Washing machine stops mid cycle
When a washing machine stops mid-cycle, the most useful clue is exactly where on the cycle it stopped and what it was trying to do at that point. Check for an error code or flashing lights first – then work through the most likely causes based on the stage the machine had reached. Some causes can be investigated at home; others need a qualified engineer.
Never work on a washing machine while it is plugged in. Electrical faults inside washing machines have caused serious injuries and fatalities, including to experienced engineers. Only attempt internal investigation if you are confident and competent to do so safely. When in doubt, book a qualified engineer. See also: DIY repair safety advice.
A washing machine that stops, sticks, or aborts mid-cycle is one of the most common fault categories. The range of possible causes is wide, but working through the symptoms in a logical order will usually narrow it down quickly.
Step 1: Check for an Error Code
Most modern washing machines will display an error or fault code on the screen when they detect a problem – for example F10, E2, or a similar alphanumeric code. If your machine is showing a code, note it down before doing anything else.
Error codes are a useful starting point but are frequently misunderstood. They do not point directly to the failed component – they identify which part of the machine’s self-diagnostic system has flagged a problem, which may have several possible underlying causes. Before looking up any specific code, it is worth understanding how error codes work in practice. See our guide on appliance error codes – what you need to know, and our full washing machine error code guide.
Step 2: Check for Flashing Lights
On machines without a display screen, fault information is often communicated through a pattern of flashing indicator lights. Note exactly which LEDs are lit or flashing, and in what sequence – this information is important if you need to report the fault to an engineer or look it up in a fault guide.
See our guide on washing machine stops with lights flashing for how to read and report flashing light codes correctly. If the programme selector knob is clicking round continuously rather than stopping, see our guide on the programme dial clicking round continuously.
Step 3: Identify Where on the Cycle It Stopped
If there is no error code, or the code does not help, the most important question is: exactly what was the machine trying to do when it stopped? The answer narrows the likely causes considerably.
| Where It Stopped | Most Likely Cause | Guide |
|---|---|---|
| At the start, not filling with water | Inlet valve fault, low water pressure, or door interlock issue | Won’t fill with water |
| On rinse, not filling with water | Inlet valve fault or pressure system issue | Won’t fill with water |
| Filled but stuck on wash, not progressing to rinse | Heater not working – machine timed out waiting for water to reach temperature | Not heating up water |
| Stuck mid-cycle full of water | Drain pump blocked or failed, filter blocked, or drain hose kinked | Won’t drain water |
Washing Machine Fills Then Drains and Aborts Without Washing
This is a distinct fault pattern where the machine fills normally, but instead of beginning to wash, it sits for a few minutes then drains all the water and switches off. It can also happen mid-wash – the machine starts washing normally, then partway through drains everything and turns off.
Aborting Within the First 30 Minutes
If the machine aborts within the first 30 minutes or so, the most likely cause is a heater fault. The machine filled with water, began timing the heat cycle, and when the water failed to reach the target temperature within the allowed time, the programme aborted. See our guide on washing machine not heating up water for the most common causes.
Aborting Mid-Wash With Hot Water
If the machine aborts after 30 minutes or more and the water has clearly been heating – the drum and water feel hot – the machine may have detected overheating and shut down as a safety measure. This is often caused by a faulty thermistor (the temperature sensor used in modern machines). The thermistor may be sending an incorrect high-temperature reading, causing the machine to believe the water is dangerously hot when it is not.
A thermistor is a small component, usually positioned next to or inserted into the heating element, that changes its electrical resistance in proportion to temperature. Testing one requires a multimeter and basic electrical knowledge – see our guide on how to test an NTC thermistor. Overheating faults can be difficult to diagnose and repair without engineering experience.
Other Causes Worth Knowing About
A few less common causes are worth being aware of, particularly if the fault does not fit the patterns above.
- Heater relay fault (Hotpoint and Indesit) – on some models the heater relay on the main PCB can stick. This should produce a specific error code and is not a repair to attempt without confident electrical knowledge, as it may involve the main control board
- Insulation fault – some machines will abort if they detect any component has developed a slight leak to earth. This requires an insulation test meter operating at 500v DC to check and is strictly an engineer-level test
- Stuck on the final minute – some machines can appear to freeze with one minute remaining on the display, sometimes for long periods. This can be caused by a heater going open circuit mid-wash, faulty NTC connections, or other intermittent faults. It has many possible causes and is best investigated by an engineer
If the fault does not match a clear pattern, produces no error code, or involves suspected electrical faults inside the machine, it is best to have a qualified engineer investigate. Intermittent and multi-cause faults in particular are difficult to diagnose safely without the right equipment.
Need a Qualified Engineer?
If the fault is beyond DIY diagnosis, Whitegoods Help can connect you with a vetted repair company.
DIY Repair Safety
Top 4 DIY Repair Safety RulesThe non-negotiable safety rules before opening any appliance – from engineers who have seen what can go wrong.
8 Things You Should Never Do When Repairing a Washing MachineCommon DIY mistakes that cause injury, further damage, or make a fault harder to diagnose.
10 Tips for Safe DIY Washing Machine RepairA full safety checklist for anyone planning to investigate or repair a washing machine themselves.
DIY Washing Machine Repair DisasterA real example of how a DIY repair can go badly wrong – and what to learn from it.
Frequently Asked Questions
Why does my washing machine stop mid-cycle?
The most common causes are a heater fault (the machine timed out waiting for water to reach temperature), a drain fault (the machine cannot pump water out), or a fill fault (the machine cannot draw in water at the right stage). The point in the cycle where it stopped is the most important clue. Check for an error code or flashing light pattern first, then follow the guidance for the relevant stage.
Why does my washing machine fill with water then drain immediately without washing?
