Samsung AC018JNHDCH/AA Service Manual page 37

LED Display on the receiver & display unit
Abnormal conditions
Communication error between indoor units
1. Error of electronic expansion valve close
2. Error of electronic expansion valve open
3. 2'nd detection of high temperature cond
4. 2'nd detection of high temperature
discharge
5. Error of reverse phase
6. Compressor down due to 6th detection
of freezing
Clogging of outdoor's service valve
Detection of the float switch
Error of setting option switches for optional
accessories
Error of EEPROM or OPTION SETTING
●
On Flickering X Off
◆
If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
4-2
Indicators
Concealed Type
Green Red
Standard Type
X X X
X X
X X
X X X
X X X
Remarks
Samsung Electronics