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I'm going to assume that the switch that's getting warm is the dimmer. Even when a dimmer is working correctly it gets warm and that's just the electronic parts of it. The face of a dimmer is actually a heat sink to help remove excess heat.

If you swap out the dimmer you will likely find your problem is resolved. Remember to de-energize the circuit by turning off the breaker before working on it.

If in any doubt, consult a qualified electrician.


Be aware that a dimmer for lights does NOT work for fans (though it may sometimes appear to work, you can end up with noise, problems such as the light attached to the fan not working, the dimmer getting overheated, etc). So even though it might seem to work at first, you'll have problems, and it's against code to put the wrong kind of dimmer there. You can purchase a dimmer which is rated for ceiling fans at Home Depot or Lowes, but they are more expensive than light switch dimmers.

Of course, if there is a single on/off switch at the wall which controls the fan and its light, then you might be better off buying a remote control unit to install in the fan - it will allow you to dim the fan and light separately (and safely). Or purchase a new fan with a remote... ceiling fans are cheap enough now that if yours is old enough, it might be a nice time for an update.

2015-07-15 19:10:25
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Q: If one switch controls a fan and a light but the dimmer part for the light does not work and the switch gets warm after a while what could be the problem?
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