Assuming that the PEM E2100 are DMX512 controlled RGB lights , you need to check if the channels are being addressed correctly.
Most DMX RGB LED lights have a Intensity channel, a Red channel , a Green channel and a Blue channel. This is a basic 4 channel setup.... you need to not only raise the value of the correct color or colors but ALSO to raise the value of the Intensity channel to full or a lower value.
Check to see if the Intensity channel is at zero or not. The lights will remain in black out if it is zero.
You can send me the tech details/manual of the light and I can help further. My company has been in the fountain, son-et-lum and animatronics business in India for two decades. Wish we could have supplied you !
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