Hazers run after Hog4 shutdown

We have 2 hazers (Jem K1) which we control haze output from the Hog4 lighting console. At the end of the show when we shutdown the lighting console both hazers run at 100% as soon as they loose dmx signal. We have been manually going backstage and proceed to unplug both of the hazers to power them off. I noticed that when we patched the Jem K1 hazers it has a control option to shutdown the fixtures. We have tried this and can't seem to get it to work. As soon as we shut down the board, they both run at 100%. Is there a way to eliminate the need to have to unplug the hazers