We have a motorized roll-up door similar to the one pictured. There are two identical switches for the door as pictured, one on the inside wall of the door and one on the outside wall of the door. These push-button switches have UP, DOWN, and STOP positions. We noticed that now when the door is being opened the STOP button is pushed (on either switch on either side of the wall), instead of the door stopping as usual during normal proper operation, the door immediately begins going down instead of stopping as it should. Any troubleshooting help and/or ideas what could be the problem and fix for it would be appreciated. thanks

Hi Recently, when i use my dryer, the main breaker becomes extremely hot and trips, while the dedicated breaker for the dryer remains cool and does not trip. so, first I thought I have bad breaker (100 amp) and I changed it with a new one. BTW, I also checked how much amp the dryer pulls from the main and that is about 30. I do not have any other high energy consuming devices in my house so it is extremely unlikely that I am pulling even close to 100amp. Replacing the main breaaker dis not solve the issue so i realized that the dryer plug had arced and burnt. I changed both the outlet and the dryer cable today, however the breaker still gets hot and trips (only when dryer is on). So I have 2 questions: 1- why does the dedicated dryer breaker never trips while the main breaker, which is new, does trip? 2- what is the next step you recommend? Should I change the heating coils inside the dryer? thank you