

SKS F12: the speed oven's low thermistor reads open
The speed oven's control reads two thermistors.
Mon–Sat, 8am–8pm
- Sensors and temperature
- Microwave control board and touchpad repair
- Source: SKS
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What F12
actually means.
The speed oven's control reads two thermistors. F12 is the open-circuit reading from the one labeled low thermistor, so the control is missing half of its temperature picture and ends the cycle with a beep.
SKS microwave display
What to do when F12 shows on the microwaveKind of codeSensors and temperature
The control has stopped trusting what one of its sensors reports: the cook or humidity sensor that ends a sensor reheat when steam rises, or a thermal cutout that trips when the cavity or the magnetron runs too hot. A cutout that opens stops the microwave mid-cycle and often recovers once it cools; one that keeps tripping, or a sensor program that shuts off at once every time, needs the sensor, its wiring or the airflow behind it checked.
Usually leads toMicrowave control board and touchpad repair
Tracing a dead display, keys that do not answer or a code that keeps returning to the keypad, the ribbon, the relays or the main board, and replacing only the part that failed.
Shows up asWhat a Microwave Error Code Is Telling You
A microwave error code may be a letter and a number on the display, a lock or demo word, a row of dashes, or a beep with a blinking clock, and it can show while the microwave still heats or block every key until it is cleared.
MakeSKS
Signature Kitchen Suite microwaves looked at where they are installed, with the display message and the last mode used written down first.
SourceSKS SKSLV3001S 30-inch built-in microwave speed oven owner's manual
Code table of the SKSLV3001S and SKSLV3011MT built-in microwave speed ovens.
Before you book,
in this order.
Each step comes from SKS's own guidance for F12 on its microwaves. Follow it to the end: the last card says whether this is a visit.
Press CLEAR/OFF to clear F12.
Reprogram the cooking function and see whether the code returns.
If it does, write down F12 and book a visit; testing the sensor means working behind the cavity, which is not an owner task.
Still there?
It usually turns into microwave control board and touchpad repair. Book with the code and the model number.
What not to do
F12 does not concern the high thermistor, which uses F1 and F2. It is not the humidity sensor either, which SKS reports as F14.
What you may
notice with it.
The microwave problems F12 tends to arrive with. Answer these at the microwave before anyone is booked.
All problemsWhere F12 usually leads
Microwave control board and touchpad repair.
SKS
microwaves.
Signature Kitchen Suite microwaves looked at where they are installed, with the display message and the last mode used written down first.
SKS microwave repairMore SKS codes
Sensors and temperature on other makes
Microwave hood combination
The microwave that hangs from the wall cabinets above the burners, heating food in its cavity while its own fan, light and filters handle the steam and grease rising from the pans beneath it.
Built-in microwave
A microwave set into a tall cabinet or a wall of cabinetry at eye level, either a countertop body wrapped in a trim kit or a true built-in model, including speed and convection microwaves that brown as well as heat.
Microwave drawer
A microwave built under a counter or into a kitchen island that opens like a drawer at the touch of a key, with a motor and gears sliding its cavity out toward you.
In SKS's own words
Cause: Low Thermistor Opened Sensor
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Code table of the SKSLV3001S and SKSLV3011MT built-in microwave speed ovens.
SKS F12 microwave repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about F12.
Can I clear F12 myself?
My SKS speed oven showed F1 once and F12 later. Are they connected?
Does F12 on an SKS speed oven stop only convection, or microwave too?
Should I reset the breaker to clear F12 on my SKS speed oven?
Back to your everyday
Still showing F12?
Three details make the booking useful: the characters or beeps just as they appeared, every character of the model number, and whether a cup of water still warms up. With those, the technician arrives already halfway to the answer.