22
7.
Maintenance
7-1 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 internal unit of the mainstream model
supplied by the Company.
Example:
“internal coil sensor error” is coded as E3 in the error code of the internal
unit, but appears as flash-out via the trouble light of the external 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
Overcurrent Protection of Indoor Unit
E0
2
Internal temperature sensor error
E1
3
External coil sensor error
E2
4
Internal coil sensor error
E3
5
Internal fan error of
wall mounted air
conditioner
（
PG motor
）
E4
6
Internal fan error of
wall mounted air
conditioner
（
DC motor
）
E4
7
Internal and external communication error
E5
（
5E
）
8
Indoor EE Failure
Eb
9
External DC fan error (3-core terminal motor)
F0
10
Module protection error
F1
11
PFC protection error
F2
12
Compressor startup error
F3
13
Exhaust sensor error
F4
14
Pressing top head sensor error
F5
15
External temperature sensor error
F6
16
OVP or UVP error
F7
17
Main external control panel and module panel
communication error
F8
18
Outdoor EE error
F9
19
Recirculated sensor error
（
four-way valve switch
error
）
FA
20
High-voltage Switch Protection
P2
21
Liquid Deficiency Protection
P3
22
Refrigeration Overload Protection
P4
23
Exhaust Protection
P5
