I have been getting err codes on my Pro-C. Started last summer. When I got the first one this spring, an err 6, I had a company come fix it. They replaced the #6 solenoid. Worked great for months. Then I got an err 1. They replaced the #1 solenoid. They also suggested replacing the rest of them should I get another err code. Got one and then replaced all the solenoids. Just got an err 3 this morning. When I run the diagnostics, I can't get an err code. All zones work fine when testing. I'm start...
