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DC Inverter U-match Series Floor Ceiling Type Unit
Number
Error code
20
H6
21
H7
22
HC
23
Lc
24
Ld
25
LF
26
Lp
27
U7
28
P0
29
P5
30
P6
31
P7
32
P8
33
P9
34
PA
35
Pc
36
Pd
37
PE
38
PL
39
PH
40
PU
41
PP
42
ee
43
C4
44
dJ
45
oE
46
EL
Notice: When the unit is connected with the wired controller, the error
code will be simultaneously shown on it.
Instructions to the Error Indicating Lamps on the Panel of the Floor Ceiling
Type Unit.
States of the Indicating Lamps:
(1) Indicating Lamp of "POWER": The indicating lamp will shine when power
on, while it will go out when power off.
(2) Indicating Lamp of "COOL": The indicating lamp will shine when "COOL"
is activated, while it will go out when "COOL" is deactivated.
DC fan error
Driver out-of-step protection
Pfc protection
Startup failure
Compressor phase-sequence protection
Power protection
IDU and ODU unmatched
4–way valve switch-over error
Driver reset protection
Over-current protection
Master control and driver communication error
Driver module sensor error
Driver module high temperature protection
Zero-crossing protection
AC current protection
Driver current error
Sensor connection protection
Temperature drift protection
Bus low-voltage protection
Bus high-voltage protection
Charge loop error
Input voltage error
Drive memory chip error
ODU jumper cap error
Phase-loss and anti-phase protection
ODU error, for specific error please see the status of ODU
indicator
Emergency Stop(Fire alarm)
50
Error
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