scotner
01-08-2019, 02:12 PM
There are several threads on how to build a PID to control 110 volt devices. My question is about using a PID to control a wall oven. I pulled the sheet metal off to explore the control board and wiring for my oven. If I traced it out correctly it appears that one side of the 220 is connected directly to both heating elements. There are two relays on the board, one marked bake and the other is marked broil. The other side of the 220 connects to them. So you just need to break one side to cycle the heat, right? Just disconnect from the control board and use my SSR to replace the bake relay. Then pick up one side of the 220 and the neutral to get 110 for the PID?
I have wired several 220 devices but never really looked at how they control. I found one schematic online showing two SSRs used to break both sides of the wiring to the element. Mine does not appear to be wired that way and I do not see why that would be necessayry. Never too old to learn. Thanks.
I have wired several 220 devices but never really looked at how they control. I found one schematic online showing two SSRs used to break both sides of the wiring to the element. Mine does not appear to be wired that way and I do not see why that would be necessayry. Never too old to learn. Thanks.