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Oven Not Heating? Causes, Checks and When to Call a Technician

Whether the oven won't heat at all, only the grill works, or it stopped after a power cut, here's what usually causes it.

R350 call-out fee to inspect & diagnose

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Quick answer: The most common causes are a failed heating element (bake, grill or fan element), a faulty thermostat, a failed selector switch or timer, or a failed fan motor in fan ovens. Many built-in ovens also won't heat until the clock is set after a power outage, so check that first.

SymptomLikely causeFirst check
Oven not heating at allClock not set; element; thermostat; selector switch; thermal cut-outSet the clock, check the breaker
Only the grill worksBake (bottom) element or selector switchLook for a break or blister on the element
Fan oven cooks unevenlyFan element or fan motorCheck whether the fan turns
Oven too hot or burning foodThermostat or temperature sensorCompare with an oven thermometer
Trips the power when switched onShorted element or damaged wiringDon't keep resetting. Book a technician.

Checks you can do yourself

  1. Set the clock. After load shedding, many built-in ovens show a flashing time and won't heat until it's set.
  2. Check the breaker and isolator for the oven.
  3. Try each function (bake, grill, fan) to narrow down which element has failed.
  4. Look at the elements with the oven off and cold. A visible break, bulge or blister means it has failed.

Gas ovens and hobs

If a gas burner clicks but won't light, the igniter or spark switch may be faulty, or the burner may be wet or not seated properly. If a flame goes out when you let go of the knob, the thermocouple (flame safety device) has failed. That's a safety part and must be replaced, not bypassed. If you smell gas, turn off the supply, open windows and don't use any switches.

Repair or replace?

Ovens are usually worth repairing, because most faults are elements, thermostats and switches. Built-in ovens from Bosch, Siemens, Smeg, Defy and Elba are almost always worth repairing, because a replacement also has to fit your existing cabinet.

When to call a technician

Call or WhatsApp 072 686 0472. Every job starts with a flat R350 diagnostic call-out across Johannesburg, Pretoria and the East Rand.

Related pages

By Absolute Repairs Β· Updated September 2026

FAQs

Why won't my oven heat after load shedding?

Many built-in ovens need the clock to be set before they'll heat after a power cut. If it still won't heat after setting the time, a surge may have damaged the timer, control board or an element.

Why does only my grill work?

Usually the bake (bottom) element has failed, or the selector switch isn't sending power to it.

How much does oven repair cost in Gauteng?

Every oven repair starts with a flat R350 call-out fee, which covers travel, diagnosis and a written quote. Elements and switches are the most common and affordable repairs.

Do you repair gas stoves?

Yes. We repair gas hobs and cookers, including igniters, spark switches, burners and thermocouples.

Book a Repair in Gauteng

Tell us your suburb, the brand and model, and the fault. Standard R350 diagnostic call-out.

πŸ“ž Call 072 686 0472 πŸ’¬ WhatsApp Us

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