Miele W1 WKH132 WPS PWash2.0&TDos XL Questions & Answers

Hi Anna, seeking feedback from other consumers at this stage as service support unable to resolved original issue.

the temperature of the water has to do with getting bad smells too. in Australia there is a very old school mentality where everything is washed in cold water to avoid shrinkage, if youre able to wash the clothes on either a cottons or powerwash cycle, or any cycle that doesn't have the handwash symbol, then they can take a warmer temperature. id recommend 40 degree washes for pretty much anything that isn't a dekicate item. 40 degrees is barely warm and wont damage clothes but warm enough to eliminate unwanted smells. think about having a shower in cold water only forever and that's how youre washing your clothes.
other alternative is that you may need to adjust the dosage of your twindos, and give the machine a descale and a clean on 90 degrees at least once a month as gunk tends to collect in the pipework and around the drum in places you cant see. hope that helps a bit;

Thanks for that Anna, it's a shame that Miele don't offer the canisters for free then if you have no choice but to use them to stop the warning. I have just outlaid another $70 on empty canister to push water through the pipes I don't use to avoid this warning from coming up every time I wash.

I don't have TwinDos but i think you do need to run a hot wash at least 60 degrees every now and again so the Hygiene info won't appear Its basically telling you to run a hot cycle to make sure the pipes and any liquid detergent buildup in the pipes are washed away.

What about a universal washing machine cleaner?

An update. Officials said metal tapping noise is normal but offered to install some springs patch. Plus replaced bearings. Unfortunately it didn't solve the issue: https://youtu.be/ME72FmLCyVk

I finally got the formula from the service. Maybe someone is interested.

Will Be Dispensed = Dosing * ColorFactor * SoilingFactor * WeightFactor * FactorDUO-WM
Dosing - what is set in the settings menu
ColorFactor: 0.8 for phase 1 always, 0.53 for phase2 if color clothes selected, 1.07 if white selected.
Soiling factor: 0.7 (low), 1 (normal), 1.2 (high)
Weight factor: 0.45 +0 (if load is 0-2), +0.2 (load 2-4), +0.4 (load 4-6), +0.55 (load 6+)
FactorDUO-WM: this is some constant = 1.28

NOTICE: weight factor is minimum 0.45 even for zero load. 1.0 - for max load.

Example: If you load about 3-4kg, using twindos with phase1,2, program cotton, soiling low, color clothes, dosing settings: 48/36
there should be dispensed
phase1: 48*0.8*0.7*(0.45+0.2)*1.28 = 22.4 (ml) (it is 46% from maximum dose for 30-40% load)
phase2: 36*0.53*0.7*(0.45+0.2)*128 = 12.7 (ml)

If you load about 1kg, using twindos with phase1,2, program cotton, soiling low, white clothes, dosing settings: 48/36
there should be dispensed
phase1: 48*0.8*0.7*(0.45 + 0)*1.28 = 15.5 (ml) (it is 32% from maximum dose for 11% load)
phase2: 36*1.07*0.7*(0.45 + 0)*1.28 = 15.5 (ml)

Other programs, like QuickPower, Express 20, Shirts (which is for 1-2kg program) which are made for lower loads takes about 50%-60% more detergents than by formula, even for low soiling which causes overdosing and overfoaming.

I don't know why is that designed this way - but it definately software issue. Maybe it is a bug. I don't know.
I've written a lot to Miele to explain but they ignore me.
No one will use 20mins program to wash something heavy - so why the machine use so much detergent in this mode - i don't know

Also advertising says - it takes as much detergents as needed, but no info how much is needed ))
And for this price machine does not measure dry load. Only calculates water absorbtion.
So it's very inaccurate in weight detection. which means it can't accurately dose detergents.

On practice you can't wash any load with twindos.
You need experimentally setup dosing of detergents which will be ok for some amount of clothes which you wash most of the time, like 3-4kg.

If you want to refresh only several t-shirts - just dont use twindos.

If you'll setup it for low loads - it'll underdose high loads.
If you'll setup it for high loads - it'll overdose low loads.

There is one solution to use twindos for all loads. Buy two universal containers. Setup one with big dose, second with small one. Use same detergent at both containers. When you turn twindos on, machine asks what container to use ))))

As I discovered - it's working this way by software design.

I've finally got some document with formula from service. But this formula is for 8kg washers with twindos. Mine is 9kg washer.
Anyway - according to that this machine recognises the load with about 25% step and has 4 load levels.
For example if you load zero or 2kg - it is same first load level. This level is then used at formula which calculates how much phase1,2 to dispense.

Question for Miele Officials:
Here is the manual for this appliance.
https://www.winningappliances.com.au/public/manuals/Miele-WKH132WPS-9kg-W1-Front-Load-Washing-Machine-User-Manual.pdf

It is said there that:
- Water consumption and energy usage are determined by the size of the load.
- When smaller amounts of laundry are washed, the automatic load recognition system will reduce the amount of water and energy used.
- The washing machine has fully electronic controls with automatic load recognition. It takes in the right amount of water required for the programme depending on the amount of laundry and its absorbency rate.

If Miele says "Hi Serhiy, thank you for your question. The machine doesn't actually measure the weight of clothes at all."
Does it means that company LIES to its customers ?
Or what actually means " the automatic load recognition system "

And why in service menu in this appliance there is "calibrate load sensor" option which asks to put 5 kilos in the drum? (which in my case says - sensor is broken, after calibration)

What do you have the phase 1 and phase 2 set at? The machine has them set at 48ml and 36ml respectively. This should sufficient for the water hardness here in Australia, unless you leave in a higher water hardness area. You can also increase rinse effectiveness by going into the settings menu and selecting max rinse level.

An update:

I live in the area with very hard water.
Had 48/36 setup. Used maximum water level for rinsing in settings. It didn't help.
Then I measured how much detergent it actually use. Even with empty drum it used about 30 phase1 and 15 phase 2 grams (twindos color mode, express20 program).
And In express20 program there is only 1 rinsing cycle so I should dispense very little. User manual says this mode is only for low portions of clothes only.

I was wondering how much actually grams the machine should dispense and what is the precision of load measuring. Didn't find this info yet :)
For example if settings has 48 ml per 9 kilo for dirty clothes (I suspect)
It means 48/9 = 5ml per 1 kilo. Then why this machine takes 25-30? ))

I suspected it just doesn't measure actual load or dosing motor adds much more which was less probable, but no errors on display.
So I called a service guy. He connected his laptop the to the appliance through optical interface (front panel) and we were able to see all sensor values in real time while machine is working. It was noticed that actual load size was always zero.
Then the guy entered service menu and there was load sensor calibration option.
Machine asked to place 5kilo in the drum. After guy loaded the drum with 5 kilo, machine showed a message - sensor defect

Hope the appliance will be replaced :)