Unfortunately, the FUT037Z+ controller does not allow you to simultaneously turn on the RGB diode and the white diode.
In the case of the same wifi controller, i.e. the FUT037W+, everything works properly and both diodes can be turned on simultaneously.
Is there a zigbee controller available that can support turning on two diodes simultaneously for RGBW or RGBCCT strips?
Philips App change color by RGB, don’t have white color on color ring. The white color is mixed by RGB chip. So FUT037Z+ not simultaneously turn on RGB and white. We must ensure that our controller work with Philips APP. FUT037W+ is different type which control by TUYA APP, there is white color and RGB color on color ring, we can light up both colors together.