Siemens WT21000GB/01 GB – think its the thermostat ?

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  • October 12, 2019 at 6:20 pm #96529
    Raymo99
    Participant

    Hello Forum,
    I have a WT21000GB/01 siemens, a fairly basic model but with little use.

    The drum turns and air blows but heat is not getting above about 25 degrees or so on either of its two heat settings.
    The heater elements read about 25 Ohms, so these seem ok.
    I measured the thermostat and it reads less than 1 ohm, but that was at room temperature.

    Can it still be a faulty stat, tripping when it gets slightly warm?

    Is it a mad idea to short the stat out just for a short test? see it the machine heats?

    Thanks
    Ray

    October 12, 2019 at 6:56 pm #463719
    electrofix
    Moderator

    this dryer is actually made by White knight crosslee in Yorkshire so it makes parts cheap and easy

    there is a stat on the exhaust of the dryer. if you lay dryer on its face and take lower back off the stat it just to the right of the motor at the front

    https://shop.ukwhitegoods.co.uk/tumble-drier-exhaust-thermostat

    I would change that one and see how it goes

    Dave

    October 12, 2019 at 8:39 pm #463720
    Raymo99
    Participant

    Yes I saw that one, just to the right of the motor.
    I must say, it’s a difficult machine to dismantle, the drum is attached to the upper back-plate, which in turn is keeping the lower plate in place..
    I has a bit of a struggle to get access, but got there eventually.

    Thanks for the advice and link, I shall order one up tonight.

    Ray

    October 12, 2019 at 10:13 pm #463721
    electrofix
    Moderator

    leave upper plate on. remove screws from lower plate and the bottom 2 only from the top plate
    lower plate slides up then off

    really easy when you look at it
    its one of the easiest dryers to work on, you should see the rest

    Dave

    October 13, 2019 at 10:38 am #463722
    Raymo99
    Participant

    Great stuff Dave, you seem to know this one well!
    I shall do that when the part arrives, it will save me a lot of time.

    PS. the machine also is making a squeak sound when the drum is turning.
    When I have it open next time, is there something I should grease or oil?


    Many thanks.

    Ray

    October 13, 2019 at 11:04 am #463723
    electrofix
    Moderator

    there is nothing really to oil as all bearings are plastic

    Dave

    October 13, 2019 at 12:51 pm #463724
    iadom
    Moderator

    🙂 I well remember going to a Bosch tumble dryer (same as Siemens) some years ago. A large house and kitchen with washer,dishwasher, oven and fridge all also Bosch appliances. The lady of the house rather haughtily informed me that she only buys German equipment as it is the best there is. The look on her face when I informed her that her ‘Bosch’ dryer was made just up the road in Huddersfield by Crosslee,..priceless.:D

    October 26, 2019 at 4:22 pm #463725
    Raymo99
    Participant

    Success !.
    the replacement thermostat fixed it.

    Thanks a million Dave & co.

    This machine has had daily use since 1999 and this was the first fault… Not too shabby for unit made in Huddersfield.
    Quite a low MTBF.

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