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Troubleshooting
Detection of errors
f If an error occurs during the operation, one or more LED ickers and the operation is stopped except the LED.
f If you re-operate the air conditioner, it operates normally at rst, then detect an error again.
LED Display on the indoor unit
LED Display
Abnormal conditions
Indicators
Remarks
Blue Green Orange Red
Power reset
×××
0.5[S]=On, 0.5[S]=O
Operation on
●
×××
Operation o
××××
Reservation
×
●
××
Filter sign
××
●
×
Defrosting
×××
1[S]=On, 9[S]=O
Smart install Error
×××
●
Communication error between indoor units
× ××
EEPROM error /EEPROM option error
××
Error of temperature sensor in indoor unit
(open/short)
×××
Error of outdoor Unit/Self-Diagnosis
×× ×
Error of the indoor unit pipe sensor
× ×
High pressure blockage error
×× ×
Indoor fan error
××
Thermal fuse open error
× ×
Indoor unit oat S/W 2nd detection
× ×
● On Flickering X O
f If you turn o the air conditioner when the LED is ickering, the LED is also turned o.
f If you re-operate the air conditioner, it operates normally at rst, then detects an error again.
f If the LED displays only one color, it is turned on for a second and turned o for a second.
f If the LED displays more than two colors, each color is shown for a second alternately.
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