Light flickers when exhaust fan turned on, same circuit?

Other Devices & Integrations Lighting & Load Control
1

I’ve installed a new pair of linear dimmers, and whenever I turn my bathroom exhaust fan on or off it causes the light to flicker momentarily. I’m assuming these are on the same circuit and maybe a way to stabilize the power is required?

Does anyone know of an easy solution to this problem, or if there is one?

2

Let me guess; the lights are LED bulbs? If so, the issue is the bulb’s sensitivity to current spikes, not the dimmer.

To resolve this issue, you’ll need to put something in the circuit to absorb and smooth the spikes like a resistor. Even a single incandescent bulb in the circuit will likely be enough to eliminate the flicker.

3

[quote=“Z-Waver, post:2, topic:181702”]Let me guess; the lights are LED bulbs? If so, the issue is the bulb’s sensitivity to current spikes, not the dimmer.

To resolve this issue, you’ll need to put something in the circuit to absorb and smooth the spikes like a resistor. Even a single incandescent bulb in the circuit will likely be enough to eliminate the flicker.[/quote]

Yup, you’ve got it: LED bulbs. I had heard many people were having trouble with them but I decided to try them out because of the energy savings. Do you know where I can find more information about wiring in a resistor? Which resistor, where to wire it, etc.?

Thanks

4

The simplest way is to install an (one) incandescent bulb in the circuit. The resistor solution is discussed many times in these forums as well as across the internet. Search LED dimmer flicker.

So far, the only “preconfigured” resistor solution that I know about is the Fibaro FGB001. But, if you can solder, a DIY version should not be difficult.

5

[quote=“Z-Waver, post:4, topic:181702”]The simplest way is to install an (one) incandescent bulb in the circuit. The resistor solution is discussed many times in these forums as well as across the internet. Search LED dimmer flicker.

So far, the only “preconfigured” resistor solution that I know about is the Fibaro FGB001. But, if you can solder, a DIY version should not be difficult.[/quote]

Thanks for the suggestions!