Direct answer: When the lower oven will not heat but the upper oven still works, the usual culprits are a failed lower oven bake element, a lower oven temperature sensor problem, or a lower oven setting issue rather than the whole appliance losing power.
Most likely: Start by confirming the lower oven is actually set to Bake and not Delay Start, Sabbath, or a timed mode, then look for a lower oven bake element that stays dark, blistered, split, or only heats in spots.
Separate the lookalikes early: a dead lower oven, a lower oven that preheats forever, and a lower oven that broils but will not bake do not point to the same fix. Reality check: on double ovens, one cavity can fail while the other still works normally. Common wrong move: replacing parts because the display lights up, even though the lower oven was left in a delayed or locked mode.
Don’t start with: Do not start by ordering a control board. On this symptom, the lower oven bake element and sensor are more believable first checks.
The display responds, you can start a cycle, but the lower cavity never gets warm.
Start here: Check settings and door closure first, then inspect whether the lower oven bake element shows any damage or stays completely cold during Bake.
Broil in the lower oven makes heat, but Bake does little or nothing.
Start here: This strongly points to the lower oven bake element or its connection rather than a whole-house power problem.
It eventually warms up, but preheat drags on and cooking is uneven.
Start here: Look for a weak lower oven bake element, a bad lower oven temperature sensor reading, or a leaking lower oven door gasket.
The control acts normal, but the lower cavity stalls well below set temperature.
Start here: Watch the heat pattern and compare Bake versus Broil. If Broil works better than Bake, stay on the bake-element path first.
This is the most common electric-oven reason a lower cavity will not heat on Bake, especially when Broil still works. A failed element may be split, bubbled, burned through, or simply stay dark.
Quick check: Start Bake on the lower oven and look through the window after a few minutes. If the lower bake element never glows or only one section warms, it is a strong lead.
A sensor that reads out of range can make the lower oven underheat, overheat, or preheat forever even though the control appears normal.
Quick check: If the lower oven gets some heat but misses temperature badly or shuts heat off too soon, the sensor moves up the list.
Delayed start, control lock, Sabbath-related behavior, or a door not fully closing can make the lower oven seem dead when the hardware is still fine.
Quick check: Cancel the cycle, power the oven off briefly, restart a plain Bake cycle, and make sure the lower door closes flush without springing back.
If the bake element and sensor check out, the lower oven may not be sending power to the bake circuit. This is less common than an element failure and carries more electrical risk.
Quick check: Suspect this only after the simple checks are done and the lower bake element shows no damage but still does not heat.
Double ovens can fool you with mode settings, delayed cycles, or a lower door that is not fully seated. This is the fastest no-parts check.
Next move: If the lower oven starts heating normally, the problem was likely a mode, temporary control glitch, or door-closure issue. If the lower oven still stays cold or barely warms, move to the heat-pattern check.
What to conclude: A working display does not prove the lower bake circuit is working. You want to know whether the lower oven is failing to start heat at all or just failing to make enough heat.
This separates a bad lower oven bake element from a broader lower-oven problem without taking anything apart yet.
Next move: If lower Broil works but lower Bake does not, the lower oven bake element becomes the leading fix. If neither Bake nor Broil heats in the lower oven, or the results are inconsistent, keep going before buying parts.
What to conclude: A lower oven that broils but will not bake usually has a failed bake element. A lower oven that gets no heat on either function points more toward power to that cavity, wiring, or control output.
Most confirmed lower-oven no-bake calls come down to a visibly failed element or a heat leak that makes the oven seem weak.
Next move: If the lower bake element is visibly damaged, replacing that lower oven bake element is the most direct repair. If the element looks intact and the gasket is decent, the next best check is the lower oven temperature sensor path.
If the lower oven makes some heat but misses temperature badly, the sensor is more believable than the control board.
Next move: If the sensor tests bad or the symptom is clearly temperature drift rather than no heat, a lower oven temperature sensor is a supported repair path. If the sensor seems fine and the lower oven still will not heat properly, the remaining likely issue is wiring or lower control output.
By now you should have enough evidence to choose a sensible part or call for service without shotgun-replacing components.
A good result: If the lower oven now preheats normally and holds temperature, run one full bake cycle to confirm the fix.
If not: If the lower oven still will not heat after a confirmed element or sensor repair, the fault is likely in the lower oven wiring or control output and is no longer a good guess-and-buy DIY job.
What to conclude: The practical homeowner fixes here are the lower bake element, lower sensor, and sometimes the lower door gasket. Past that point, the risk and cost go up fast.
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On a double oven, each cavity has its own heating parts and often its own sensor path. It is common for the lower oven bake element or lower oven sensor to fail while the upper oven still works normally.
Yes. That is one of the strongest clues. A lower oven can still make heat on Broil while the lower oven bake element is open or partly failed.
Usually no. A bad lower oven door gasket more often causes slow preheat, heat loss, and uneven baking. A completely cold lower oven points more toward the bake element, wiring, or control output.
No. A normal display does not prove the lower bake circuit is working. On this symptom, it is smarter to rule out the lower oven bake element and lower oven temperature sensor before chasing a control problem.
Think about the symptom pattern. If the lower oven gets some heat but runs too cool, too hot, or preheats forever, the sensor is a better suspect. If the lower oven is completely cold, the bake element or power to that circuit is more likely.
Replacing a lower oven bake element, lower oven temperature sensor, or lower oven door gasket is often manageable for a careful homeowner with the power off. Burned wiring, tripping breakers, or anything that requires live-voltage checks is a good place to stop and call for service.