Hoover 1100 Water Level Sensor
My friends hoover washer dryer 1100 wont stop filling up when on a fill cycle, she has been told by a friend who had the same problem (and called out an engineer) that the water sensor needed cleaning. She also told her its not a difficult diy job. The problem is she doesn't know what she's looking for, has no manual. So to stop her tearing her hair out could you please help
Solution Summary
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This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Hoover 1100 overfilling on fill cycle traced to pressure chamber blockage
- The problem
- A Hoover washer dryer 1100 would not stop filling during the fill cycle. The owner had been told the water level sensing system might need cleaning but did not know which part to check.
- Likely cause
- Most strongly supported cause was a blocked pressure chamber bottle in the pressure system. The accepted reply also noted that an air leak on the small tube between the pressure switch and pressure chamber can cause overfilling, but this was not reported as found.
- What fixed it
- The accepted advice was to inspect the pressure system under the lid: the round pressure switch, its small plastic tube, and the pressure chamber bottle. The original poster later confirmed they found sludge in the pressure chamber bottle, washed it out and refitted it. They were also advised to ensure the tube was tight when refitting.
- Checks to try
- Located the pressure chamber bottle
- Found sludge in the pressure chamber bottle
- Cleaned and refitted the pressure chamber bottle
- Observed that it stopped filling correctly on a small wash after cleaning
- Parts or tools mentioned
- Pressure switch
- Plastic tube to pressure chamber bottle
- Pressure chamber bottle
Safety: Never remove the lid or back without fully disconnecting the washing machine from the electrical supply. Further diagnosis should be carried out by a suitably qualified appliance engineer.
3 Answers
Never take the lid (or back) off a washing machine without ensuring it is totally disconnected from the electric supply.
At the top of the washing machine under the lid is a small round pressure switch with a handfull of wires. At the base of the pressure switch is a small plastic tube which runs down into the washing machine to a pressure chamber bottle. This pressure chamber can get blocked.
Note that this pressure system controls the water levels in the washing machine, so if you get an air leak where the tube fits onto the pressure chamber bottle the machine will start to over fill. Make sure it's tight when refitting. (If not I usually cut off several millimetres to get fresh tubing)
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We found the pressure chamber bottle with a bit of sludge in it. We washed it out and replaced it. It stops filling on a small wash but she daren't risk it on a full cycle. Thanks for the advice as always you're the best
Cheers :-)
It should be OK now. Test on a full wash with no clothes in and just keep a close eye on it. The worst that could happen is you see the water level go above halfway up the door glass and when if gets to the top you'd need to turn the washing machine off and put it onto spin to drain the water.
If it completes a full wash and the water never goes above halfway up the door glass then it's cured. Just keep an eye on it during the next 2 or 3 washes.
Related extra information - How does a washing machine control water levels?
Here's how a washing machine controls the water levels.
How washing machine controls water levels
Related:
Out of balance loads in modern washing machines
Quoted from Washing machine won't spin or drum won't go round
"Many modern washing machines have electronic out of balance detection. If your washing machine reached the end of the cycle and turned off without doing a fast spin. There is a possibility that the load was out of balance. If you suspect this could be the problem, make sure it wasn't just a bad load by trying it again with another load, or open the door and redistribute the clothes before trying again. You could try taking the washing out and putting the washing machine back onto a spin program. If it seems to spin OK now, it could be that the load was not balanced properly. Before calling an engineer out, if the drum turns OK on wash but it just won't do a fast spin, make sure it isn't just an awkward load that the washing machine is refusing to spin".
Finally A blocked pressure chamber can also cause overfilling. This can happen if instead of the air pressure jamming the pressure switch ON, water can't get passed the blockage to enter the pressure chamber in the first place so it never activates the pressure switch at all. This will cause the washing machine to overfill.
(Related: Washing machine is overfilling | Common faults on pressure system)
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