Question about Eureka 1810 Central System Vacuum

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Continuous running My Eureka Central Vac will not turn off. I have to unplug it.

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  • Nicoh Mar 06, 2008

    So how do I fix a bad relay?

  • Anonymous Mar 28, 2014

    Vac is brand new. Charged the battery for 48 hours, but the vac will run for only a minute or less before battery runs down. Loses power within about 30 seconds.

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  • Master
  • 1,673 Answers

Central vacs have relays in them, some stand alone, others mount on a circuit board. A stuck relay causes this type of problem. At the unit disconnect the low voltage wires, plug in your unit, does it still come on, if it does then you have a bad relay. If it doesn't then you have a problem somewhere in your low voltage wiring. One of the outlets, the wires may be touching or there is a staple casuing a short.

Posted on Mar 06, 2008

  • Lauren Junge
    Lauren Junge Mar 06, 2008

    If the relay is bad, you will have to replace it.

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If I understand when you unplug from the power source ,then plug back in the green LED comes on, looking normal ? But when you manually activate the switch on the motor housing of the vac itself the vac does not start and the LED goes out, so no green or red LED at that point?
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If the unit is relay controlled, there is always the possibility that when the unit was turned on, the relay contacts welded themselves shut making the power button ineffective.

If you're familiar with relay pinouts, with the unit unplugged, verify the contact closures with an ohmmeter or continuity checker. With the unit unplugged, the relay contacts should be in their "normal" state (probably open).

Try gently tapping the relays to see if it can be freed that way. If that works, there's nothing stopping them from welding themselves together again. The relay may need replacement.

Cheers.

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