Wired Controller XK55
42
Error
Content Error Code Content
U7
Grid DRED0 Response
C5
Alarm of Indoor Unit Project
U8 Indoor Unit Tube Malfunction C6
Alarm of Wrong Number of Outdoor
U9 Outdoor Unit Tube Malfunction C7
Mode Exchanger Communication
UA
Overvoltage Protection of DC
Bus Bar in Power Grid Side
CH Rated capacity is too high
UH
Undervoltage Protection of DC
Bus Bar in Power Grid Side
CC No master control unit error
UC
Master indoor unit is successfully
CL Rated capacity is too low
UL
Emergency Operation DIP switch
setting of the compressor is
CE
Communication Failure Between
Mode Exchanger and Indoor Unit
UE
Refrigerant Charging is
CF Error of Multiple Master Indoor Unit
UF
Indoor Unit Identification Error of
CJ System addresses is incompatible
UJ PV module F0 protection CP
Error of Multiple Master Wired
UP
Protection shutdown error of
CU
Communication Error between
Indoor Unit and Remote Receiver
UU
Electronic expansion valve leak
error of thermal storage module
Cb Outflow of Units IP Address
Ub
Protection without shutdown
error of thermal storage module
Cd
Communication Failure Between
Mode Exchanger and Outdoor Unit