UKING ZQ02357 BEAM not working - no brightness at all

The post itself should include as much information as possible, including:

• UKING 
• ZQ02357 Beam
• Moving HEAD (BEAM)
• https://www.uking-online.com/product/mini-230w-led-moving-head-rgbw-stage-lights-with-strip-lights-with-14-gobos-13-colors-18-channels-activated-by-dmx-512-voice-activation-for-wedding-disco-parties-and-indoor-events/?srsltid=AfmBOoq8z_kpptX5ZSlQr8-JLcHy4Cg2gzbW-YR6cRLblGxqp5ldLvtX
• Manual: https://gigamove.rwth-aachen.de/de/download/030021d4882554194af581b2726de326
• 18

The Fixture does not work with RB- however it does work when a strobe effect ist applied. i gues it has something to do with the dimmer funktion ch3 or the strobe funktion ch2