Why I can’t change the RGBW pathway light to warm white by remote?

You can use the remote change the light to warm white. It’s not the light failure. Because the RGBW path way light have 2 kings of white: one is RGB light mixed the natural light and one is the single warm white. When you use the remote control color palette to adjust the light to a mixed white light, the default is RGB mode. Pressing the "W" button at this time is equivalent to superimposing warm white light onto the white light of a three-color mix. This will cause the warm white color is not pure. It is very simple to debug the warm white light, just use the remote control to turn off the light strip, and then press the "W" button, then it is pure warm white light.