This usually indicates a heating fault. The machine filled with water, began the heat cycle, and aborted when the water failed to reach the target temperature within the allowed time. Less commonly it can be caused by a door interlock issue or a pressure system fault. See our guide on washing machine not heating up water for the most likely causes.
What does it mean if my washing machine is stuck on the last minute?
A machine that appears frozen with one minute remaining can have several causes, including a heater going open circuit mid-wash, faulty NTC thermistor connections, or other intermittent electrical faults. Because there are many possible causes, this type of fault is best diagnosed by a qualified engineer with the right test equipment.
Should I look up my washing machine error code?
Yes, but treat the code as a starting point rather than a definitive answer. Error codes identify which part of the machine’s self-diagnostic system flagged a problem – they do not point directly to the failed component. The same code can have several different underlying causes. Read our guide on how error codes work before investigating further.
Is it safe to investigate a washing machine fault myself?
Some checks – such as cleaning the pump filter, checking the drain hose, or reading an error code – are safe to carry out without specialist knowledge. Anything involving opening the machine and accessing electrical components should only be attempted if you are confident and competent to work safely with electrical appliances. Always unplug the machine first, and read the DIY repair safety guides linked above before starting.
Washing Machine Fills With Water When Off
Water in the drum when the machine is switched off comes from either a faulty or debris-blocked water inlet valve, or from siphoning through an incorrectly installed drain hose. Clean water points to the valve. Dirty or smelly water points to the drain hose. Check which type of water is present to direct the diagnosis immediately.
If your washing machine has water in the drum when you have not run a cycle, or is slowly filling up overnight, there are only two possible entry points for that water: a faulty water inlet valve, or a drain hose that is not installed correctly. This guide explains how to identify which is the cause, how to diagnose the fault in each case, and what the fix involves.
Step One: Identify the Water Type
The first diagnostic step is simple and takes no tools at all. Look at the water in the drum and assess it carefully.
Clean, clear water in the drumPoints strongly to a faulty water inlet valve. The valve is allowing mains water to seep past when it should be closed. The water is clean because it is coming directly from the mains supply. Go to the inlet valve section below.
Dirty, murky, or smelly water in the drumPoints strongly to drain hose siphoning. Water from the household drain system is being drawn back into the machine through an incorrectly installed drain hose. This is actually the most common cause of the two. Go to the drain hose section below.
If the water appears clear but has a musty or stale smell, it may have been sitting in the drum for some time after entering via a slowly seeping valve. This is still most likely a valve fault. The smell develops from the stagnant water rather than from a drain source.
Cause 1: Faulty Water Inlet Valve
The water inlet valve controls the flow of mains water into the washing machine. When the machine is not running, the valve should be fully closed, preventing any water from entering regardless of whether the tap is turned on. When a valve develops a fault, it can allow water to seep past slowly, filling the drum over hours or overnight.
Why valves fail
Internal valve faultThe valve contains a rubber diaphragm or solenoid mechanism that physically closes the water path when the machine is not filling. If this mechanism develops a fault, wears, or stiffens with age, it may not close completely and water seeps through slowly.
Debris or grit in the valveSmall particles of grit, limescale, or debris from the water supply can lodge in the valve seat and prevent it from closing fully. This is more common on older machines, in areas with hard water, or following any work on the mains supply that disturbs the pipework.
Blocked inlet filter reducing pressureWashing machine inlet valves use water pressure to help maintain the closed position. A blocked filter screen at the valve inlet reduces that pressure, which can prevent the valve from seating fully. A severely blocked filter is a less common cause but worth checking before condemning the valve.
Very low water pressureSome inlet valves rely on a minimum incoming pressure to push a rubber flange into the closed position. If the water pressure is very low, this seal may not engage fully and water can seep past. Read more: low water pressure and washing machines.
How to confirm the valve is the source
-
Turn off the water tap(s) to the washing machine. These are the isolating taps behind or under the machine on the inlet hoses. Turn them off fully and leave the machine switched off for several hours or overnight. If no water appears in the drum, the fault is confirmed as valve-related, and the tap was the supply source.
-
Verify the tap itself is not faulty. A tap can appear closed externally but be failing internally. To confirm the tap is actually shutting off the water, disconnect the fill hose from the back of the machine and point it into a bucket. Turn the tap off and check no water flows through. If water still comes through with the tap turned off, the tap itself needs replacing.
-
Observe the soap dispenser for slow dripping. Remove the dispenser drawer and look into the dispenser housing with the machine switched off. If water is slowly dripping in at intervals through the nozzles at the top of the housing, the valve is seeping. Do not check this immediately after a wash cycle as some residual dripping for a short period after filling is normal. If you also see a black jelly-like build-up around the entry points, read our guide on black jelly in the soap drawer.
-
Check the inlet valve filter. Turn off the tap and disconnect the fill hose from the back of the machine. The inlet valve filter is a small mesh screen visible at the back of the valve inlet. It should be clean. If it is visibly blocked with scale or debris, carefully pull it out with flat-nosed pliers and rinse it under a running tap. Handle it gently as even a small hole in the mesh compromises its function. Refit, reconnect the hose, turn the water back on, and recheck.
What to do if the valve needs replacing
If the filter is clean, the water pressure is adequate, and turning off the tap stops the water entering, the inlet valve itself needs replacing. Water inlet valves are a common spare part for most mainstream washing machine brands and are available through independent spare parts suppliers. You will need your exact model number to order the correct valve. See our spare parts guide for sourcing.
Valve replacement involves disconnecting the machine from the mains, disconnecting the fill hose, and accessing the valve from the back panel. On most machines it is a straightforward repair. If you are not confident working on electrical appliances, a qualified engineer should carry out the replacement.
