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Appendix
• If an error occurs during the operation, one or more LED flickers and the operation is stopped except the LED.
• If you re-operate the air conditioner, it operates normally at first, then detect an error again.
LED Display on the indoor unit
AC052/071RNCDKG
Abnormal conditions
Indicators
Remarks
Power reset
Error of temperature sensor in indoor
unit (OPEN/SHORT)
Displayed on appropriate
indoor unit which is operating
Error of the indoor unit pipe sensor
Displayed on appropriate
indoor unit which is operating
Error of the outdoor unit pipe sensor
Displayed on appropriate
indoor unit which is operating
Displayed on outdoor unit
Communication error (Transmitter,
wired remote control)
Error of indoor unit:
Displayed on the indoor unit
regardless of operation
Communication error between
indoor units
Error of outdoor unit:
Displayed on the indoor unit
which is operating
Error of peripherals option
set-up
EEPROM error
EEPROM option error
High pressure blockage error
(Refrigerant completely Leakage
error)
Error of outdoor Unit/Self-
Diagnosis(Check error code in outdoor
unit or solution display or thermal
fuse on Indoor’s POWER T/B(open))
: On, : Blinking, X : Off
• If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
• If you re-operate the air conditioner, it operates normally at first, then detects an error again.
Appendix
Troublshooting
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