Troubleshooting
Samsung Electronics
4-23
4-3-16 The others
1. E465 : Compressor over load error
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If a compressor is normal, check the assembly between Heatsink-Inverter PBA. If it is fine, change Inverter PBA.
2. E468 : Current sensor error
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Check EEPROM data.
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Check PCB operates properly.
3. E471 : Oudoor EEPROM error
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Upload EEPROM on Outdoor unit Main PBA.
4. E474 : IPM(IGBT Module) or PFCM Temperature sensor Error
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E500 : IPM is over heated
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Check IPM is well assembled to heatsink
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Check whether inlet port is clogged.
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Change IPM if it is defective one
5. E554 : Gas leak error
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Check refrigerant charge
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Check Indoor EVA sensor
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Check Service valve is open.
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Check the pipes and wires correctly connected.
6. E556 : Capacity miss match between indoor and outdoor
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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
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Check whether the fan and the motor operate normally.
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Check the operation of EEV.
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Check the temperature sensor of the indoor unit heat Exchanger.
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Check the indoor unit inlet blocking.
