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T600WV dimmer fails when a 25 watt bulb in a fixture burns out

This fixture has six 25 watt candelabre bulbs. When one of them burns out, the dimmer fails and all that is left is an on- off function. This has happened on four different occasions. Each time I have had to replace the dimmer with a new one. Is there anything I can do to keep the dimmer from going bad when an individual bulb fails?

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  • wth_gera Nov 21, 2008

    The ground wire is continuous from source to dimmer and fixture. Thanks for trying.

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I have had my fair share of this happening. Light dimmers use a solid state semiconductor piece of electronics called a "Triac". The Triac works by switching on and off about 120 times per second so the lightbulbs will be receiving a pulsating voltage. Lowering the knob makes the off time longer so the lights dim. What can happen is the Triac is faily sensitive to current spikes that blowing bulbs can cause the Triac to fail. Triacs often fail closed so that it will not dim the lights any more. The manufacturer can better protect the triac from spikes, but they don't to cut costs. They work most of the time for a while until a blowing bulb takes it out. I am just attributing it to cheapness, and I have had good luck with the box stores and manufacturers giving me a replacement. Please do try and get refund/replacement.

Posted on Mar 06, 2009

  • BoomerP Oct 13, 2010

    One suggestion, get a dimmer with a higher-wattage rating. The electronics will be rated for higher current levels, which also means their peak-current-carrying capacity will be significantly higher.

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You don't have a ground (bare) wire hooked up at the fixture and it need to be hooked up at the dimmer as well

Posted on Nov 21, 2008

  • BoomerP Oct 13, 2010

    The ground wire has absolutely zero to do with this issue.

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I avoid using a standard light bulb or PAR type bulbs in any recessed can fixtures as they tend to heat up quite a bit and cause the thermal protection to trip frequently.

As a Master Electrician that has installed literally thousands of recessed fixtures and dimmers, I can say that my customers prefer the Halogen light over standard bulbs and they last longer too.

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