Hi DIY'ers! I've been doing everything I can to keep this 20 years old central air/ furnace unit running in our condo. The unit has a slow Freon leak and we've gotta load a pound in at the start of every summer. This week, the blower decided it's not going to turn off anymore. It keeps running, no matter what setting the thermostat is on (Auto, On, Off, Air, Heat). The only way to turn it off is to cut the power using the switch on the side of the unit. I've read some similar threads on this site but I'm still not sure what to do next. I pulled the green wire behind the thermostat as some have instructed and the blower continued to run, so that rules out the thermostat, right? That's leading me to believe that this might be related to a busted "blower relay" (as I've also read about). I took the cover off of the electrical box inside the blower unit, but even using the wiring diagram on the cover, I'm unable to identify the blower relay. I've included some images below that might help you guys (or not!). I may not even be looking in the right place... Total bozo when it comes to this. HVAC is completely foreign to me so anything you could do to help me avoid a huge repair cost would be amazing! [ATTACH]71730[/ATTACH] [ATTACH]71731[/ATTACH]

I have read the previous thread on this topic that was closed. This is a Lennox c33-30b-2f-3 The fuse blows when calling for cool, works fine with heat. I DC the low voltage wiring at the AC unit outside and inside. I get 1.6 ohms or so between the wires. I visually inspected the wires and cross checked to ground. I connected the unused green wire instead of the red one and still the same blown fuse with the wires DC at the compressor. The fuse doesn't blow if I DC the wires at the panel. As soon as I put them on, DC outside, it blows immediately on start up. I am perplexed. Will that 1.6 ohms that I'm getting do this or is just any semblance of resistance at all causing it? Is it the panel? Any help is appreciated. Thank you