But you are describing a three way switch and the other one was used to turn the light on or off which reversed the function of the one you usually use. A wire getting loose in a terminal screw or in a wire connector at the switch or light fixture could cause the flicker.
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Light switch turns on in off position. It is natural for a dimmer switch to generate some heat that can be felt when you operate the switch normally youll feel it when you turn it off. The problem switch is on the left handside dining room switch mid left for the new fitting that works hall light is mid right switch and upstairs landing light righthandside the landing light is two way with. The light stays on all the time so i. When i turn it to the on position the lights go off and the circuit breaker trips. Take off the cover plate. When the light goes on youve found the wire that needs to be on the lower terminal instead of the top one.
If it is a single pole and not a decora style it should have on and off printed on it and would be impossible to reverse the function. Mostly likely problem is the switch either bad contacts in the switch itself or my bet it was wired backstab fashion the wires are inserted into holes in the back of the switchreceptacle. Then turn the breaker off that controls that light. Light switch only turns off in middle position if the switch is just plain worn out the toggle may disconnect the circuit only when its in the middle position. One thing i probably should of mentioned is that the switch is part of a block of 4 with the other switches the right way round. Confirm that the light is off.
Lutron maestro switches and dimmers are set up this way. This can be caused by different events. This occurs because a dimmer operates by dissipating some of the heat of the full current flow in order to dim the illumination of the light fixture. A third problem that might be blamed on the light switch can actually caused by the light fixture itself. The light switch doesnt turn the light off and on. Turn the light on first.
Look at the switch. They turn the light to the off position but in fact there is still a current going through the switch. There is a small tab on the face called the fass which is required by code to physically disconnect power for changing light bulbs installing a fixtures etc. I am a bit anal about safety so take a meter and confirm that. When i turned the power back on the light came on but i had the light switch in the off position. The other light switch just turns off on the on position and on on the off position but the breaker does not trip.
When i turn the light switch at the end of a gfi line to the off position switch is labeled offon the lights turn on. You might notice this type of issue if the light bulb flickers while turned on.