Thermador oven won’t turn on. Why your Thermador oven won’t turn on, If a breaker or fuse trips in the electrical panel, replace it. For some models of ovens, operating the thermostat without power will result in the oven not turning on.
The igniter (spark) is most commonly the defective part that prevents the oven from turning on when the ignition system begins to function.
As a rule, if the igniter remains lit for more than 90 seconds before gas turns on, then look at it as defective and requires replacement. There are cases where a weak spark can be remedied by adjusting the oven temperature selector switch to another location.
However, if this fails to ignite after several attempts then one must conclude that even a weak spark is sufficient to operate at full power, and thus replacement is necessary as well if this persists.
Thermador oven won’t turn on
This article describes some common reasons and solutions for a Thermador oven that won’t turn on.
Defective Igniter
Igniters are responsible for getting the gas burner in your oven to light up. Without a properly-working igniter, the gas won’t ignite and you’ll be stuck with an unlit stovetop making it very difficult to get food cooking quickly enough.
As it turns out, this is quite common and can happen a lot of times over the life of your stove because igniters can wear out over time.
If the igniter becomes weak, it will fail to perform either one of its intended tasks correctly. If the valve does not open, there will be no heat coming from your oven and if you’re unable to test for continuity using a multimeter or other test equipment.
Then you may have a more serious problem entirely in which case you should call someone qualified person.
The bake element does not have continuity
When the bake element is heating, it will glow and look like a steady flame. If one of your bake elements has gone out, you might not be able to light it back up with a match.
The next time you’re at the hardware store, remember to read up on multimeters. Using this handy piece of equipment, you can quickly test for continuity and identify problems that are preventing your elements from lighting correctly.
You can also safely touch the surface of a fully heated heating element to see whether or not it has changed temperature with an oven mitt or towel.
If it’s completely cool, then this may indicate that there is something wrong with your bake elements and they may need to be replaced.
The broil element has burned out
The broil element glows bright red when it is turned on. If the element does not glow, check to see if the breaker switch has been tripped or the power is off. Check for loose electrical connection at the junction box.
Refer to the owner’s manual for instructions about checking for continuity on the broil element. A continuity test found that the broil element is dead. Replace the broil element according to instruction in “Replacing Elements.”
Replace Thermal Fuse
The thermal fuse may trip under certain conditions. If the oven does not turn on and the ceramic fuse has tripped it is most likely due to a faulty control board which will need to be replaced.
The culprit behind this issue could also be the relay coils on the back of the oven’s control board, but this issue would seem more common with older models than newer ones.
Incoming Power issue
Ovens require 240 volts of alternating current. They might also have a connection to the regular 120-volt power source but this is used solely for ignition.
To determine whether the oven is working via electricity, use a multimeter to test the voltage supplied by the wall socket connected to your gas or electric oven during use.
Faulty Oven Control Board
Sometimes the stove doesn’t turn on because the gas is off, while other times it may not work because of a defective control board that connects to the burners.
Since replacing the control board is extremely difficult, testing all of the burners and rechecking the fuse is always a good first step before trying to replace the control board just to make sure it’s not something simpler like a bad breaker or blown fuse.
If you find out that none of these are broken, then you definitely have to test for a bad switch or faulty wiring that connects to the timer or control board in your unit.
Safety Valve issue
The gas valve controls the flow of gas to the oven’s burner and would likely fail if it was heated.. Before replacing the safety valve, test if it has continuity via a continuity test such as a multimeter.
If you find that there is no continuity present (i.e your multimeter does not beep), and all of the other heating components are working properly for this given moment in time then most likely all you have wrong with your system is that pesky little old safety valve which needs to get replaced as soon as possible for your own personal safety.
Temperature Control Thermostat problems
Thermostats monitor temperatures and cycle on and off to maintain them at a certain level of comfort. Different kinds of thermostats have different settings:
The one in your oven monitors not just temperature but heat as well, while others could be set to keep the size of something constant or work as a light detector.
Temperature control thermostats usually aren’t very complex most run checks over twenty minutes and then turn off for four. With no electricity, the units will stop functioning entirely until power is back on in full capacity.
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