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I have dimmer switch controlled ceiling fan. What happens is the dimmer switch seems to works for a few weeks. Then it doesn't behave like a dimmer, but only as a switch - meaning that the fan gets on only at the maximum position of the dimmer. If dimmer is even slightly lowered from the maximum position, the fan gets off. This happened to a previous dimmer also and I have changed to a new one - but still same problem. What could be the cause?

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It is better to switch over to the stepped switch type dimmer as the potentiometer( the control ) in these types wear off very easily.
So when the carbon track loses contact the varation of the resistance to feed the SCR does not happen but happens only att the contact point which is at the end.
So replace the potentiometer with the same type higher power rating or replace regulator with the STEPPED TYPE... which is also noise free.

Posted on Aug 30, 2010

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Tip- I read a lot of electrical part manuals, and when confused, I write out the instructions so it breaks down the information.

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