So I wanted to contribute on this post and share my experience in converting my Pit Boss 700FB's controller to the Pellet Pro PID controller. The reason I wanted to convert to a PID controller?
This:
As you can see, it is set to 200 degrees but the temp is at 290.
I was trying to smoke a brisket at 225 and the temps kept running up towards 300. So I reduced the temp to 200 and even after about 30-40 minutes, it was still running up towards 300 degrees. I tried the smoke setting and adjust the P settings and even then, the temps swings were 85 to 90 degrees. I will note that I had good luck maintaining temps on it at higher temps but I bought it primarily smoking low and slow. So I was ready to take it back and spend a considerable amount more for a pellet grill with PID when I happened upon this forum and speedj's post regarding a similar issue and how he addressed it by just replacing the controller with the Pellet Pro PID.
So again, many thanks to
speedj for his awesome post with pics which I ended up using during my install yesterday as the PID controller didn't come with installation instructions and the wire colors didn't match up for all the connectors.
The only thing I did differently was that I didn't lay my grill down so I didn't have to remove the insides or pellets. Figured there was plenty of room to get underneath and so I just laid down a mat and climbed underneath it. Here's what my bottom plate looked like:
And after removing the 8 screws and bottom plate:
After removing the zip ties, it was pretty easy to get to everything:
And the connects that didn't match up identically were just as speedj cited:
Yellow from the smoker goes to Green/White, Red goes to Blue/White and the Braided leads for the fire pot go to the Red/White on the controller.
BTW - I too removed these two wires for the probe and used my existing one already in my Pit Boss Grill
Note: On the back, those two wires are secured in by two small screws. I didn't pay attention to how the ends of the wires were in when I loosened the screws and pulled out the wires. When I put my existing ones in and retightened the screws, the wires were still kind of loose. They have to go into their side slots a certain way. Sorry I didn't think to take a pic of that, but I would recommend looking to see how the ones already on the new PID controller are in before you loosen and remove them so you can put the existing ones in those same spots. After a quick adjustment on how those wire ends went in, I tightened again and they were in there securely.
Anyway, a nice benefit to doing this without laying it down, was after I connected all the wires, I was able to plug it in and test right away before closing it up.
It started right up but I initially wondered if I did something wrong because it was so much more quiet than what it was before. But it makes sense as it comes to temp and then adjusts the fan and auger speed to maintain that temp. Much more efficient! Shortly after starting it up, I noticed that lovely look and smell of smoke and then I closed the lid and let it come to temp. I only tested if for about 45 minutes as we were getting ready to head out but it held temps like a champ. I set for 225 and it would keep between 225-228, once hitting 230 before slowing going back down. I (and my brisket) can roll with that!
After turning it off and letting it do its 15 minutes burn off and cool down cycle, I unplugged it again, zipped tied up the loose wires and closed it all up.
All in all, the install was very quick and easy. I actually spent most of my time trying to find the right screws within my collection of screws at home to secure the plate and control pad back on the grill. The two screws that had secured my old controller were now too short due to the plate needed for the Pit Boss retrofit and the ones that came with the new PID for the actual controller were too small.
Afterwards:
There is the slight gap on the sides of the controller plate but I'm not too concerned about it as I always keep the cover on it when I'm not using it. And when I am using it, I keep it under my covered porch so I don't currently see the need for adding a gasket or weatherstripping. Visually you can't even see the gap unless you're looking for it and get close to it. :)
Needless to say, I'm chomping at the bit to try it out. Probably going to do ribs as that is a 5-6 hour cook I do during the day and and will be able to monitor for any issues during the cook.
Hope this helps someone. Cheers!