What is an aqua stop hose and do you have to use it?
The words aqua, and stop, are used by a variety of companies covering different products. They all try to “stop” damage from leaking water in various situations. So-called “aqua stop” systems in appliances can combine more than one leak detection system including float switch detectors in the base of the appliance.
However, this article deals with questions about the actual aqua stop fill hose supplied with several brands of washing machines and dishwashers (including AEG, Neff, Bosch & Siemens).
How does the Aqua-stop hose work?
It’s a hose within a hose. The outer hose is made of corrugated plastic designed to contain any water if the inner hose leaks. There is also a plastic housing at the end where it connects to the water tap.
If the inner hose ever leaks, then a device inside this housing is able to detect the incident and prevent further water getting into it. If this happens, the hose will no longer let any water through to the appliance and will commonly indicate it has “tripped” via a red dot in a small window in the housing.
If this happens the hose is now useless and cannot be repaired.
Problems associated with the aqua-stop hose
1: Their bulk and relative inflexibility can make them difficult to use depending on the set-up and plumbing
2: They can’t be extended if they are too short. (You can still connect one to a normal hose but that would of course introduce a normal unprotected hose partially defeating the point of using an aqua stop hose)
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3: The size of the bulky plastic housing at the end connecting to the water tap is especially difficult to accommodate for many people (especially with taps fitted under the sink) where there may not be room for it. So in many situations it can be impossible to connect this hose to existing plumbing
4: Many people’s taps point out horizontally and some of these hoses should only be fitted pointing down as shown in the photo below. Check your instruction manual for fitting instructions)

This photo was sent to me by Mark. He had to fit a new cold tap with a 90 degree angle pointing down to accommodate the aqua-stop hose.
His original tap had extended horizontally like the (no longer required) hot tap behind it. Before changing the tap there was no room to connect the new aqua stop hose.
This demonstrates the type of problem many people have when confronted with these larger bulky hoses with specific fitting instructions as described in the main article on the left.
Can you replace an aqua stop hose with a normal fill hose?
Many aqua stop hoses do nothing different except protect against leaks from itself with a mechanical stop mechanism activated by leaking water inside the hose.
You can usually replace them with a normal fill hose if you are prepared to remove this flood protection.
However, some aqua stop hoses actually have an electrical solenoid inside them, with wires running through the hose from the washing machine. In this case the aqua stop hose acts like a remote fill valve which would be missing in a normal hose.
If the washing machine also has a regular fill solenoid with power running to it, and the aqua stop hose just piggy backs of its electrical power being energised when the main valve is energised, then a normal hose should still work OK.
I’ve seen cases where some manufacturers bizarrely threaten to void your guarantee if you don’t use their hose. This makes no sense at all.
The hose protects only against the fill hose bursting or corroding, which is in fact a pretty rare event these days anyway. No one would dispute they have every right to refuse any repairs to the replacement hose you have used instead, and if by any freak chance the split hose sprayed water onto the appliance and caused damage they have no need to fix that either – but it’s not really on to refuse to repair a faulty motor or any other fault on the washing machine unrelated to the fill hose.
Having said that, all guarantees are in addition to our statutory rights, and in law, no one has to provide any guarantee whatsoever. Our rights extend only to the Sale of Goods Act. The only reason they give any guarantee is because everyone does, and it’s an important – nay essential – sales tool. No one is likely to buy any appliance with no guarantee. But as it is an addition they are able to try to impose certain restrictions. If we think the restrictions are unreasonable or restrict our “statutory rights” then we can challenge them, and if necessary seek consumer advice or take them to the small claims court.
It’s hard to imagine a manufacturer seriously trying to convince a customer with a 3 month old washing machine that they must pay £200 or more to have a new motor fitted simply because the washing machine is connected by a normal fill hose instead of their aqua stop hose, how ridiculous.
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Comments transferred
This article was originally published on Washerhelp.co.uk and had attracted some comments which you may find very useful to read. Therefore the first dozen or so comments under this article are the comments I’ve transferred across.
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(Comment transferred from original article on Washerhelp)
14th March 2013 12:02:20 PM –
Hello Patrice: If the washing machine is making a buzzing noise when it’s trying to fill with water that sounds like it is energising the water valve but no water is coming through the valve. It might be the water valve which is buzzing. If so, it sounds like when you put the new hose on and water flows through it properly the washer should work OK.
My aquastop hose shows the red dot in the indicator, and does not let any water come out. Even if i connect it direct to the tap. How can this be repaired ?…Is this covered under guarantee for the hose.
Rahul. if the red dot is showing then the hose is useless and unrepairable. If the washing machine is under guarantee it should be covered.
Hi
We have an eight-month-old AEG washer drier (L75480WD) with an Aqua Control device hose. Like Richard a few posts above our pipework has been fitted to a vertical source pipe, water coming up. Last week the kitchen flooded and the fault seems to lie with this hose (the little metal mesh filter has actually rusted / rotted through!). We’ve been speaking to AEG and they are sending someone out on Weds, (today is Monday) but doing a little research on the net brought us to this site where you seem to advocate the hose pointing downwards rather than up like ours.
The instructions make absolutely no mention of essential direction fitting, although the images do show downward fitting.
Info is hard to come by. Surely if it was essential to be fitted a certain way round the manufacturer would actually say so?
Yes if essential it should be made clear. I’ve definitely seen instructions on some that said they should point down but if there’s nothing like that in the instructions they can’t really say anything.
That’s what we think too – fingers crossed they agree!
Hi Andy
You appear to be the only credible source of knowledge on the aquastop issues, so hopefully you can help. I have a Miele G2670SCVI with a knackered aquastop hose. I have removed the hose and disconnected the electrical connector. Do you know if this Miele model has a regular solenoid inside the machine (meaning I can replace the aquastop hose with a standard one)? Or am I faced with an expensive parts purchase??
Jamie T
Hi Jamie. The electrical connector clearly shows there is a solenoid inside the Aqua stop device which is activated from the washing machine. The hose however still has to screw onto a water valve. It’s just whether or not this is a normal valve and the Aqua stop device piggybacks off of it or if it is just a connecting valve with no actual solenoid. You will need to remove the lead to check. If it is a normal valve it will have a solenoid with two connectors and maybe the Aqua stop device just takes its power from when this valve is energised. If this is the case an normal hose should still work.
However, if this was the case then the solenoid would potentially burnout if activated at the same time as the Aqua hose if the Aqua hose valve wasn’t letting any water flow to it.
Some great advice here thank you. I have an AEG Dishwasher 40860. There is no water coming in and a code comes up saying i10. I checked in the manual and it says it is the hose filter and to clean it out. I disconnected the hose and took out the plastic mesh and then the other plastic and rubber stop. How do I clean the rest of the hose filter as you can’t seem to take it off the hose to clean it. Any advice on how to clean it?
Hi Ryan. If it says to check the inlet filter, it isn’t getting any water into the machine, but that could be caused by other problems including there being no water coming into the hose. Presumably it’s saying check he filter but if it was blocked it would be very obvious. It sounds like it isn’t blocked. I would check all the things in this article looking at the basic causes of no water getting into the machine – https://www.whitegoodshelp.co.uk/washing-machine-wont-fill-with-water/