Samsung AC026RN1DKG Service Manual page 159

Gas leakage error (Error Code : E554)(Cont.)
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Is service valve fully opened?
Is the indoor EVA sensor correctly
connected?
Is refrigerant charged?
Replace the inverter PCB.
Samsung Electronics
Yes
Yes
Yes
Yes
No
No
Reconnect the sensor connector.
No
Charge the refrigerant.
Troubleshooting
Open the valve.
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