Wiring – Lights dim on a switch that was a 3 way

ceiling-fanledold-housewiring

I have a Harbor Breeze ceiling fan with 4 lights in my kitchen that dims after I turn it on.

The house is over 100 years old and has been through multiple remodels. It appears as though that the kitchen light was originally a 3 way, as when I tried to replace what I thought was a faulty light switch, I was greeted with a 3 way switch. I have no idea where the other 3 way switch is located. I have manipulated all of the switches in the house and this 3 way switch has no sibling.

When I moved in, the kitchen light came to full brightness. I replaced the 40w incandescent bulbs with LEDs (one of the original bulbs was missing). The first day after the replacement, the lights came to full brightness. Over time, they are dimmer and dimmer when I turn the light on. If I smash the switch on, they come to full illumination, only to dim.

What am I doing wrong?

Best Answer

Significant change to the original problem: The lighting dimmed because the current regulator in the fan burned (or was burning) up. I took it apart and found significant charring and plastic deformation inside.

I bought a similar model from ReStore and Frankensteined the two together into one working fan.

The three way switch had no impact on the fault as should have been noticed since the observed fan speeds only slowed when the light was turned on.

Thank you to those who read my problem and tried to help me solve it.