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OVEN & HOB FAULTS

Oven Heating Unevenly

Uneven cooking can be caused by a weak element, failed fan, blocked airflow, poor shelf placement, door-seal issues or inaccurate temperature sensing.

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Isolate electrical power and stop immediately if gas is smelled

Ovens and hobs combine mains electricity, high temperatures and, on gas appliances, combustible fuel. Do not dismantle while energised or continue using an appliance that trips, sparks, smells burnt or leaks gas.

MOST LIKELY CAUSES

Start with these

One element weak or failed Heat may come mainly from one direction.
Fan not circulating Hot and cool zones develop in the cavity.
Poor airflow or loading Large trays can block circulation.
Temperature calibration fault The actual temperature may differ from the setting.
◫ Symptom variations Match the exact heating, ignition or control pattern. ⌄
  • Food burns on one side
  • Top browns before bottom
  • Back cooks faster than front
  • Different shelves cook differently
  • Temperature varies widely
✓ Quick checks Simple checks before removing panels. ⌄
  1. Note which function or zone fails.
  2. Check the appliance lock, timer and selected mode.
  3. Confirm the cooker isolator and breaker are on.
  4. Look for visible element, seal or burner damage.
  5. Isolate before touching internal parts.
If the issue is a setting or obstruction: operation should return immediately.
If there is tripping, gas smell or internal failure: stop and call the appropriate engineer.
1 Step 1 — Check tray and shelf placement Isolate the appliance before removing covers or touching internal parts. ⌄

Process

Avoid blocking the fan or filling the cavity too tightly.

Success looks like: Air circulates more evenly.
Escalate when: Persistent unevenness suggests a component issue.
2 Step 2 — Compare cooking functions Isolate the appliance before removing covers or touching internal parts. ⌄

Process

Test fan and conventional modes separately.

Success looks like: The faulty mode is identified.
Escalate when: Uneven results in all modes may indicate calibration or sealing faults.
3 Step 3 — Check door sealing Isolate the appliance before removing covers or touching internal parts. ⌄

Process

Inspect the gasket and confirm the door closes evenly.

Success looks like: Heat remains inside the cavity.
Escalate when: A damaged seal or hinge needs repair.
⌁ Common causes explained Why oven and hob faults develop. ⌄

Uneven cooking can be caused by a weak element, failed fan, blocked airflow, poor shelf placement, door-seal issues or inaccurate temperature sensing.

The affected function is the strongest clue. A single failed mode points toward one element, ring or switch, while a total loss of operation suggests supply, control or safety-device faults.

⌘ Advanced diagnostics Engineer checks and repair work. ⌄
  • Measure cavity temperature with a calibrated probe.
  • Test individual elements.
  • Check fan motor speed.
  • Inspect thermostat or sensor accuracy.
  • Verify control-board cycling.
▣ Parts that may need replacing Common components linked to this fault. ⌄
  • Heating element
  • Fan motor
  • Door seal
  • Temperature sensor
  • Thermostat
! When to call an appliance engineer Conditions that should end basic troubleshooting. ⌄
  • The oven or hob trips the electrics.
  • There is a gas smell or unstable flame.
  • Internal electrical testing is required.
  • The appliance must be dismantled.
  • Controls, elements or wiring show heat damage.
  • The fault returns after basic checks.
? Frequently asked questions Common oven and hob questions. ⌄

Can one failed element stop the whole oven?

It depends on the model. Often one cooking mode fails while others still work.

Why does an oven trip only when hot?

Element insulation can break down as it heats, causing leakage to earth.

What should I do if I smell gas?

Turn off the appliance, avoid sparks or switches, ventilate the area and contact the appropriate gas emergency service or registered engineer.