Tunze 7095 Controller issue

[Inversus]

Hey there,

so Im currently in the process of filling my tank and I have enough water inside to play a bit with the two powerheads (tunze 6055) and the controller (7095).
But no matter what I do, the one powerhead wont work with the controller.

While the one is doing what I programmed (pulse), the other just works constantly on the same powerlevel set on the powerhead-controller.
I switched cables and channels, but nothing seems to work on it.

Any idea what Im doing wrong? (Unfortunately on one powerhead-controller the "wheel" broke, but I can set it with a screwdriver.)

 

[X-37B]

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