Electric OvenNot Heating?
You preheated to 375, came back ten minutes later, and it’s stone cold inside. Or it heats but never reaches the temperature you set. Electric oven heating problems split into a few clear categories — each with a different fix — and most are straightforward to diagnose once you know where to look. Here’s the breakdown.
What's probably wrong
Electric ovens that won’t heat almost always point to one of five things: a burned-out bake element (the big heating element at the bottom — the most common cause by a wide margin), a blown thermal fuse, a failed oven temperature sensor, a control board fault, or a failed broil element (if only broil is dead).
The good news: most electric oven heating problems are visible or testable in seconds. A burned-out element often shows broken spots, blisters, or sagging. Thermal fuse failures are continuity-testable in under a minute. Sensors are simple resistance checks. Where the wrong-diagnosis traps live: assuming a heating problem is the element when it’s actually a temperature sensor reading wrong, or assuming it’s the sensor when it’s a control board not driving the element.
The most common causes
Ranked by how often we see each one. The diagnostic that actually matters isn’t a guess from a list — it’s a tech listening to your machine, looking at the install, and checking the right things in the right order. But it’s useful to know what’s on the menu.
Bake Element Burned Out
The big heating element at the bottom of the oven cavity. Over time the metal sheath cracks and the element fails — sometimes you can see the damage (broken section, blistered spot, sagging), sometimes it’s an internal break with no visible sign. Continuity test confirms in seconds. The most common electric oven repair we see in Calgary homes by a wide margin.
Blown Thermal Fuse
A safety device wired into the heat circuit. It blows once, permanently, when the oven overheats — often triggered by a self-clean cycle pushing temperatures past the fuse’s limit. Cheap part, easy swap, but the underlying cause (a failed thermostat or sensor that let the oven run hot) needs to be diagnosed too, or the new fuse will blow again.
Oven Temperature Sensor Failure
The thin metal probe sticking out of the back wall of the oven cavity. It tells the control board how hot the oven is. When it fails — usually drifting in resistance with age — the control board gets bad info, and the oven heats wrong or doesn’t heat at all. Simple resistance test confirms it.
Control Board Fault
The main board signals the element to turn on. When the board has a relay failure, the element never gets power even though the rest of the oven works fine (display, timer, light, fan). Last-resort diagnosis after the cheaper parts upstream are ruled out — control boards are the expensive part of the diagnosis tree, and they’re also the most commonly misdiagnosed.
Broil Element Failure (if only broil is dead)
Same fundamental component as the bake element, just at the top of the cavity. Fails the same way and is replaced the same way. If the oven bakes fine but broil doesn’t work, the diagnosis is the broil element.
Wiring or Door Switch
Rare but real. Power loss to the element from a burned wire connection at the back. Faulty door switch interlock telling the oven the door is open (oven door open = heat shuts off, as a safety). Often diagnosable by sound — clicking from the door area, or no element warm-up sound at all when you preheat.
Before you call
A few things worth checking before you book — most narrow the cause, a few might resolve it outright:
Open the door — does the interior light come on? Does the display work? If both work, the oven has power and the problem is downstream. If neither works, check the breaker. Electric ovens run on a 240V double breaker — both halves need to be firmly ON, not in a half-tripped middle position.
Visible breaks, blisters, sagging, dark patches? You’ve found the problem. Don’t run the oven again until it’s replaced — a cracked element can short the circuit.
If broil heats (top element glows red) but bake doesn’t, you’ve narrowed the diagnosis to the bake element. If neither heats, the cause is upstream (sensor, fuse, or board).
F1, F2, F3, F7 codes typically map to sensor or board faults. Write them down. The code pre-sources the right part.
Self-clean’s extreme heat is the #1 cause of thermal fuse failures and control board damage. If yes, that’s almost always the trigger and the diagnosis starts with the fuse.
Why a real diagnosis matters
Electric oven diagnosis is straightforward when done in person — most causes are visible or take a quick continuity test. The trap is that the symptoms overlap: a faulty sensor and a failed element can both produce “won’t reach temperature,” and the wrong fix on the wrong part costs the homeowner twice.
Element first (cheap, common). Thermal fuse next (cheap, common after self-clean). Sensor next (cheap). Control board last (expensive). Each test takes seconds and rules out a wrong-part replacement before it happens.
If broil works and bake doesn’t, the diagnosis is the bake element. If broil doesn’t work and bake does, it’s the broil element. If neither works, the cause is upstream.
Ovens that died after self-clean often have BOTH a blown thermal fuse AND a stressed control board. We check both rather than swap one and have you call back in two months.
What the repair typically costs
Kodiak quotes labour as a flat rate per repair type, after diagnosis but before any work begins. Parts are quoted separately on your invoice. Typical labour ranges:
Most electric oven heat fixes — bake element, broil element, thermal fuse, oven temperature sensor — fall in the $220–$350 range for labour. Parts vary considerably by brand and model (here’s why); elements and sensors are typically cheap, control boards are not.
Heavier labour and the most expensive parts. The price is set after a real diagnosis confirms the board is the actual issue — many “control board” problems turn out to be cheaper sensors or fuses upstream.
Applied toward the repair if you proceed.
Your firm quote comes from your tech after diagnosis, before any work begins. You approve before we touch anything. Full pricing details.
Ready when you are
Kodiak Appliance Repair covers Calgary and area. Send us the details, or call with a question — we pick up.
More resources
Stove & Oven Repair Calgary
Main stove and oven service page — elements, sensors, controls and door seals.
Appliance Maintenance Guide
How to avoid the self-clean trap that kills boards and fuses.
Is It Worth Repairing?
Repair-vs-replace math on older wall ovens.
Why Parts Pricing Is Wild
Why control boards vary so much in price.
Honest, flat-rate appliance repair in Calgary and area. Run by a working tech who wants to do it right.