
CF
Address DIP switch code of system is
CJ
Malfunction of multiple wired controller
CP
Communication malfunction between IDU
CU
Overflow distribution of IP address
Cb
Communication malfunction between mode
Cd
Malfunction of network for IDU and ODU of
Cn
Communication malfunction of mode
Cy
60
Content
Emergency status of fan
Rated capacity is too high
No main outdoor unit
and ODU is too low
exchanger and IDU
shocking
and the receiving lamp
exchanger and ODU
mode exchanger
exchanger