Wall Oven : Won't heat

For a gas wall oven that isn't heating, check your gas supply cut-off valve to make sure it's open. A weak or broken igniter can also prevent a gas wall oven from heating. A broken igniter won't glow. A weak igniter will glow but it won't get hot enough to ignite the gas, so the safety gas valve won't open and the oven won't heat. Replace the igniter if it's weak or broken.

In an electric oven, a broken bake or broiler element can prevent the oven from heating. A tripped thermal switch on the back of the oven can also prevent an electric oven from heating. Reset the thermal switch if it tripped. Electric wall ovens require 240 volts of electric power to heat, so one of the two 120-volt house circuit breakers can trip, preventing the wall oven from heating. Check the house circuit breakers for the wall oven and reset a breaker if you find one tripped.

In either a gas or an electric oven with dial controls, a failed oven control thermostat can prevent the oven from heating. For electronically-controlled gas or electric wall ovens that have a digital display, a failed keypad, bad electronic control board or faulty relay control board can prevent the oven from heating.

wall oven

These repairs may help solve your wall oven problem

Reset the wall oven thermal switch or replace the thermal fuse

Reset the wall oven thermal switch or replace the thermal fuse

Many ovens have a thermal switch or a thermal fuse that protects the oven from overheating.

If the oven has a thermal fuse, the fuse trips when the oven temperature gets too hot. You can't reset a thermal fuse so you'll have to replace the fuse if it trips.

You'll also need to investigate the cause of overheating if the oven got extremely hot before the fuse tripped. A stuck relay on the electronic control board can cause the bake or broil element to heat constantly. Check the control board for a burnt spot or melted relay. Replace the control board if damaged.

If the oven has a thermal switch, you can reset the switch by turning off electricity to the oven, removing the exterior back oven panel and pushing the red reset button on the back of the switch. If the switch tripped during the self-clean cycle because excessive residue inside the oven caused the oven to overheat, then you can reset the thermal switch and the oven may work properly. If the thermal switch continues to trip and the oven doesn't overheat, you'll likely need to replace the thermal switch because the switch is tripping at the normal oven operating temperature. If the oven overheats and trips the thermal switch after you reset the thermal switch, then you'll need to investigate the cause of the overheating as described above.

June 1, 2015
By Lyle Weischwill
How to replace a wall oven thermal fuse

Is your wall oven not heating at all? It could be the thermal fuse has blown. This DIY repair guide gives easy-to-follow instructions on how to replace the wall oven thermal fuse.

Repair difficulty
Time required
 60 minutes or less
Read more
How to replace the thermal switch in a wall oven

When a wall oven isn't heating at all, the problem could be the thermal switch. If you've reset the switch but the oven still won't heat, this DIY repair guide and video explain how you can replace the oven thermal switch in less than 60 minutes.

Repair difficulty
Time required
 60 minutes or less
Read more
Replace the wall oven igniter

Replace the wall oven igniter

Most gas ovens have a glow-bar oven igniter and a safety gas valve. Those components are connected in a series-type electrical circuit. When the glow-bar oven igniter is hot enough to safely ignite the gas, the safety gas valve opens. Replace the oven igniter if doesn't glow, or if it glows but doesn't get hot enough to open the gas valve. Some ovens have a separate igniter for the bake burner and the broiler burner, which operate on the same principle.

June 1, 2015
By Lyle Weischwill
How to replace a gas wall oven igniter

If the wall oven burner isn't lighting, the igniter might not be getting hot enough to open the gas valve and light the gas. This DIY repair guide and video give step-by-step instructions for replacing the igniter.

Repair difficulty
Time required
 45 minutes or less
Read more
Replace the wall oven control thermostat

Replace the wall oven control thermostat

The oven thermostat is a temperature-controlled switch that controls heating inside the oven. Replace the thermostat if it doesn't maintain the oven temperature incorrectly, if it fails to turn on to the oven burner to heat the oven, or if it fails to turn off the burner when the oven is at the set temperature.

June 1, 2015
By Lyle Weischwill
How to replace a wall oven control thermostat

When a wall oven's temperature isn't hot enough or if it's too hot, the control thermostat could be the problem. This DIY repair guide shows how to easily replace the oven control thermostat.

Repair difficulty
Time required
 60 minutes or less
Read more
Replace the wall oven bake or broiler element

Replace the wall oven bake or broiler element

In an electric oven, the bake element at the bottom of the oven and the broil element at the top of the oven provide the heat for baking and broiling. Replace them if they're broken or if the oven isn't heating properly.

June 1, 2015
By Lyle Weischwill
How to replace a wall oven broil element

Is the broil element not heating in your electric wall oven? This DIY repair guide shows how to replace a faulty oven broil element in 4 quick steps.

Repair difficulty
Time required
 15 minutes or less
Read more
How to replace a wall oven hidden bake element

A wall oven bake element not heating could mean there's a break in the element, even if you see no damage. This DIY repair guide and video show how to replace the hidden oven bake element in 30 minutes or less.

Repair difficulty
Time required
 30 minutes or less
Read more
Replace the wall oven electronic oven control board

Replace the wall oven electronic oven control board

The electronic oven control (EOC) board governs the timing and execution of oven functions such as baking and broiling. It's usually in the control console and often has a digital clock on the front of its housing. Replace the electronic control board if it doesn't light up when it's supplied with electrical power, if it doesn't operate properly or doesn't properly send voltage to the bake or broil element (in an electric oven) or burner (in a gas oven).

Replace the wall oven control keypad membrane or overlay

Replace the wall oven control keypad membrane or overlay

Some oven electronic control boards use a separate membrane keypad that communicates the button selections to the control board through a ribbon wire connection. Replace the membrane keypad if buttons don't work. Other electronic control boards have selection buttons incorporated into the body of the control board, with an overlay that marks the selection buttons. Replace the overlay if it's damaged or discolored.

Replace the wall oven relay control board

Replace the wall oven relay control board

Some wall ovens have a relay control board that's separate from electronic control board. The relay board has electrical relays that control voltage going to major loads such as the bake element or a surface element, based on signals from the control board. Replace the relay control board if it fails to properly control voltage to a component.

Symptoms common to all wall oven

Choose a symptom to see related wall oven repairs.

Main causes: faulty oven temperature sensor, control system problem, weak burner igniter, damaged oven element
Main causes: bad oven door lock assembly, faulty electronic control board, wiring failure
Main causes: lack of gas supply, broken igniter, tripped circuit breaker, broken oven element, tripped thermal fuse, control system failure
Main causes: lack of electrical power, bad electronic control board, faulty oven control thermostat
Main causes: broken bake element, bad bake burner igniter, tripped thermal switch, control system failure
Main causes: broken broil element, faulty broil burner igniter, control system failure

Repair guides common to all wall oven

These step-by-step repair guides will help you safely fix what’s broken on your wall oven.

How to replace the thermal switch in a wall oven

If the oven won't heat after resetting the thermal switch, replace the thermal switch.

Repair difficulty
Time required
 60 minutes or less
June 1, 2015
By Lyle Weischwill
How to replace wall oven door hinges

If your oven door flops open fast, it's time to replace the hinges. Follow these step-by-step instructions to do it yourself.

Repair difficulty
Time required
 30 minutes or less
June 1, 2015
By Lyle Weischwill
How to replace a wall oven thermal fuse

The thermal fuse trips to prevent the over from excessively overheating. The oven won't heat again until you replace the fuse.

Repair difficulty
Time required
 60 minutes or less

Articles and videos common to all wall oven

Use the advice and tips in these articles and videos to get the most out of your wall oven.

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