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2 Fibaro dimmers changing power/dimming level itself randomly


Question

Posted

Hello,

 

Since a few months, I find that 2 of my Fibaro dimmers seem to change the light intensity randomly at night. They go stronger and less strong. When I look in the logs, I can see increases and decreases in power over time. But no instructions/automations causing this.

 

Dimmer A is connected to 2 Led lamps with bypass, and dimmer B is connected to 2 incandescent 40 Watt lamps. I have tried forced auto calibration - they do not switch back to 0 but stay on forced calibration value 1 (dimmer B) or 2 (dimmer A).

 

Dimmer A has no log issues except that auto calibration took place and overrode values.

 

Dimmer B shows below. One of the two lamps died yesterday, maybe this is causing the issue?

 

Any recommendations? I would like to install more fibaro dimmers but this is not encouraging.

 

Other info: Smartthings Hub, Homebridge/Homekit.

 

Many thanks!

 

2018-07-30 10:07 PM CEST -1 day ago logMessage WARNING: Voltage drop detected!   
2018-07-30 10:07 PM CEST -1 day ago logMessage WARNING: Voltage drop detected!   
2018-07-30 10:07 PM CEST -1 day ago logMessage WARNING: Voltage drop detected!   
2018-07-30 10:05 PM CEST -1 day ago logMessage WARNING: Auto-calibration is being forced, but a value has been provided for parameter #30. This will be ignored! Check Live Logging for the auto-calibrated value shortly.   
2018-07-30 10:05 PM CEST -1 day ago logMessage WARNING: Auto-calibration is being forced, but a value has been provided for parameter #2. This will be ignored! Check Live Logging for the auto-calibrated value shortly.   
2018-07-30 10:05 PM CEST -1 day ago logMessage WARNING: Auto-calibration is being forced, but a value has been provided for parameter #1. This will be ignored! Check Live Logging for the auto-calibrated value shortly.   
2018-07-30 10:05 PM CEST -1 day ago logMessage WARNING: Load Error detected!   
2018-07-30 10:05 PM CEST -1 day ago logMessage WARNING: Voltage drop detected!   
2018-07-30 10:05 PM CEST -1 day ago logMessage WARNING: Voltage drop detected!

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