Samsung AM036NXMDCR Service Manual page 36

Troubleshooting
Error mode
When there's at least one or more actual number of indoor unit connection compared to number of indoor
E-218
units assigned to MCU
E-219 Error on temperature sensor located on MCU intercooler inlet (Short or Open)
E-220 Error on temperature sensor located on MCU intercooler outlet (Short or Open)
E-221 Error on outdoor temperature sensor of outdoor unit (Short or open)
E-231 Error on COND OUT temperature sensor of main outdoor unit (Short or Open)
E-241 COND OUT sensor is detached
E-251 Error on discharge temperature sensor of compressor (Short or Open)
E-262 Discharge temperature sensor of compressor is detached from the sensor holder on the pipe
E-266 Top sensor of compressor is detached
E-269 Suction temperature sensor is detached from the sensor holder on the pipe
E-276 Error on top sensor of compressor (Short or Open)
E-291 Refrigerant leakage or error on high pressure sensor (Short or Open)
E-296 Refrigerant leakage or error on low pressure sensor (Short or Open)
E-308 Error on suction temperature sensor (Short or Open)
E-311 Error on temperature sensor of double layer pipe/liquid pipe(sub heat exchanger) (Short or Open)
E-321 Error on EVI (ESC) IN temperature sensor (Short or Open)
E-322 Error on EVI (ESC) OUT temperature sensor (Short or Open)
E-323 Error on suction sensor 2 (Short or Open)
E-407 Compressor operation stop due to high pressure protection control
E-410 Compressor operation stop due to low pressure protection control or refrigerant leakage
E-416 Compressor operation stop due to discharge temperature protection control
E-425 Phase reversal or phase failure (3Ø outdoor unit wiring, R-S-T-N ), connection error on 3 phase input
E-428 Compressor operation stop due abnormal compression ratio
E-438 EVI (ESC) EEV leakage or internal leakage of intercooler or incorrect connector insertion of EVI (ESC) EEV
E-439 Error due to refrigerant leakage
E-440 Heating mode restriction due to high air temperature
E-441 Cooling mode restriction due to low air temperature
E-442 Refrigerant charing restriction in heating mode when air temperature is over 15 °C
E-443 Operation prohibited due to low pressure
E-446 Error due to operation failure of Fan1
E-447 Motor wire of Fan1 is not connected
E-458 Lock error on Fan1
E-461 Error due to operation failure of inverter compressor
E-462 Compressor stop due to full current control or error due to low current
E-464 Error due to over-current of inverter compressor
E-465 V-limit error of inverter compressor
E-466 Error due to over voltage /low voltage of inveter PBA
E-467 Error due to unconnected wire of compressor 1
E-468 Output current sensor error of inverter PBA1
E-469 DC voltage sensor error of inver PBA1
E-474 IPM Heat sink error of Inverter PBA 1
E-475 Iinverter fan 2 Error
36
Cause
Samsung Electronics