Samsung front load washer 4e error code .Water valves and pressure switch already changed.

Hello
The 4E error code corrections.
When the filling continues for more than 40 minutes or there is no change of water level for 6minutes.
① Hose Kinked or Check the water Supply Hose(Flood Safety hose is not supported)
② Water Valve Defect (Check resistance approximately 1K~2KΩ) or filter blockage
③ Wire Harness connection problem
④ Main PBA (Check for AC 120V)
⑤ Hose Pressure Hole

Causes
* Water supply valve fault
* Main PCB fault
* Water supply hose might be bent or use flood safe

Step 1
* If the water supply valve has a wire disconnected, reconnect the wire.
* Check whether the water supply valve is clogged with foreign material and whether water is supplied continually.
* Check whether no water is supplied because of freezing in the winter season.
* If the PBA relay operates abnormally, replace the PBA.
* Check the resistance for the water supply valve. Resistance: 1.0 to 2.0 kΩ between the terminals of the water supply valve.
* Check whether there is foreign material in the water valve filter.
* If the water supply valve filter is clogged, clean filter.
* Check the inlet filters dirty or clogged.