52
Communication between Control Boards on Double Ovens
On double ovens, the control boards use a low voltage communication to determine what functions can be
performed by both ovens at the same time and in what order. For example, only one oven can be in self-clean
mode at a time. If both ovens are put in self-clean mode at exactly the same time, neither will work. The first
oven selected to clean will enter clean, the other will not. Once an oven is in self-clean mode, the board for
that oven sends a 5VDC signal to the other board to indicate it is in use. A 5 VDC signal is also sent when an
oven is in preheat. However, once an oven is in preheat, the other oven can then be set to preheat as well. The
following diagrams show the communication between the two boards when self-clean or preheat is in use.
Upper Oven
Board
Common Signal Ground
Black (5 VDC)
White (2.1 VDC)
1 2 3 4 5 6
Lower Oven
Board
1 2 3 4 5 6
Lower Oven in Self-Clean Mode – Upper Oven Off
Upper Oven
Board
Common Signal Ground
Black (2.1 VDC)
White (5 VDC)
1 2 3 4 5 6
Lower Oven
Board
1 2 3 4 5 6
Upper Oven in Self-Clean Mode – Lower Oven Off
Upper Oven
Board
Common Signal Ground
Red (5 VDC)
Green (2.1 VDC)
1 2 3 4 5 6
Lower
Oven
Board
1 2 3 4 5 6
Lower Oven in Preheat – Upper Oven Off (also when lower oven selected first)
Upper Oven
Board
Common Signal Ground
Red (2.1 VDC)
Green (5 VDC)
1 2 3 4 5 6
Lower
Oven
Board
1 2 3 4 5 6
Lower Oven in Preheat – Upper Oven Off (also when lower oven selected first)
Summary of Contents for Designer DEDO530SS
Page 18: ...18 Service Procedures Part Locator...
Page 50: ...50 Oven Control Board Oven Control Board Connections...
Page 68: ...68...
