Siemens Combi M/wave HB86K581B cuts out after 3 seconds

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  • March 27, 2014 at 4:08 pm #80126
    davidelliot
    Participant

    Hi
    A customer has got a Siemens HB86K581B combination oven / grill / microwave oven.

    The grill and oven functions work absolutely fine – but whenever a microwave function is selected, either on its own or a combination of grill or oven and microwave the countdown timer starts and then 3 seconds into the cooking the timer resets itself.

    I’ve tried disconnecting the microwave power board, thus having no load on the microwave circuit but it still cuts out after 3 seconds.

    Any ideas anyone? 😕

    Cheers, Dave

    March 28, 2014 at 12:42 am #411752
    PlanB
    Participant

    Re: Siemens Combi M/wave HB86K581B cuts out after 3 seconds

    Panasonic derivative, no power from pcb to inverter i suspect

    March 28, 2014 at 7:42 am #411753
    nomadPaul
    Participant

    Re: Siemens Combi M/wave HB86K581B cuts out after 3 seconds

    Normally it’s an inverter failure but also check safety fuse and door switches operation.

    March 28, 2014 at 8:08 am #411754
    davidelliot
    Participant

    Re: Siemens Combi M/wave HB86K581B cuts out after 3 seconds

    Thank you PlanB and nomadPaul, I’ll take a look in those directions.
    Dave.

    March 29, 2014 at 10:17 pm #411755
    eastlmark
    Moderator

    Re: Siemens Combi M/wave HB86K581B cuts out after 3 seconds

    usually and invertor and mag to be safe.

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