Gree XK55

Wired Controller XK55
41
Error
Code
Content
Error
Code
Content
d8 Water Temperature Abnormality o9
Communication Error of IDU Master
Controller
d9
Jumper Cap Error
oA
High Temperature of IDU Module
dA
Indoor Unit Hardware Address
Error
oC IDU Charging Circuit Error
dH Wired Controller PC-Board Error ob
Temperature Sensor Error of IDU
Module
dC
Capacity DIP Switch Setting Error
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7.3 Table of Debugging Codes
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