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9. Maintenance
9.1 Error Code List
Name of malfunction
Anti-freezing protection
Block or Low pressure of refrigerant system
Compressor exhaust high temperature protection
AC over-current protection
Communication failure between indoor unit and outdoor unit
Anti-high temperature protection
No feedback of indoor fan motor
Jumper cap malfunction protection
Indoor unit and outdoor unit doesn't match
Outdoor DC fan motor malfunction
Power protection
Gathering refrigerant
Indoor ambient sensor open or short circuit
Indoor tube sensor open or short circuit
Outdoor ambient sensor open or short circuit
Outdoor tube sensor open or short circuit
Exhaust sensor open or short circuit
Overload limit / drop frequency
Over current limit / drop frequency
High exhaust temperature limit / drop frequency
Refrigerant leakage protection
Anti-freezing limit / drop frequency
Defrosting
Compressor overload protection
IPM protection
Module temperature is too high
PFC protection
Loading EEPROM malfunction
High PN voltage protection
Low PN voltage protection
4-way valve reversal abnormal
DRED1 / DRED2 / DRED3
Compressor Min frequence in test state
Compressor rated frequence in test state
Compressor maximum frequence in test state
Compressor intermediate frequence in test state
Compressor is running(normal)
The temperature for turning on the unit is reached(normal)
Frequency limiting (module temperature )
Frequency limiting (power)
Malfunction of detecting plate(WIFI)
Notes: R(Indoor)--Running C--Cooling H--Heating Y--Yellow R(Outdoor)--Red
O/U--OFF or Unblink
48
The display difference between Fo and F0 is 'o' is the bottom part of figure 8
Display of lamp
(the times of blinking)
Display of
Indoor
indoor unit
R
C
E2
2
E3
3
E4
4
E5
5
6
E6
E8
8
H4
H6
11
C5
15
19
LP
23
L3
20
L9
Fo
1
1
F1
1
F2
2
3
F3
F4
4
F5
5
F6
6
F8
8
F9
9
F0
10
FH
2
H1
H3
H5
H5
HC
EE
PH
11
PL
20
U7
d1/d2/d3
P0
P1
P2
P3
EU
6
LU
24
JF
G--Green
Service Manual
Outdoor
H
R
G
Y
3
9
7
5
O/U
6
4
6
16
14
9
6
5
7
3
1
2
9
2
4
2
1
3
8
5
4
5
10
6
14
15
11
13
21
12
1
8
11
6
13
Installation and Maintenance
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Table of Contents
Troubleshooting
