I replaced my control cabinet's filter on my 02 sl-10 today. I wanted to verify the cooling fan was working but apparently it goes on intermitently. I checked it a bunch of times during the day but it was never on. Anyone know how to check the fan to see if it's actually working. Is there a setting somewhere or a relay I can push to test?

There is a temp sensor in the control cabinet. If the control gets warm the fan will come on. I would trace the fan wiring back to the Power PCB and move the plug to a 90C plug on the PCB, should be 120vac and that should immediatialy turn on the fan.