A valve that is seeping slowly can seep faster as the fault progresses, and an unattended washing machine filling with water can overflow and cause significant flood damage. Turn off the tap when the machine is not in use until the valve has been replaced. Read: should you turn off the taps when the machine is not in use?
Cause 2: Drain Hose Siphoning (Most Common)
Drain hose siphoning is actually the more common of the two causes, and it is almost always the result of the drain hose not being installed correctly. When the drain hose does not rise high enough before connecting to the household drain, water from the sink or drain system can run back down the hose and into the machine by gravity or siphon action.
The water entering via this route is dirty because it comes from the household drain, explaining the murky or smelly appearance in the drum.
How the drain hose should be installed
The correct installation requires the drain hose to rise to a height of at least 60cm to 80cm above floor level before connecting to the household drain or standpipe. This rise creates an air break that prevents back-siphoning. Most washing machines are supplied with a formed plastic hook or clip that holds the hose at the correct height on the back of the machine before it drops down to the drain connection.
This creates a direct path for drain water to flow back into the machine whenever water goes down the sink. This is the most commonly seen drain hose installation error in the UK.
Drain hose connected to the U-bend under the sink
This is the most common drain connection arrangement in UK kitchens. The washing machine drain hose connects to a dedicated inlet on the U-bend pipe under the sink. For this to work safely, the hose must rise up before connecting down into the U-bend.
If the hose runs in a straight horizontal or downward path from the machine directly into the U-bend, any water poured down the sink can follow the hose directly into the washing machine. Even a hose that rises slightly but then dips back down before the connection can allow siphoning. The hose must rise to the correct height and stay there, using a cable tie to the back of the machine or the wall if necessary.
Drain hose connected to a standpipe
If the drain hose runs into a dedicated standpipe rather than a U-bend, siphoning is less likely but still possible in certain circumstances. The drain hose must sit inside the standpipe with an air gap around it, not be sealed into it with tape or putty. A sealed connection removes the air break and can create a siphon. Additionally, if the standpipe outside is submerged in water due to a blocked drain grate, water can be forced or siphoned back up the pipe. Check that the hose sits freely inside the standpipe and that the external drain is clear. Read: how to check the drain hose is installed properly.
How to fix a siphoning drain hose
-
Pull the machine out slightly and trace the drain hose. Follow the hose from the back of the machine to where it connects to the drain. Note whether the hose rises to a height of at least 60cm before coming back down to the connection point. If it runs downward without rising, the installation is incorrect.
-
Reposition the hose to create a proper rise. The hose needs to loop up as high as possible before descending to the drain connection. Use the plastic hose clip provided with the machine to hold it at the correct height on the back panel, or use a cable tie to fix it to the wall at the correct height.
-
Ensure there is an air gap at the drain connection. If the hose connects to a standpipe, it must sit loosely inside the standpipe with space around it, not be taped or sealed into it. If the hose connects to a U-bend fitting, the fitting should have a proper air break built in.
-
Run a test cycle and check for siphoning. After correcting the installation, run a cycle and observe whether the machine drains fully. Then leave it unused for several hours to confirm water is no longer entering the drum.
Safety: Turn Off the Taps When Not in Use
Regardless of which cause applies to your machine, this fault is a strong reason to adopt the habit of turning off the water supply taps to the washing machine after every use. A machine that is filling with water overnight can overflow if unnoticed, and a slow leak from a faulty valve can become a fast leak without warning.
The taps should take seconds to turn and the benefit, particularly when going away on holiday or leaving the house for extended periods, significantly outweighs the small inconvenience. Read our full guide: should you turn off the washing machine taps after each use?
Need a repair or spare parts?
If the water inlet valve needs replacing, or you would prefer a professional to diagnose and fix the fault, Whitegoods Help can connect you with a vetted repair company. For parts, our spare parts guide links to trusted UK suppliers.
Frequently Asked Questions
Why does my washing machine fill with water when it is switched off?
There are only two ways water can enter a washing machine when it is not running: through a faulty or debris-blocked water inlet valve, or by siphoning back through the drain hose. Clean water in the drum points to the valve. Dirty or smelly water points to the drain hose. Both causes and their fixes are described in full in the guide above.
How do I know if it is the valve or the drain hose causing the problem?
Check the water in the drum. If it is clean and clear, the inlet valve is the likely cause. If it is dirty, murky, or has a drain smell, the drain hose is the likely cause. You can also turn off the water supply taps to the machine. If water stops entering overnight with the taps off, the valve is confirmed as the source. If water still enters with the taps off, the drain hose is the cause.
I turned off the mains water supply and still found water in the drum. How is this possible?
If the mains supply is genuinely off and no water is reaching the inlet valves, the only remaining source is the drain hose. Water from the household drain system, including any water that runs down the sink, can siphon back into the machine through a drain hose that is not installed at the correct height. Check that the drain hose rises to at least 60cm before connecting to the drain, and that there is an air gap at the connection point rather than a sealed fitting.
The water in my drum is clean but the machine still fills overnight. Could it be the drain hose?
It is possible but less likely. Drain hose siphoning typically introduces dirty water because it draws from the household drain. If the water is consistently clean, the inlet valve is the more probable cause. However, if the drain hose connects to a clean water source in an unusual installation, or if the water has been sitting long enough to appear clear, the drain hose cannot be entirely ruled out. Turn off the inlet taps and check whether water still enters with the taps off to confirm.
Why does low water pressure cause a washing machine to fill when off?
Some water inlet valves use the pressure of the incoming water supply to push a rubber seal into the closed position. If the incoming pressure is very low, this seal may not engage fully and water can seep past slowly. This is a less common cause than valve wear or debris, but it explains why some households experience this fault even on relatively new machines. Read our guide on low water pressure and washing machines.
