Oven Not Heating at All? Here's What Might Be Going Wrong
By Michael RMarch 18, 20268 min read
An oven that powers on but won't heat can quickly ruin dinner plans. In Ottawa homes, we most often see failed heating elements, blown thermal fuses, sensor issues, or power supply problems.
The good news is there are a few safe checks you can do before booking service. Below is a practical guide to the most common causes and what to look for.
Common Symptoms
Oven turns on but does not get hot
Bake or broil does not work (or one works and the other does not)
Temperature is far below the set point
Oven shuts off early or throws an error code
No heat after a power outage or surge
Quick Answer
If your oven isn't heating, start by confirming the breaker is fully on (many ovens use two linked breakers), then check whether the bake/broil element glows red when turned on. If elements do not heat and power is confirmed, the issue is often the element, thermal fuse, temperature sensor, or control board.
1. Heating Element Failure (Electric Ovens)
A failed bake or broil element is one of the most common causes of an oven not heating. Sometimes the element shows visible damage (blistering or a break).
If you are comfortable and the oven is unplugged, an element can be checked for continuity. Otherwise, book service to confirm the diagnosis.
2. Blown Thermal Fuse
Thermal fuses are safety devices that cut power if the unit overheats. If a fuse blows, the oven may turn on but fail to heat, or it may appear dead depending on design.
If a fuse blew, the root cause (overheating/airflow) should be addressed, not just the fuse replacement.
3. Temperature Sensor Issues
A faulty temperature sensor can cause incorrect temperature readings and prevent the oven from heating properly.
Sensor diagnostics are model-specific. If temperatures are erratic or the oven refuses to heat, professional testing is recommended.
4. Power Supply Problems
Ovens typically require 240V. A partially tripped breaker can allow the display to work but prevent the elements from heating.
Reset the breaker fully (off then on). If the breaker trips again, stop and contact an electrician or technician.
5. Control Board Failure
If the control board is not sending voltage to the heating circuit, the oven will not heat even when everything else appears normal.
Control issues are best diagnosed with proper electrical testing and manufacturer diagnostics.
When to Call a Technician
Call for service if you smell burning, see sparking, notice repeated breaker trips, or the oven still will not heat after basic checks.
Fixer provides oven repair across Ottawa — including Kanata, Barrhaven, Orleans, and Nepean.
Common causes include a failed heating element, blown thermal fuse, faulty temperature sensor, or a control board issue.
Can I replace a heating element myself?
Many homeowners can, but always unplug the oven and verify the correct part by model number. If you are unsure, book professional service.
Is it worth repairing an old oven?
Often yes if the oven is under 10–15 years old and the fix is a common part (element, sensor). If major components fail, compare repair cost to replacement. → Read our repair vs. replace guide
What should I check first?
Start with the breaker/power supply, then check bake/broil element behavior and look for obvious damage.
Need Oven Repair in Ottawa?
If your oven won't heat, Fixer can diagnose and repair it quickly across Ottawa.