Troubleshooting
4-14 Samsung Electronics
CODE Explanation
E-101 Indoor unit communication error. Indoor unit can not receive any data from outdoor unit.
E-102 Communication error between indoor unit and outdoor unit. Displayed in indoor unit.
E-108 Error due to repeated address setting (When 2 or more devices has same address within the network)
E-121 Error on indoor temperature sensor of indoor unit (Short or Open)
E-122 Error on EVA IN sensor of indoor unit (Short or Open)
E-123 Error on EVA OUT sensor of indoor unit (Short or Open)
E-128 EVA IN temperature sensor of indoor unit is detached from EVA IN pipe
E-129 EVA OUT temperature sensor of indoor unit is detached from EVA OUT pipe
E-130 Heat exchanger in/out sensors of indoor unit are detached
E-135 RPM feedback error of indoor unit's cleaning fan
E-149 Error due to AHU master indoor unit sensor setting.
E-151 Error due to opened EEV of indoor unit (2nd detection)
E-152 Error due to closed EEV of indoor unit (2nd detection)
E-153 Error on floating switch of indoor unit (2nd detection)
E-154 RPM feedback error of indoor unit
E-161
Mixed operation mode error of indoor unit; When outdoor unit is getting ready to operate in
cooling (or heating) and some of the indoor unit is trying to operate in heating (or cooling) mode
E-162 EEPROM error of MICOM (Physical problem of parts/circuit)
E-163
Indoor unit's remote controller option input is Incorrect or missing.
Outdo or unit EEPROM data error
E-180 Simultaneous opening of cooling/heating MCU SOL V/V (1st detection)
E-181 Simultaneous opening of cooling/heating MCU SOL V/V (2nd detection)
E-185 Cross wiring error between communication and power cable of indoor unit
E-186 Connection error or problem on SPi
E-190
No temperature changes in EVA IN during pipe inspection or changes in temperature is seen in
indoor unit with wrong address
E-191
No temperature changes in EVA OUT during pipe inspection or changes in temperature is seen in
indoor unit with wrong address
E-198 Error due to disconnected thermal fuse of indoor unit
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Diagnosis and Adjustment (Error Code)
ـ Error code related indoor unit
ـ Order of Error Display
Classification Error display method Display Example
Display method for error that occurred in
indoor unit
Error Number ࣖ Indoor unit address ࣖ
Error Number, repeat display
E471 ࣖ A002 ࣖ E471 ࣖ A002
Display method for error that occurred in outdoor
unit
and other methods of error display
Error Number ࣖ Outdoor unit address ࣖ
Error Number, repeat display
E471 ࣖ U200 ࣖ E471 ࣖ U200
E206 ࣖ C001 ࣖ E206 ࣖ C002
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