TCL Air Conditioner Service Manual
Error list
Failure Type
Indoor LED
Code
CASSETTE Outdoor light
blink time (n)
LED1 LED2 LED3 LED4
Indoor and outdoor communication failure E0
●●●
◎
7
Outdoor communication failure
EC
◎◎
●●
15
Indoor room temperature sensor (IRT)
E1
●●
◎
●
25
Indoor coil temperature sensor (IPT)
E2
●●
◎◎
26
Outdoor coil temperature sensor (OPT)
E3
●
◎
●●
10
IPM over current protect
E4
● ◎ ● ◎
40
Compressor phase-deficientoperation
34
Model configuration wrong
E5
●
◎◎
●
29
Indoor fan motor fault
E6
●
◎◎◎
21
Outdoor temperature sensor
E7
◎
●●●
9
Exhaust temp. sensor
E8
◎
●●
◎
11
IPM drive and module fault
E9
◎
●
◎
●
30
Outdoor fan motor fault (DC motor)
EF
◎
◎
◎◎
16
Current sensor fault
EA
◎
●
◎◎
13
Indoor EEPROM fault
EE
◎◎
●
◎
27
Outdoor EEPROM fault
EE
◎◎◎
●
19
Temp. switch fault ( on top of the
compressor)
EP
- - - -
8
Voltage sensor fault
EU
○ ●●
◎
12
Outlet temperature sensor A fault
Ey
○
● ◎ ●
47
Outlet temperature sensor B fault
48
Inlet temperature sensor A fault
En
○
● ◎ ◎
51
Inlet temperature sensor B fault
52
Protection display code list:
○--light ●--off ◎—flash
Protection Type
Indoor LED
Code
CASSETTE
Outdoor light
blink time (n)
LED1 LED2 LED3 LED4
Overvoltage /lower voltage protection
P1
○●● ○ 2
Overcurrent protection
P2
○●○● 3
Overvoltage protection
P3
○●○○ 24
Discharge over temperature
P4
○○●● 4
Too cool protection in cooling mode
P5
- - - -
32
Overheat protection in cooling mode
P6
○○○● 5
Overheat protection in heating mode
P7
○○○○ 33
Outdoor over temperature
/ lower temperature protection
P8
- - - -
31
Drive protection (software control )
P9
- - - -
6
Module protection (hardware control)
P0
- - - -
1
Model different
P
●●○○
Water full protect
D3
●○○
◎