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Fibaro FGS-221 Double On/Off relays

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    Fibaro FGS-221 Double On/Off relays

    I have a few Fibaro FGS-221 double On/Off Switches where either relay will stick in the on position maybe once every 2 months. The only way to clear the fault is to give the unit a tap on the side.

    Has anyone else seen this or have I got a bad batch?
    Jon


    #2
    I have a few and not seen this. Personally I'd contact Fibaro. That is potentially dangerous


    Sent from my iPhone using Tapatalk

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      #3
      Just an update on this, I found that this problem had also been reported on other HA forums. It would appear that the relay contacts are made of a soft metal and using certain loads will stick together due to contact arching. The solution is to install contact suppressors (snubber - resistor and capacitor in series) across the normally open contacts.
      Jon

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