
Wired Controller XK55
42
Error
Code
Content
Error Code
Content
U7
Grid DRED0 Response
Protection
C5
Alarm of Indoor Unit Project
Number Collision
U8
Indoor Unit Tube Malfunction
C6
Alarm of Wrong Number of Outdoor
Unit
U9
Outdoor Unit Tube Malfunction
C7
Mode Exchanger Communication
Error
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
set
CL
Rated capacity is too low
UL
Emergency Operation DIP switch
setting of the compressor is
wrong
CE
Communication Failure Between
Mode Exchanger and Indoor Unit
UE
Refrigerant Charging is
ineffective
CF
Error of Multiple Master Indoor Unit
UF
Indoor Unit Identification Error of
Mode Exchanger
CJ
System addresses is incompatible
UJ
PV module F0 protection
CP
Error of Multiple Master Wired
Controller
UP
Protection shutdown error of
thermal storage module
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