Troubleshooting
Samsung Electronics 321
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-109
Communication address not confirmed other outdoor unit communication error that is not on
the above list
E-110
Communication error between Hydro unit HT(Main PBA) and Control kit PBA(Detection from the
Control kit)
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-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
E-201
Communication error between indoor and outdoor units (installation number setting error,
repeated indoor unit address, indoor unit communication cable error)
E-202
Communication error between indoor and outdoor units (Communication error on all indoor
unit, outdoor unit communication cable error)
E-203 Communication error between main and sub outdoor units
E-205 Communication error on all PBA within the outdoor unit C-Box, communication cable error
E-206
E206-C001: HUB PBA communication error / E206-C002: FAN PBA communication error
E206-C003: INV1 PBA communication error / E206-C004: INV2 PBA communication error
ᆧ Diagnosis and Adjustment (Error Code)
ଌ Error code related indoor unit
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