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Dimmer 211 Issues with LEDs


zslev
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Hi All, 

 

I recently had a set of Fibaro 211 dimmers installed. They control some LED ceiling lights. I've made sure each circuit has a power load between 25 and 80 watts, which is what is recommended in this guide: 

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The dimmers all work, however the brightness of the lights appears to max out at around 50% dimming. If I dim the lights above this level they will no longer dim down but will be 'stuck' at maximum brightness unless I turn them off completely. If I turn them off completely and then turn them on again they will flash once and then stay off. This will continue to happen unless I dim them back down below ~50%

 

I've tried playing around with parameters 12 and 13 (min and max brightness) and this only makes them behave even more erratically. Most notably, there seems to be a discontinuity somewhere in the dimming range where the brightness jumps from ~40% all the way to 100%.

 

Also it's worth noting that I'm using the Fibaros with a Samsung Smartthings hub. This shouldn't be a problem though because Smartthings has certified the 211 dimmer. 

 

Is it possible I need a relay? 

 

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