Samsung AC018JNHDCH/AA Service Manual page 39

Display Explanation
Gas leak detected
Indoor Unit operating stop due to detect unknown error in Outdoor Unit
Compressor down due to freeze protection control
High Pressure SENSOR breakaway ERROR
Low Pressure SENSOR breakaway ERROR
COMP down by Compression Ratio control Error 1
Outdoor SUMP DOWN_1 Protection Control
COMP down due to Low PressureSensor Protection Control 1
MCU SOL Valve cooling/heating opening 1st at the same time
MCU SOL Valve cooling/heating opening 1st at the same time
Outdoor Unit Communication Error
Outdoor Unit -> communication error to Indoor Unit
System Down (All Indoor unit Short) due to Communication Error
Error due to repeated communication address
Error on float switch (2nd detection)
Outdoor unit EEPROM error
EEPROM OPTION SETTING ERROR
Error on thermal fuse of indoor unit (Open)
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