Gree XE70-33/H

Wired Controller XE70-33/H
68
10.3 Code List for Debugging
Error
Code
Content Error Code Content
U2
Outdoor Unit Capacity
Code/Jumper Cap Setting Error
C0
Communication between indoor unit
and outdoor unit and the
communication between indoor unit
and wired controller have
malfunction
U3
Phase Sequence Protection of
Power Supply
C1
Communication error of expansion
board
U4 Protection of Lack of Refrigerant C2
Communication error between
master control and inverter
compressor drive
U5
Wrong Address of Compressor
Drive Board
C3
Communication error between
master control and inverter fan
motor drive
U6 Valve Abnormal Alarm C4 Error of Lack of Indoor Unit
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