Tangential Fan

Viewing 9 posts - 1 through 9 (of 9 total)
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  • #88184
    Breadsnapper
    Participant

    The cooling fan on my Smeg suk61mfx doesn’t switch off. As soon ss power goes to the cooker the fan starts. Fan is new so I wouldn’t have thought it was that. Is there a sensor somewhere?
    Cheers.

    #437282
    kwatt
    Keymaster

    Re: Tangential Fan

    Yes, there is a fan initiation thermostat that kicks it on when the temperature rises far enough and cuts it when it cools down enough.

    Looks like a small button stat, there’s two on the back one being that and the other a thermal protection one.

    K.

    #437283
    Breadsnapper
    Participant

    Re: Tangential Fan

    So a faulty stat will cause the fan to continua run? Are the polar specific by chance?

    #437284
    kwatt
    Keymaster

    Re: Tangential Fan

    Possibly but more likely not to engage it.

    Usually if that happens it’s something to do with the switch.

    K.

    #437285
    Breadsnapper
    Participant

    Re: Tangential Fan

    Ok this is becoming a pain. So far I have fitted a new tangential fan. When the cooker is switched on at the mains the fan starts. No matter how long I leave it the thing continues to run. The fan control sensor which is located with 2 screws on the back of some ducting. If I disconnect to 2 blue wires connected to it then the fan doesn’t run. I have also discovered that the round fan oven element is not working. I have ordered a new element and fan sensor. Would I need to replace the other thermostat sensor too or is that just for oven temp?

    #437286
    kwatt
    Keymaster

    Re: Tangential Fan

    It sounds to me as if you’re playing a game we call “Parts Bingo”.

    Blindly replacing parts is not a good idea at all and, as I’m sure you’ve found, can prove costly.

    The fan is getting a constant feed due to some sort of wiring error or a a faulty switch and that is very possibly the issue with the fan element not powering up, which I am thinking you’ve not tested. So it is all too possible that the parts you’ve ordered will most probably not cure the problem that you have and are almost certainly not required.

    Per the other thread, as I don’t have a clue what switch you’ve been supplied, if it’s correct or what version, there’s not way for me to tell you much more I’m afraid.

    K.

    #437287
    Breadsnapper
    Participant

    Re: Tangential Fan

    The fan was replaced as it wasn’t working because the plastic housing for the spade connector had broken which in turn had broken the wire on the coil and wasn’t fixable. The element is being replaced as when I took it out to inspect it there was a split in it.
    It seems that some sensor or other thinks the oven is hot even when it is cold.

    #437288
    PaulG
    Participant

    Re: Tangential Fan

    Just a tip regarding the copper coil wire breaking. If it’s broken at the spade, you can unwind the wire by one loop, scrape off the insulation at the end of the wire, then solder it back on the spade.

    #437289
    kwatt
    Keymaster

    Re: Tangential Fan

    The “sensor” is the fan initiation stat I told you about.

    It closes when the oven heats up, brings the fan on. Opens when it cools off, shuts the fan off. That’s it.

    K.

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