My new washing machine is filling with water when off. Can a brand new valve be faulty?
A manufacturing defect in a new valve is possible but uncommon. On a brand new machine, the drain hose installation is more likely to be the cause, particularly if the machine has just been connected up and the drain hose has not been checked for correct routing and height. Check the drain hose installation first before suspecting a faulty new valve. If the drain hose is correctly installed and the machine is still filling via the valve, contact the retailer as a manufacturing fault on a new appliance is covered by your consumer rights.
Is it safe to use the machine while it is filling with water when off?
Technically the machine may wash normally if the underlying fault is only causing slow seepage. However, a valve that is seeping slowly can fail further without warning and allow much faster flooding. The risk of overflow and water damage is real. Turn off the supply taps when the machine is not in use and arrange a repair as soon as possible. Do not leave the machine unattended with the taps on until the fault has been resolved.
Washing Machine Overfilling
A washing machine overfilling is most commonly caused by a blockage in the pressure chamber – a build-up of grease and residue that prevents the pressure system from detecting when the correct water level has been reached. If water continues entering after the machine is switched off, the inlet valve has jammed open and the water supply must be turned off immediately at the tap.
Turn off the water supply at the isolation tap immediately. A jammed inlet valve will not stop filling regardless of the machine’s controls. Do not attempt to investigate the machine until the water supply is isolated.
An overfilling washing machine may be obvious – water visible at the top of the door glass, spilling from the soap drawer, or running from the back of the machine. But many modern machines detect overfilling automatically, abort the cycle, and pump the water out before any visible flooding occurs. In those cases the only sign is a cycle that starts to fill and then unexpectedly stops and drains.
If the machine is producing excessive foam rather than overfilling with plain water, see our guide on too much foam in the washing machine instead.
First: Does the Filling Stop When You Switch the Machine Off?
This single check immediately separates two very different faults.
Water stops when machine is switched offThe inlet valve is working correctly. The fault is within the pressure system that tells the machine when to stop filling. This is the more common cause.
Water continues when machine is switched offThe inlet valve is jammed open. Turn off the water supply at the tap immediately. A new inlet valve will be needed – the machine cannot control filling until it is replaced.
The Most Common Cause: A Blocked Pressure Chamber
When the filling stops after the machine is switched off, the fault is almost always in the pressure system. Washing machines use a pressure chamber – a small sealed chamber at the base of the drum – connected by a thin hose to a pressure switch. As water rises in the drum, air is compressed in the chamber and hose, and the rising pressure triggers the switch to cut off the water supply at the correct level.
Over time, grease and detergent residue can build up inside the pressure chamber, partially or fully blocking it. When blocked, air pressure cannot rise correctly, the pressure switch never receives the signal to stop filling, and the machine continues taking in water beyond the normal level.
Clearing a blocked pressure chamber is a possible DIY repair for those with some appliance experience. See our guide on clearing a blocked pressure system for more detail. For a fuller explanation of how the pressure system works and the range of faults it can cause, see our guides on how washing machines control water levels and faults on pressure systems.
Other Overfilling Causes to Be Aware Of
A blocked pressure chamber is the most likely cause, but it is not the only one. Other faults in the pressure system – including a failed pressure switch, a split or disconnected pressure hose, or a faulty control board that is not correctly processing the pressure switch signal – can produce the same symptom. These require more investigation and in most cases the input of a qualified engineer.
Related Faults With Similar Symptoms
Two related faults are sometimes confused with a genuine overfilling problem.
Machine Fills and Drains at the Same Time
If water appears to be entering the machine but also running straight down the drain, so that the drum never seems to fill properly, this is a distinct fault caused by syphoning rather than overfilling. See our guide on washing machine fills and drains at the same time.
Machine Fills With Water When Switched Off
If water slowly enters the drum even when the machine is not running and completely switched off, this is caused by a leaking or partially jammed inlet valve – different from a valve jammed fully open during a cycle. See our guide on washing machine fills with water when switched off.
Need a Qualified Engineer?
Pressure system faults and valve replacements are straightforward for an experienced engineer. Whitegoods Help can connect you with a vetted repair company.
Related Guides
How Washing Machines Control Water LevelsA full explanation of the pressure system – how it works, what it controls, and why it is the most common source of overfilling faults.
Faults on Pressure SystemsThe full range of faults that can occur within the pressure system – including symptoms, causes, and what is involved in repair.
Washing Machine Fills and Drains at the Same TimeA related fault where water enters and drains simultaneously – caused by syphoning rather than a pressure system fault.
Washing Machine LeakingIf the overfilling has caused water to escape, this guide covers the most common leak points and their causes.
Frequently Asked Questions
Why is my washing machine overfilling with water?
The most common cause is a blockage in the pressure chamber – a build-up of grease and residue that prevents the pressure system from detecting when the correct water level has been reached. Less commonly, the fault may be a failed pressure switch, a split pressure hose, or a faulty control board. If water continues entering after the machine is switched off, the inlet valve has jammed open and the water supply must be turned off immediately.
How do I know if the problem is the inlet valve or the pressure system?
Switch the machine off. If the water stops entering immediately, the inlet valve is working correctly and the fault is in the pressure system. If water continues to flow in with the machine switched off, the inlet valve has jammed open and will need replacing.
What should I do if my washing machine is overflowing?
Turn off the water supply at the isolation tap behind or beside the machine. If the machine is still running and pumping, let it finish pumping out the water before investigating further. Once the water supply is isolated and the drum is empty, the machine is safe to leave until it can be repaired.
Can I fix an overfilling washing machine myself?
