The Others; E465 : Compressor Over Load Error; E468 : Current Sensor Error; E471 : Oudoor Eeprom Error - Samsung AC140JXADGH/EU Service Manual

Troubleshooting

4-3-23 The others

1. E465 : Compressor over load error

→ If a compressor is normal, check the assembly between Heatsink-Inverter PBA. If it is fine, change Inverter PBA.

2. E468 : Current sensor error

Check EEPROM data.
Check PCB operates properly.

3. E471 : Oudoor EEPROM error

Upload EEPROM on Outdoor unit Main PBA.
4. E474 : IPM(IGBT Module) or PFCM Temperature sensor Error
E500 : IPM is over heated
Check IPM is well assembled to heatsink
Check whether inlet port is clogged.
Change IPM if it is defective one
5. E554 : Gas leak error
Check refrigerant charge
Check Indoor EVA sensor
Check Service valve is open.
Check the pipes and wires correctly connected.
6. E556 : Capacity miss match between indoor and outdoor
Check the model name of indoor and outdoor unit and set option code on indoor unit again.
7. Outdoor overload protection control (at the stop of the compressor.) : E404
Check whether the fan and the motor operate normally.
Check the operation of EEV.
Check the temperature sensor of the indoor unit heat exchanger.
Check the indoor unit inlet blocking.
4-38 Samsung Electronics