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Old 02-16-2011, 07:29 PM   #1
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Illuminated light switch causing a flash

Replaced two 3-way residential light switches with two illuminated ones that work one ceiling light fixture containing a compact fluorescent bulb. Now on occasion I get slight 'flash' from the bulb with all switches off and in the dark. Any idea what can be causing this? I then replaced the compact fluorescent with an incandescent bulb, and it no longer flashes. But If I switch back to a compact fluorescent bulb, the occasional flash returns. Any theories?


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Old 02-16-2011, 08:42 PM   #2
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The illuminated switches are not totally "off" when the switch is in the off position. That is how they are able to light the internal bulb with the switch in the off position. Apparently CFL's are more sensitive to this small flow of electricity and hence your flickering. You probably need to decide between the illuminated switches and incandescent bulbs or normal switches and CFL's.


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Old 02-16-2011, 09:04 PM   #3
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Lighted when off switches flow a tiny amount of current through the bulbs to light the switch. This tiny current makes CFLs flicker. One incandescent bulb on the circuit is usually enough to stop the flickering.

Last edited by joed; 02-17-2011 at 11:56 AM.
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Old 02-17-2011, 06:43 AM   #4
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Thank you for the response, and nice to know what causes the flash, but have gone back to the incandescent bulb.
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