If the cause is a blocked pressure chamber, clearing it is a possible DIY repair for those with some appliance experience. Other pressure system faults – a failed switch, split hose, or control board issue – are more involved and in most cases better left to a qualified engineer. Replacing a jammed inlet valve is within the scope of a competent DIY repairer but does require isolating the water supply and basic plumbing confidence.
My washing machine fills then immediately drains without washing – is that overfilling?
Not necessarily. If the machine detects overfilling, it may abort and drain as a safety response – in which case overfilling is the cause. But a machine that fills and drains without washing can also be caused by a heating fault (the water never reached temperature) or by syphoning through the drain hose. Check our guides on washing machine stops mid-cycle and washing machine fills and drains at the same time for more detail.
Washing machine fills and drains at same time
A washing machine that fills and drains simultaneously is usually caused by one of two things: the drain hose is siphoning water away due to incorrect plumbing, or the machine is deliberately pumping water out because it has detected a fault such as overheating. The first step is to determine whether the water is draining by gravity or being actively pumped out – this immediately separates the two fault types.
Observing exactly where on the cycle the problem occurs, and whether the drain pump is running, narrows the cause significantly and determines what to look at next.
Step 1: Is the Water Being Pumped Out or Draining by Gravity?
This is the most important diagnostic question. Listen carefully while the machine is trying to fill.
Drain pump is NOT runningWater is draining by gravity – this is siphoning. The drain hose is too low and water is flowing out without the pump running. See the siphoning section below.
Drain pump IS runningThe machine is actively pumping water out – this is a controlled response to a detected fault, most commonly overheating. See the fault pumping section below.
Do not confuse the drain pump with a recirculation pump if fitted. Recirculation pumps run during the wash cycle and return water back into the drum – they do not pump water away. The drain pump is the one that empties the machine during rinse and spin cycles.
If the Pump Is Running: Possible Fault Causes
Overheating
Modern washing machines monitor water temperature and will abort the wash cycle if the water overheats. The machine pumps out the hot water and may simultaneously draw in cold water to reduce the temperature. When this happens, the machine should also display an error code – either through flashing indicator lights or a code on the digital display.
Overheating will typically occur on the wash cycle, and only after at least 30 minutes have elapsed – enough time for the water to have reached temperature. The water inside the drum should be visibly very hot. Once the machine has pumped away the water and cooled down, it should switch off and display the error code.
A faulty thermistor (temperature sensor) can also trigger this behaviour by sending false high-temperature readings to the control board, causing it to abort unnecessarily even when the water is not actually overheating. See our guide on how to test an NTC thermistor – though this type of fault is generally best investigated by a qualified engineer.
Continuous Pumping From Switch-On
If the drain pump runs continuously from the moment the machine is switched on and will not stop, this may indicate an insulation fault within the machine. Do not attempt to investigate this further – switch the machine off and contact a qualified engineer.
If the Pump Is NOT Running: Siphoning
Siphoning occurs when the end of the drain hose is positioned lower than the water level inside the washing machine drum. Water always seeks its own level – if the drain hose end is below the water in the drum, water will flow out continuously by gravity without any pump being needed, in the same way liquid siphons through a tube.
The washing machine detects that the water level is falling, and responds by filling with more water – creating a cycle where it fills and drains simultaneously. Most modern machines will eventually detect this as a fault and abort, displaying an error code. If the machine does not detect it, the cycle can continue indefinitely.
The drain pump is running – pumping and siphoning are mutually exclusive. Siphoning is also very unlikely if the drain hose connects to the U-bend under the sink, as this connection point is high enough to prevent it.
What Causes Siphoning?
Siphoning most commonly occurs when the washing machine has been moved – pulled out for cleaning, or relocated to a new property – and the drain hose has been pushed too far down into the standpipe, or the standpipe has tilted or fallen over. The drain hose end must remain above the water level inside the drum at all times.
How to Fix Siphoning
The drain hose must not be pushed too far down into the standpipe. The correct installation uses a drain hose crook – a curved fitting at the end of the drain hose that hooks over the top of the standpipe. This prevents the hose from being pushed too deep and also helps keep it in place. The length of hose extending below the crook into the pipe should be no more than approximately 10 to 15cm.
The standpipe itself must be adequately secured to the wall so it cannot tilt or fall. Full installation height requirements for the standpipe should be in the machine’s instruction manual or on the installation sheet supplied with it. See our full guide on how to install the drain hose correctly, and our guide on connecting a washing machine properly.
Could It Be Overfilling Instead?
If the water level in the drum is visibly much higher than normal, the fault may be overfilling rather than siphoning or a fault abort. In some cases, an overfilling machine can trigger siphoning – the higher water level causes water to flow out via a correctly-positioned standpipe through gravity. If you can see the drum is clearly overfilling, see our guide on washing machine overfilling.
Need a Qualified Engineer?
If the fault persists after checking the drain hose position, or if the pump is running continuously, a qualified engineer should investigate.
Related Guides
How to Install the Drain Hose CorrectlyCorrect drain hose installation including standpipe height, anti-syphon requirements, and common mistakes that cause drain faults.
Washing Machine OverfillingIf the drum water level is much higher than normal, the issue may be overfilling rather than siphoning.
How to Connect a Washing Machine ProperlyA complete guide to connecting inlet and drain hoses correctly, including standpipe height requirements.
DIY Repair Safety GuideEssential safety rules before working on any washing machine – electrical or otherwise.
Frequently Asked Questions
Why is my washing machine filling and draining at the same time?
There are two main causes. If the drain pump is not running, the water is siphoning out due to the drain hose being positioned too low – a plumbing issue that can usually be fixed by adjusting the drain hose position. If the drain pump is running, the machine is deliberately pumping water out because it has detected a fault, most commonly overheating or a sensor error.
