Lennox VRF VEWCL1E Instruction Manual page 75

Code
Undervoltage protection of DC bus
UH
bar in power grid side
Indoor Unit Identification Error of
UF
Mode Exchanger
Emergency Operation DIP switch
UL
setting of the compressor is wrong.
UJ PV module F0 protection
Protection shutdown error of thermal
UP
storage module
Electronic expansion valve leak error
UU
of thermal storage module
Protection without shutdown error of
Ub
thermal storage module
Ud Grid-connection driver board error
Communication error between
Un grid-connection driver board and
master controller
Uy PV module overheating protection
Content
Wired Controller VEWCL1E
Code
Alarm of Wrong Number of Outdoor
C6
Mode Exchanger Communication
C7
CH Rated capacity is too high.
CL Rated capacity is too low.
CJ System addresses is incompatible.
CP Multiple master wired controller error
Communication Error between Indoor
CU
Unit and Remote Receiver
Communication error between mode
Cd
Indoor and Outdoor Network Error of
Cn
Communication Error of No Master in
Cy
71
Content
Unit
Error
switcher and ODU
Mode Exchanger
Mode Exchanger