I can't find anything in the PW70 manual that talks about a power switch. However, they do mention aI'm wondering if the power on switch on the pw-70 (its there) needs to be connected to the carnetix. I'm not familiar with this but you may want to ground this wire.Remote ON/OFF control, Logic level is LOW - Output voltage is enabled.
Do you have a way of measuring the +12V output from the P1260? Just want to make sure it's really working properly.