24
9.
Maintenance
9-1 Troubleshooting Guide
Many error codes many appears on this air conditionor, and this troubleshooting
guide is prepared for the maintenance personnel to detect the error position and the
parts to be replaced during the troubleshooting process. In this Guide, the
Troubleshooting Method is guided by the Error Name, and the Reference Code under
the General Index is the error code of the Indoor Unit of the mainstream model
supplied by the Company.
Example: “Indoor Unit coil sensor error” is coded as E3 in the error code of the
Indoor Unit, but appears as flash-out via the trouble light of the Outdoor Unit machine.
However, their troubleshooting method is the same, and use the same table as well.
General index: fix speed air conditioners only involve E1, E2, E3 and E4
No. Error Name Reference Code
1 Ove
rcurrent Protection of Indoor Unit E0
2
Indoo
r Unit temperature sensor error E1
3
Out
door Unit coil sensor error E2
4
Indoo
r Unit coil sensor error E3
5
Indoor Unit motor error of wall mounted air
conditioner（PG motor）
E4
6
Indoo
r Unit motor error of wall mounted air
conditioner（DC motor）
E4
7
Indoo
r Unit and Outdoor Unit communication
E
5（5E
）
8
Indoo
r EE Failure Eb
9
Out
door Unit DC motor error (3-core terminal
F
0
1
0 Modul
e protection error F1
1
1 PF
C protection error F2
1
2 Com
pressor startup error F3
1
3 Exha
ust sensor error F4
1
4 Pr
essing top head sensor error F5
1
5 Out
door Unit temperature sensor error F6
1
6 OV
P or UVP error F7
1
7
Out
door Unit main PCB and module panel
F
8
1
8
1
9
Recirculated sensor error（four-way valve switch
error）
FA
2
0
2
1
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