FRIGIDAIRE FFTW4120SW Error
| CONF | DIAGNOSIS | PART MATCH | ACTION |
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91%
CONF
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Water Inlet Valve Assembly
The E1 code is a 'Long Fill' error triggered when the control board does not receive a frequency signal from the pressure sensor indicating that water has reached the minimum level. This is statistically caused by a failure of the solenoid coils or the internal pilot-operated diaphragm within the valve assembly, which restricts or completely blocks the flow of water. Replacing the valve assembly ensures the electromechanical path for water delivery is restored.
SKU: 5304523157
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CHECK PRICE |
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5%
CONF
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Water Level Pressure Switch
If the water inlet valve is functioning correctly and water is physically entering the tub, the pressure transducer (switch) is the failed component. It fails to convert the hydrostatic pressure of the water in the tub into an electrical signal, leading the control board to believe the unit is empty and triggering the E1 timeout.
SKU: 5304522880
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CHECK PRICE |
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4%
CONF
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Pressure Switch Hose
A pinhole leak or crack in the clear plastic pressure tube results in a loss of pneumatic pressure. Without this pressure, the sensor cannot accurately detect the water level, causing the system to exceed its fill-time limit even if water is present.
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CHECK PRICE |
DIY Repair Guide
Watch exactly how to replace the Water Inlet Valve Assembly.