How do I know if my washing machine is siphoning?
If the drain pump is not running but water is still leaving the drum, the hose is siphoning. This typically happens when the machine has recently been moved and the drain hose has been pushed too far into the standpipe, or the standpipe has tilted. Siphoning is not possible if the pump is running, and is very unlikely if the drain hose connects to the U-bend under the sink.
How do I stop my washing machine drain hose from siphoning?
Ensure the end of the drain hose is correctly positioned using a drain hose crook – a curved fitting that hooks over the standpipe and prevents the hose being pushed too deep. The hose end should extend no more than approximately 10 to 15cm into the standpipe. The standpipe must also be properly secured to prevent tilting. Correct standpipe height requirements are detailed in the machine’s installation instructions.
Could overheating cause a washing machine to pump out water while filling?
Yes. If the machine detects the water has overheated, it will pump out the hot water and may simultaneously bring in cold water. This should only happen on the wash cycle after at least 30 minutes of running, the water should be visibly very hot, and the machine should display an error code. A faulty thermistor can trigger the same response with false readings even when the water is not actually overheating.
What should I do if the drain pump runs continuously from switch-on?
Switch the machine off immediately and contact a qualified engineer. Continuous pump operation from the moment the machine is switched on, without any fill cycle occurring, may indicate an insulation fault. This is not a fault to investigate or work around without professional assessment.
Washing machine dial keeps turning and clicking
A washing machine selector knob clicking round continuously on its own means the machine has aborted the programme due to a fault. This is a crude fault-detection method used on older machines – particularly older Indesit and Hoover models. The point in the cycle where the clicking starts can help narrow down the cause, but the range of possible faults is wide.
On older washing machines without digital displays, a continuously rotating selector dial is the machine’s way of indicating that something has gone wrong. Unlike a modern error code, it gives very little information about what the fault actually is – but the timing of when it starts can still provide useful clues.
What Does the Clicking Dial Mean?
When the selector knob clicks round automatically, the machine has detected a fault and aborted the programme. The control system is cycling through positions looking for a valid state. This method of fault indication is extremely basic and provides almost no specific diagnostic information beyond the fact that something has gone wrong.
On most modern washing machines this behaviour has been replaced by digital error codes or flashing indicator lights. If your machine shows lights flashing alongside the clicking dial, note which lights are flashing and see our guide on washing machine lights flashing – the light pattern may give more specific fault information than the clicking alone.
Using the Timing to Narrow Down the Cause
The point in the cycle where the clicking begins offers the most useful diagnostic clue available.
| When the Clicking Starts | Possible Cause | What to Check |
|---|---|---|
| During or after the rinse cycles | Drain fault – machine cannot pump water away | Check the pump filter for a blockage |
| After several minutes on the wash cycle | Heating fault – water not reaching temperature | Washing machine not heating water |
| From the very beginning | Control board fault, wiring, or insulation fault | A qualified engineer should investigate |
| At any unpredictable point | Intermittent fault – connection, PCB, or thermistor | A qualified engineer should investigate |
Why Is It So Difficult to Diagnose?
The clicking dial mechanism gives no specific fault code – only that the machine has aborted. The range of possible underlying causes is wide: a drain fault, a heating fault, a low insulation reading on the heater or motor, a faulty PCB control module, a faulty thermistor, or even just a poor electrical connection somewhere in the wiring. Even experienced engineers can find this type of fault difficult to trace because there is so little information to work from.
For broader context on why older fault-detection systems offer such limited information, see our guide on appliance error codes – friend or foe? and our guide on washing machine sticking or stopping mid-cycle for a broader look at this type of fault.
How to Reset an Indesit Washing Machine With a Selector Knob
Some older Indesit washing machines have an unusual programme reset procedure. On these machines, turning the selector knob while a programme is running does not cancel it – the machine will simply click the knob round trying to find and resume the original programme. There is no cancel button on these models.
To properly reset the programme on an older Indesit with a selector knob and no cancel button, follow these steps:
-
Turn the machine off using the on/off button.
-
Turn the selector knob to a dot or any “off” position on the dial.
-
Turn the machine back on and watch for rapid flashing on the indicator light.
-
Turn the machine off again, then select the new programme you want to run.
-
Turn the machine back on – the new programme should now start correctly.
If the selector knob continues clicking round after being reset, the machine has detected a genuine fault that needs to be investigated. The reset procedure only clears the programme state – it does not repair whatever caused the abort. The machine needs to be diagnosed and repaired.
Need a Qualified Engineer?
If the clicking persists after checking the pump filter and drain, the fault is likely beyond straightforward DIY repair.
Related Guides
Washing Machine Lights FlashingHow to read and report flashing indicator light patterns – which can give more specific fault information than the clicking dial alone.
Washing Machine Stops Mid-CycleA broader guide to diagnosing washing machines that abort or stop at different points in the cycle.
Washing Machine Pump FilterHow to locate, access, and clean the pump filter – the most common cause of drain-related programme aborts.
Washing Machine Not Heating WaterCauses and diagnosis for a machine that fails to heat the wash water – another common reason for programme abort.
Frequently Asked Questions
Why is my washing machine selector knob clicking round on its own?
The machine has detected a fault and aborted the programme. The rotating dial is the fault-indication method used on older machines – particularly older Indesit and Hoover models – in the absence of a digital display. It provides very little specific information about what has gone wrong, other than that something has caused the programme to stop.
Can I tell what the fault is from when the clicking starts?
Sometimes. If clicking starts during or after the rinse cycles, a drain fault is the most likely cause – check the pump filter first. If it starts after several minutes on the wash cycle, a heating fault is more likely. If it starts immediately or at unpredictable points, the cause is likely electrical – a PCB fault, wiring issue, or thermistor problem – and a qualified engineer should investigate.
