Troubleshooting
Samsung Electronics
4-5
Error indicator
LED
Error type
Yellow
Green
Red
○
◎
●
Indoor unit pipe entrance temperature sensor is detached
○
◎
●
Indoor unit pipe exit temperature sensor is detached
○
◎
●
Indoor unit Tracking Error
◎
●
●
Indoor unit normal operation communications error
○
○
●
Outdoor unit PBA communications error
◎
○
◎
External Out temperature sensor error
◎
●
◎
External Cond temperature sensor error
○
◎
●
Self-diagnosis – external Cond temperature sensor is detached
◎
◎
○
External Discharge temperature sensor error
○
◎
●
Self-diagnosis – external Discharge temperature sensor is detached
○
◎
●
External OLP temperature sensor error
○
◎
●
Internal defrost protection control
○
◎
●
Internal overload protection control
◎
○
●
External Discharge protection control
○
◎
●
Self-diagnosis – open EEV
●
◎
○
Prohibit cooling maneuver
●
◎
○
Prohibit heating maneuver
●
○
○
Problematic Outdoor unit FAN Motor error
○
◎
○
Problematic compressor maneuver operation error
●
◎
●
Electric current protection control
○
◎
●
Outdoor unit OLP protection control
○
○
◎
Compressor electric current overload error
◎
●
○
Compressor abnormal error
○
●
◎
Problematic external controller internal voltage error
●
○
●
Compressor wire connection error
◎
◎
●
Problematic compressor electric current sensor error
●
◎
◎
Problematic external controller internal voltage sensor error
●
◎
●
EEPROM error
●
●
◎
Problematic Outdoor unit power frequency error
○
◎
◎
Problematic radiator temperature sensor error
○
●
◎
AC overvoltage protection
◎
◎
●
Problematic external controller incoming current sensor error
◎
●
●
Radiator overheating error
●
●
○
Refrigerant leakage error
Normal operation
○
◎
●
● :
On
, ○ :
Off
, ◎ :
Blinking
4-2-2 Outdoor unit
