DC Inverter U-match Series Duct Type Unit
56
Number Error code
Error
17
H3
Compressor overload protection
18
H4
Overload
19
H5
IPM protection
20
H6
DC fan error
21
H7
Driver out-of-step protection
22
HC
Pfc protection
23
Lc
Startup failure
24
Ld
Compressor phase-sequence protection
25
LF
Power protection
26
Lp
IDU and ODU unmatched
27
U7
4–way valve switch-over error
28
P0
Driver reset protection
29
P5
Over-current protection
30
P6
Master control and driver communication error
31
P7
Driver module sensor error
32
P8
Driver module high temperature protection
33
P9
Zero-crossing protection
34
PA
AC current protection
35
Pc
Driver current error
36
Pd
Sensor connection protection
37
PE
Temperature drift protection
38
PL
Bus low-voltage protection
39
PH
Bus high-voltage protection
40
PU
Charge loop error
41
PP
Input voltage error
42
ee
Drive memory chip error
43
C4
ODU jumper cap error
44
dJ
Phase-loss and anti-phase protection
45
oE
ODU error, for specific error please see the status of ODU
indicator
46
EL
Emergency Stop(Fire alarm)
Notice:
When the unit is connected with the wired controller, the error
code will be simultaneously shown on it.
