ZigBee and Wi-Fi signals can operate on overlapping channels. Zigbee runs on the 2.4 GHz radio band, the same as WiFi. So if there is some sort of connection issue, you could see the red failure light on your dimmer switch if it’s unable to ‘speak to’ the bulbs. Related Reading: How To Dim Philips Hue Lights Without A Dimmer Switch Solution #3: Check the Zigbee (Hub/Bulb) ConnectionĪs mentioned earlier, the dimmer switch sends messages over Zigbee to control the linked smart bulbs. You probably will still be able to see this, but it would explain the ‘issue’ if you were expecting it to come on at 100% brightness. ![]() Whilst it’s not possible to select “Off” there, if you have selected “Nightlight”, it will result in the linked bulbs being very dim. The button click options for the Hue Dimmer Switch within the Hue app From here, select the dimmer switch which is having issues and you’ll see the following sort of screen: To check this, launch the Hue app, go to “Settings” and then “Accessory Setup”. Whilst this point doesn’t relate to seeing a red light on your dimmer switch, I wanted to briefly flag this up as a potential issue you might face.įor example, you might have linked your dimmer switch to the wrong light bulb. Whilst we all tend to think that we’ve set everything up correctly, the reality is that modern life is busy and technology is confusing, so it’s easy to mis-configure your Hue dimmer switch. Solution #2: Ensure You Have Configured The Dimmer Correctly This issue is more common than you think, and it only takes a few minutes to troubleshoot, so that’s why I suggest you start here and ask around your household before trying anything else. So you might think that your Hue system (or dimmer switch) is malfunctioning, but someone just made a change to the system’s settings without your knowledge. Equally, someone may have re-configured how your dimmer switch works so that it modifies a different light bulb. ![]() ![]() Whilst these updates do need to be accepted, it’s possible that someone else in your house has kicked off these updates. Both my Hue Bridge and Hue dimmer switch are being updated
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