Gree ME30-24/F1 K - Page 40

S2S KNX Gateway
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9.3 Debugging Code List
Code Content Code Content
U2
Wrong setting of
capacity code/jumper
cap of ODU
C3
Communication error
between master
controller and inverter
fan driver
U3
Phase-sequence
protection of power
source
C4
Error of absence of
IDU
U4
Refrigerant lacking
protection
C5
IDU engineering
number coniction
alarm
U5
Compressor driver
board address error
C6
Alarm for
inconsistency of ODU
quantity
U6 Valve abnormity alarm CH
High rated capacity
allocation
U8 IDU pipeline error CL
Low rated capacity
allocation
U9 ODU pipeline error CF
Multiple master
control units error
UC
Successful setting of
master IDU
CJ
System address dial
codes coniction
UE
Invalid refrigerant
charging
CP
Multiple master wired
controllers error
UL
Compressor
emergency operation
dial code error
CU
Communication error
between IDU and
receiving light board