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 ashes Off Off 01
Serial reverse transfer error during operation Off 3 ashes Off Off 00
Forward transfer signal error at start up Off 4 ashes Off Off 13
Indoor Unit ←Remote Control ←Wired Remote Control Off 8 ashes Off Off 00
Indoor Unit Temperature Error
Room temperature thermistor error 2 ashes 2 ashes Off Off 02 or 03
Heat exchanger temperature thermistor error 2 ashes 3 ashes Off Off 04 or 05
Indoor Unit Water Drain Abnormal Float switch tripped / pump problem 2 ashes 6 ashes Off Off 09
Outdoor Unit Temperature Error
Discharge pipe temperature thermistor error 3 ashes 2 ashes Off Off 0C or 0d
Outdoor heat exchanger temp. thermistor error 3 ashes 3 ashes Off Off 06 or 07
Outdoor temperature thermistor error 3 ashes 4 ashes Off Off 0A or 0b
2-way valve temperature thermistor error 3 ashes Off 2 ashes Off 1d
3-way valve temperature thermistor error 3 ashes Off 3 ashes Off 1E
Heat sink temperature thermistor error 3 ashes 7 ashes Off Off 0E
Compressor temperature thermistor error 3 ashes 8 ashes Off Off 15
Indoor Unit Control System Error
Manual Auto button error 4 ashes 2 ashes Off Off 20
Power supply 50 HZ / 60 HZ detection error 4 ashes 4 ashes Off Off 08
Electronic air clean lter error 4 ashes 7 ashes Off Off 21
Electronic air cleaner power PCB circuit error 4 ashes 8 ashes Off Off 22
Outdoor Unit Control System Error
IPM error 5 ashes 2 ashes Off Off 17
CT error 5 ashes 3 ashes Off Off 18
Compressor position error 5 ashes 5 ashes Off Off 1A
Outdoor fan motor error 5 ashes 6 ashes Off Off 1b
Connected indoor unit error 5 ashes 7 ashes Off Off 1F
Main CPU-sub CPU communication error 5 ashes 8 ashes Off Off 1C
Indoor Unit Fan Motor Error
Indoor fan motor lock error 6 ashes 2 ashes Off Off 12
Indoor fan motor speed error 6 ashes 3 ashes Off Off 12
Refrigerant System Error
Discharge pipe thermistor error 7 ashes 2 ashes Off Off 0F
Cooling high pressure abnormal rise 7 ashes 3 ashes Off Off 14
High pressure switch error 7 ashes 6 ashes Off Off 16
Added Function Error
Active lter module (AFM) error (Second time) 8 ashes 2 ashes Off Off 19
Active lter module (AFM) error (First time) 8 ashes 3 ashes - - -
PFC circuit error 8 ashes 4 ashes - - -
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
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