Error Contents
Indoor Error Display
Operation
Timer
Air Clean
Coil Dry
Wired Remote Code No.
Communication Error
Serial reverse transfer error at Start Up
Off
2 flashes
Off
Off
01
Serial reverse transfer error during operation
Off
3 flashes
Off
Off
00
Forward transfer signal error at start up
Off
4 flashes
Off
Off
13
Indoor Unit ←Remote Control ←Wired Remote Control
Off
8 flashes
Off
Off
00
Indoor Unit Temperature Error
Room temperature thermistor error
2 flashes
2 flashes
Off
Off
02 or 03
Heat exchanger temperature thermistor error
2 flashes
3 flashes
Off
Off
04 or 05
Indoor Unit Water Drain Abnormal
Float switch tripped / pump problem
2 flashes
6 flashes
Off
Off
09
Outdoor Unit Temperature Error
Discharge pipe temperature thermistor error
3 flashes
2 flashes
Off
Off
0C or 0d
Outdoor heat exchanger temp. thermistor error
3 flashes
3 flashes
Off
Off
06 or 07
Outdoor temperature thermistor error
3 flashes
4 flashes
Off
Off
0A or 0b
2-way valve temperature thermistor error
3 flashes
Off
2 flashes
Off
1d
3-way valve temperature thermistor error
3 flashes
Off
3 flashes
Off
1E
Heat sink temperature thermistor error
3 flashes
7 flashes
Off
Off
0E
Compressor temperature thermistor error
3 flashes
8 flashes
Off
Off
15
Indoor Unit Control System Error
Manual Auto button error
4 flashes
2 flashes
Off
Off
20
Power supply 50 HZ / 60 HZ detection error
4 flashes
4 flashes
Off
Off
08
Electronic air clean filter error
4 flashes
7 flashes
Off
Off
21
Electronic air cleaner power PCB circuit error
4 flashes
8 flashes
Off
Off
22
Outdoor Unit Control System Error
IPM error
5 flashes
2 flashes
Off
Off
17
CT error
5 flashes
3 flashes
Off
Off
18
Compressor position error
5 flashes
5 flashes
Off
Off
1A
Outdoor fan motor error
5 flashes
6 flashes
Off
Off
1b
Connected indoor unit error
5 flashes
7 flashes
Off
Off
1F
Main CPU-sub CPU communication error
5 flashes
8 flashes
Off
Off
1C
Indoor Unit Fan Motor Error
Indoor fan motor lock error
6 flashes
2 flashes
Off
Off
12
Indoor fan motor speed error
6 flashes
3 flashes
Off
Off
12
Refrigerant System Error
Discharge pipe thermistor error
7 flashes
2 flashes
Off
Off
0F
Cooling high pressure abnormal rise
7 flashes
3 flashes
Off
Off
14
High pressure switch error
7 flashes
6 flashes
Off
Off
16
Added Function Error
Active filter module (AFM) error (Second time)
8 flashes
2 flashes
Off
Off
19
Active filter module (AFM) error (First time)
8 flashes
3 flashes
-
-
-
PFC circuit error
8 flashes
4 flashes
-
-
-
Indoor Unit Connect Error
Indoor unit error (indoor EEPROM abnormal)
Blinking
Blinking
Blinking
Blinking
11
Multi-Zones: ASU9RMLQ, ASU12RMLQ, ASU18RMLQ, ARU9RML*, ARU12RML*, ARU18RML*, AUU9RML, AUU12RML, AUU18RML
*Refer to the wired remote controller
