Black glass and an unframed trim distinguish the DO30U/B from its framed L Series sibling, but the mechanics are the same: two independently heated cavities sharing one relay-driven control board, in a 30-inch double-oven cabinet. On a unit this age, the shared board is actually less often the culprit than a single cavity’s own sensor or latch motor.
Each oven’s self-clean cycle can lock its own door independently, and it is normal for only one to be affected at a time. The tell-tale sign of a relay problem on the shared board, rather than a single-cavity part, is usually that both ovens start showing unrelated problems around the same time — worth mentioning if that is what is happening when you call.
Key Features
- 30-inch double-cavity built-in wall oven
- L Series control that spells problems out in words rather than numeric codes
- Unframed installation, the trim difference recorded by the letter after the size
Most Common Issues on This Model
Oven will not heat, or will not reach the set temperature
Uneven baking front to back or between racks
Door locked and will not release after a self-clean cycle
Convection fan noisy, or not running at all
One cavity works normally while the other does not