What Does Error Code E1 Mean on a Samsung Washing Machine?
Turn off the machine, shut off the water supply, disconnect the inlet hose, and clean the small mesh filter screens at the back of the machine using a toothbrush under running water, then reconnect and restart — blocked inlet screens are the most common cause of E1 and this fix resolves the majority of cases (takes about 10 minutes).
Fault description
Error code E1 appears on your Samsung washing machine when the control board cannot confirm that water is entering the drum within the expected time. The machine monitors water intake through a pressure switch (also called a water level sensor), and if it doesn't detect a rise in water level after the fill valve opens, it stops the cycle and displays E1 to protect the drum and motor from running dry.
When this error occurs, the wash cycle will pause or fail to start, and in most cases the drum will remain empty or nearly empty. You may hear the machine attempting to fill — a faint buzzing or clicking from the inlet valve area — but no water actually enters, or only a trickle gets through.
The good news is that E1 is frequently caused by something straightforward, such as a blocked filter screen or a closed water tap, and can often be resolved without any specialist tools or parts.
Causes
- Blocked inlet hose filter screens — Small mesh screens sit inside the inlet hose connections at the back of the machine and catch sediment from the water supply. Over time these screens become clogged with limescale and debris, restricting or completely stopping water flow.
- Water supply tap turned off or restricted — If the tap supplying the washing machine has been partially or fully closed — perhaps after maintenance work — the machine will not receive enough water to trigger the pressure switch. Always check this first before investigating further.
- Faulty or seized water inlet valve — The inlet valve is an electrically operated solenoid that opens to allow water in. If the solenoid coil fails or the valve body becomes clogged with mineral deposits, it will not open fully or at all, preventing water from entering the drum.
- Kinked or crushed inlet hose — If the machine has been pushed back against a wall, the inlet hose can become kinked, sharply reducing water flow. Even a partial kink can be enough to trigger E1 if flow is too slow for the machine's fill timer.
- Faulty water level sensor (pressure switch) — The pressure switch monitors the water level inside the drum via a small air chamber and hose. If the sensor itself fails, or if the air hose connecting it to the drum becomes blocked or detached, the machine may report E1 even when water is actually entering.
- Low mains water pressure — Samsung washing machines require a minimum water pressure — typically around 0.5 bar — to open the inlet valve and fill within the allowed time. Unusually low household water pressure, particularly during peak demand periods, can occasionally trigger E1.
Step-by-Step Fix
- 1
Check the water supply tap
Locate the tap on the water supply pipe behind or beside the machine and confirm it is fully open. Turn it anticlockwise as far as it will go. Also check that no other taps in the house are running simultaneously, which could temporarily reduce pressure.
- 2
Inspect and clean the inlet hose filter screens
Turn off the water supply tap and place a towel under the hose connection at the back of the machine. Unscrew the inlet hose by hand and look inside the machine's inlet port — you will see a small mesh screen. Use a pair of needle-nose pliers to carefully pull it out, then rinse it under a tap and scrub gently with an old toothbrush. Refit the screen, reconnect the hose, and turn the water back on.
- 3
Check the inlet hose for kinks or damage
Pull the machine slightly away from the wall and run your hand along the full length of the inlet hose. Straighten any kinks and ensure the hose is not pinched under the machine's feet or trapped against the wall. If the hose is cracked or has a permanent deformation, replace it.
- 4
Power cycle the machine
Switch the machine off at the power button, then unplug it from the wall socket. Wait at least two minutes before plugging it back in and switching it on. This clears any temporary fault stored in the control board and allows the machine to run its startup checks fresh.
- 5
Test the water inlet valve
With the machine unplugged, disconnect the inlet hose and check whether water flows freely from the tap into a bucket — this confirms the supply side is clear. If supply is fine but the machine still won't fill, the inlet valve itself may be at fault. You can test the solenoid coil with a multimeter set to resistance; a reading outside the manufacturer's specified range (typically 200–500 ohms) indicates a failed coil requiring valve replacement.
- 6
Inspect the pressure switch hose
The pressure switch is usually located near the top of the machine cabinet and is connected to the drum by a thin rubber or plastic hose. With the machine unplugged, remove the top panel (usually two screws at the rear) and trace the hose from the switch down to the drum. Check that it is firmly attached at both ends and has no cracks, splits, or blockages. Blow gently through it to confirm it is clear.
- 7
Reset the error and run a test cycle
After completing any of the above steps, reset the machine by holding the Start/Pause button for three to five seconds, or by switching it off and on again. Select a short wash cycle such as a quick wash or rinse cycle and watch the machine during the fill phase to confirm water is entering the drum normally and the E1 code does not return.
Affected models
Select your model to see its full troubleshooting page.
When to call a service technician
If you have cleaned the filter screens, confirmed the water supply is fully open, checked the hose for kinks, and power cycled the machine — and the E1 error still appears — the fault is likely inside the machine itself. A failed inlet valve solenoid, a defective pressure switch, or a wiring fault between these components and the control board all require disassembly and testing with specialist equipment.
You should also contact a service technician if you notice water leaking from the inlet valve area, if the machine makes an unusual buzzing or clicking sound during the fill phase without any water entering, or if the error code appears intermittently and unpredictably, which can point to a failing control board rather than a simple blockage.
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Frequently Asked Questions
Can I still use my washing machine while it is showing error code E1?
No — when E1 is active the machine has halted the cycle because it cannot confirm water is in the drum. Running the motor without water risks damaging the drum bearings and heating element. Resolve the fault before attempting another wash cycle.
How do I clear the E1 error code once I have fixed the problem?
On most Samsung models, the error clears automatically once the underlying fault is resolved. If the code remains on screen, hold the Start/Pause button for three to five seconds, or switch the machine off at the mains, wait two minutes, and switch it back on. Then run a short test cycle to confirm the fault is gone.
Could low water pressure in my home cause the E1 error?
Yes, though it is less common than a blocked filter screen. Samsung machines need a minimum of around 0.5 bar to fill correctly. If your water pressure is borderline, E1 may appear only at certain times of day when demand on the supply is high. A plumber can measure your household pressure and advise whether a booster pump is needed.
Is the E1 error the same as the 4E or 4C error on newer Samsung machines?
Yes — E1 is the older display format used on earlier Samsung washing machine models, while 4E and 4C represent the same water supply fault on machines with more modern displays. The causes and fixes are identical across all three codes.
How much does it cost to replace a Samsung washing machine inlet valve?
The inlet valve part itself typically costs between £15 and £45 depending on the model. If you are comfortable with basic appliance repair, it is a straightforward replacement involving disconnecting two hoses and a wiring connector. If you prefer a service technician to carry out the work, expect to add a call-out and labour charge on top of the part cost.