How do I reset an Indesit washing machine with a selector knob?
Turn the machine off, turn the knob to an off or dot position, turn the machine back on and wait for rapid indicator light flashing, then turn it off again. Select the new programme you want, then turn back on. On these older Indesit models, turning the knob mid-programme causes the machine to click round searching for the original programme rather than cancelling – the specific off-switch reset procedure is needed to clear the state properly.
Will resetting the machine fix the clicking problem?
Only if the clicking was caused by a one-off event such as an unbalanced load or a temporary glitch. If a genuine fault is present, the machine will abort and the dial will start clicking again. The reset clears the programme state but does not repair the underlying cause. If clicking continues after a reset, the fault needs to be diagnosed and repaired.
Fabric Softener Compartment Full of Water
Remove the dispenser drawer, check the small siphon tube and cap at the back of the fabric softener compartment, and clean thoroughly. Blockage with old softener residue is the most common cause. Test the siphon action under a running tap before refitting. If the siphon tube or cap is missing, the compartment cannot drain and a replacement part is needed.
When a wash cycle finishes and the fabric softener compartment is still full of water, it almost always points to one of three causes: a blocked siphon tube, a missing siphon cap, or a build-up of old fabric softener residue in the dispenser drawer. This guide explains how the compartment is supposed to work, how to diagnose which cause applies, and how to fix it.
How the Fabric Softener Compartment Is Supposed to Work
Understanding the mechanism makes the diagnosis straightforward. The fabric softener compartment uses a siphon principle rather than a valve or pump, which is why a small plastic tube and cap are so critical to its function.
Step 1: The machine floods the compartment
At the correct point in the wash cycle, the washing machine directs a flow of water into the fabric softener compartment. This water floods the compartment and forces the fabric softener out over the edges and down into the drum to be mixed into the rinse water.
Step 2: The siphon starts
As the compartment fills with water, the rising water level reaches the top of a small plastic tube at the back of the compartment. The water rises up this tube and spills over into the main drawer channel, starting a siphon action.
Step 3: The compartment drains itself
Once started, the siphon continues drawing water up through the tube and out into the main drawer until the compartment is empty. The small plastic cap or cover on top of the siphon tube is essential to this process, as it shapes the water flow in a way that maintains the siphon until the compartment is fully drained.
What you should see at the end of the cycle
The fabric softener compartment should be empty, or contain only a very small trace of water. If the compartment still contains water, the siphon action has either not started, or not completed, indicating a blockage, a missing component, or a fault with the water supply pressure.
What Causes the Compartment to Stay Full of Water
Blocked siphon tubeThe most common cause. Fabric softener builds up inside the siphon tube and its cap over time, eventually restricting or completely blocking the water flow needed to start the siphon. Thick or concentrated fabric softeners and using more than the recommended dose both accelerate this build-up. Cleaning the tube and cap thoroughly usually resolves this immediately.
Missing siphon cap or tubeIf the plastic cap on top of the siphon tube is missing, or if the tube itself is absent, the siphon action cannot start correctly. Caps can come off during cleaning if not refitted, and on some machines they are a separate removable piece that is easy to lose. Check whether the cap is present before cleaning.
Residue blocking the compartment baseConcentrated softener residue can build up on the floor of the compartment and around the base of the siphon tube, restricting water flow into the tube. This is often found alongside a blocked tube rather than as a standalone cause.
Stray water entering the compartmentOn some machines, deflected rinse water can enter the fabric softener compartment after the softener has already been dispensed. Small amounts of stray water collect but may not be enough to trigger the siphon, leaving the compartment partially full. See: fabric softener taken out too soon.
How to Diagnose and Fix the Problem
-
Remove the dispenser drawer. Pull the drawer out fully. On most machines there is a release tab or button that needs to be pressed to allow the drawer to come out past its normal stop. If you are not sure how to remove yours, read: how to remove the soap drawer.
-
Locate the siphon tube and cap. The siphon tube is the small plastic tube at the back of the fabric softener compartment. It usually has a cap or cover that sits on top, which is either integral or a separate removable piece. Check that both the tube and cap are present before doing anything else. If the cap is missing, that is the likely cause, and a replacement part is needed before any cleaning will resolve the problem.
-
Remove the cap and clean everything thoroughly. Take off the cap and remove the tube if it is removable. Wash the compartment, the tube, and the cap under hot running water, using a bottle brush or pipe cleaner to clear the inside of the tube if it is partially blocked. Fabric softener residue is sticky and may need soaking in warm water to dissolve fully. Clean the compartment floor and walls, and the channel that runs underneath to the main drawer body.
-
Test the siphon action before refitting. Hold the drawer under a running tap and allow water to fill the fabric softener compartment until it overflows into the main drawer area. Turn off the tap and hold the drawer level and steady. Watch the fabric softener compartment: the water should slowly siphon up through the tube and drain away over the next 20 to 30 seconds until the compartment is empty. If it drains, the siphon is working correctly. Refit the drawer and the problem should be resolved.
-
If the siphon test fails, check the tube and cap again. If water remains in the compartment after the test, the tube may still be partially blocked, or the cap may not be seating correctly. Re-clean and retest. If the tube and cap are visibly clear and correctly fitted but the siphon still does not work, the tube or cap may be damaged and need replacing. Search for your machine’s model number on our spare parts guide to find the correct replacement part.
-
Clean the drawer housing too. While the drawer is out, clean the housing in the machine that the drawer slides into. Mould, residue, and limescale build up in the housing channels over time and can contribute to blockage and poor water flow. A damp cloth or old toothbrush works well for the housing. Run the machine on a hot maintenance wash after refitting the clean drawer.
