28
English
A
ppendix
Troubleshooting
Abnormal conditions
LED lamp display
Remarks
Operation
Defrost
Timer
Filter
Power reset
X
X
X
Error of temperature sensor in the indoor unit
(Open/ Short)
X
X
X
Error of heat exchanger sensor in the indoor unit
(Open/Short)
X
X
Error of fan motor in the indoor unit
X
X
X
Error of the outdoor temperature sensor
Error of the condensor temperature sensor
Error of the discharge temperature sensor
X
X
No communication for 2 minutes between
indoor and outdoor unit (communication error
for more than 2 minutes)
X
X
Error of outdoor unit
Error of the terminal block thermal fuse (Open)
X
Detection of the float switch
X
X
EEPROM ERROR
EEPROM option error
Outdoor valve clogging error
X
MDS (Motion Detecting Sensor) Error
X
X
Error due to connecting outdoor units that do not
support the Wind-Free function
X
: On, : Flickering, X : Off
• If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
Summary of Contents for AC NN4DKH Series
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