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Zanussi TC485W condenser tumble drier trips fuse when switched on

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If your dryer has been fine for sometime and then failed you probably need tech service for a replacement element or motor. Or should you feel qualified, run down the power to your drier including your ground. Your ground wire should NOT be connected to a water pipe. It must be directly connected to your main circuit panel. Then do this. Check for a high load on your motor. If you don't have any then it is shorted in the wiring. That are all the major working parts to your dryer or any dryer. The timers wouldn't cause this.

When a dryer element is carrying a proper load the circuit physics are correct, when the burn out it acts like a direct short and will pop your breaker or will not dry at all. The same is true for your motor. The wiring inside the motor can overheat and the varnish on the wiring wrappings can melt and short.


Posted on Jun 15, 2008

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I had the same problem when I moved into my new house and upgraded the dryer. Its most likely the ground wire. Best to get a multimeter and test everything. If your not able to do that. You should call an electrician and have him check the wiring. Where he may need to run a new ground to your fuse box.

Posted on Jun 15, 2008

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  • Nathan Ayers
    Nathan Ayers Jun 15, 2008

    In these models of dryers its likely to happen more being that there condenser style. Which means the drying circuit is starting up and trying to build the energy it needs. It then ends up tripping the fuse if its not grounded properly. Thats in the period where it makes a humming noise before it starts. This can be cause by the outlet itself just needing to be rewired and checked to make sure its good. Or as it was in my case a whole new ground wire was needed cause the wiring was too old.

    hopes this helps answer your problem, Thanks -Nate

  • Nathan Ayers
    Nathan Ayers Jun 15, 2008

    Step 1. Make sure It has power.

    Step 2. Check to make sure the motor doesn't move. Or that other things
    do or dont work, Make Sure the fault is not with the timer line switch or the
    door lock switch.

    Step 3. Check the power to the speed control board (pins 3, 4 and 5) is good.

    Step 4. Make sure the voltages for the powerboard on pins 2, 4, and 8 are 120VAC as required. The
    voltage on pin 1 and 3 will be the same as pin 10. If you were to put a small load on it, it
    would be the required zero volts. if not unit is bad

    Step 5. Check and make sure the fuse is good.

    Step 6. Make sure resistances between pins 1 and 2, 2 and 3, 1 and 3 of the speed control board are 3 Mohms +/- as required.

    Step 7. Check to ensure Motor winding resistances are OK.

    this should help you get on to fixing it.

    THANKS, Nate

  • Nathan Ayers
    Nathan Ayers Jun 15, 2008

    Most of the steps I listed above can be done with a mulitmeter. If you find you are unable to do it. Its best to get a technician out to help you service the unit. Give you a idea maybe of it needs something replace and if its worth it, or if its better to replace the unit itself.

    But it sounds to me that if you just put it in and its having the problem. its the ground wire. But you can perform everything I said to test the unit itself.

  • Nathan Ayers
    Nathan Ayers Jun 16, 2008

    let me know if you need anymore help with any of the tips ive given you. Should you choose to do it yourself. If Not Thank You and its been a pleasure assisting you, Nate

    as always thanks for using FixYa



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