The tap test described in step 4 is reliable and takes less than a minute. It confirms the fix has worked before you run a full wash cycle.
If Cleaning Does Not Solve It
If the compartment is still full of water after thoroughly cleaning the tube and cap, and the siphon test works when tested under the tap, there may be a secondary cause to investigate.
On some machines, the angle at which rinse water enters the drawer housing can direct a small amount of water into the fabric softener compartment after the softener has already been dispensed. This stray water slowly collects but may not be enough in quantity to trigger the siphon. The compartment ends up partially full of clean water rather than soapy water. Read the full explanation: fabric softener taken out too soon.
Very high incoming water pressure can affect how the dispenser works, including the timing and force of water entering the softener compartment. If you suspect high pressure, try slightly reducing the flow on the washing machine tap and run a test cycle to see if the compartment drains fully. This is a less common cause but worth trying if cleaning has not resolved it and the machine otherwise works normally.
Preventing the Problem Recurring
Once you have cleaned the siphon tube and restored proper function, a few habits significantly reduce the chance of the problem returning.
-
Use the correct dose of fabric softener. Overfilling the compartment leaves residue that sticks to the tube and cap. Use the marked maximum fill line and do not exceed it. Concentrated softeners in particular should be used at the lower end of the recommended dose. -
Clean the dispenser drawer regularly. Remove and rinse the drawer every month or two to prevent residue build-up before it becomes a blockage. Pay particular attention to the siphon tube and cap each time. -
Consider diluting the fabric softener. Adding a small amount of water to the fabric softener before putting it in the compartment helps it flow more freely and reduces the likelihood of residue build-up in the tube. -
Run a maintenance wash periodically. A hot wash at 60°C or 90°C with no laundry and a washing machine cleaner flushes residue from the dispenser, drum, and hoses. Every one to three months is sufficient for most households.
Related Fabric Softener Faults
Fabric softener not being taken out at allThe compartment still contains fabric softener after the cycle, meaning the machine failed to flush it out. Different causes and fixes to the water-only scenario.
Fabric softener taken out too early in the cycleWhen fabric softener is dispensed at the wrong point in the programme, it rinses straight through without conditioning the laundry. Causes and solutions.
How to remove the soap dispenser drawerStep by step guide to removing the detergent drawer for cleaning, including how to release the drawer past the stop on machines with a press tab.
Do not use fabric softener on children’s sleepwearWhy fabric softener reduces the flame resistance of children’s nightwear and what to use instead to keep clothes soft safely.
Save on fabric softener when tumble dryingHow to reduce fabric softener usage when laundry is going straight into the tumble dryer after washing.
Need a repair or spare parts?
If cleaning the siphon has not resolved the problem, or if you need a replacement dispenser drawer, siphon cap, or other part, Whitegoods Help can point you in the right direction.
Frequently Asked Questions
Why is my fabric softener compartment full of water after the wash?
The most common cause is a blocked siphon tube in the fabric softener compartment. The compartment drains via a siphon mechanism rather than a valve, so any blockage from fabric softener residue will prevent it from emptying. Remove the dispenser drawer, clean the siphon tube and cap thoroughly, and test the siphon action under a running tap before refitting. A missing siphon cap is the second most common cause and results in the same symptom.
How do I clean the fabric softener compartment siphon?
Remove the dispenser drawer fully from the machine. Locate the small plastic tube and cap at the back of the fabric softener compartment. Remove the cap and clean the tube, cap, and compartment thoroughly under hot running water. Use a bottle brush or pipe cleaner inside the tube to clear any residue. Once clean, test the siphon by filling the compartment under a tap until it overflows, then turning the tap off and watching whether the compartment drains itself. If it does, the siphon is working correctly.
My siphon tube is clean but the compartment still fills with water. What else could it be?
If the tube and cap are clean and the siphon test works correctly under the tap, the most likely explanation is stray rinse water entering the compartment after the softener has been dispensed. This can happen when the water entering the drawer housing is deflected toward the softener compartment. Small amounts of water collect but may not be sufficient to trigger the siphon. Read our guide on fabric softener taken out too soon for a full explanation of this issue.
What is the plastic tube and cap in the fabric softener compartment for?
The small plastic tube and cap form the siphon mechanism that drains the fabric softener compartment after the softener has been dispensed. When the machine floods the compartment to flush out the softener, the rising water reaches the top of the tube, spills into the main drawer channel, and starts a siphon action that draws all remaining water out of the compartment. Without the cap, or with the tube blocked, this process does not work and water remains in the compartment.
The siphon cap on my fabric softener drawer is missing. Can I replace it?
Yes, but you need the exact replacement cap for your machine’s model. These small plastic parts are available through spare parts suppliers for most mainstream washing machine brands. You will need your machine’s exact model number to order the correct part. Search by model number on our spare parts guide. Searching for “dispenser drawer siphon cap” or “softener compartment cap” along with your model number will usually find the right part.
Is it normal to have a small amount of water in the fabric softener compartment?
A very small trace of water after the cycle is not unusual, as the siphon action does not always remove every last drop. However, a compartment that is substantially full of water after a completed cycle is not normal and indicates a blockage or missing component. If the softener itself has gone and only water remains, the softener function has worked but the siphon has not fully drained the compartment.
How often should I clean the fabric softener dispenser drawer?
Cleaning the drawer every one to two months prevents residue build-up from becoming a blockage. Pay particular attention to the siphon tube and cap each time. If you use concentrated fabric softener or regularly use more than the recommended dose, clean more frequently. Running a hot maintenance wash every month or two also helps clear residue from the dispenser housing and connecting channels inside the machine.