A built-in microwave in a kitchen cabinet stopped halfway through a cycle, a covered glass dish of vegetables inside behind the mesh window and a faint wisp of steam on the glass.

SKS F12: the speed oven's low thermistor reads open

The speed oven's control reads two thermistors.

(844) 393-5858

Mon–Sat, 8am–8pm

  • Sensors and temperature
  • Microwave control board and touchpad repair
  • Source: SKS

Book a visit

Three short steps, about a minute.

or call (844) 393-5858

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 microwave

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.

01

Press CLEAR/OFF to clear F12.

02

Reprogram the cooking function and see whether the code returns.

03

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 problems

Where F12 usually leads

Microwave control board and touchpad repair.

Control board, keypad membrane or display · moderate to highest.

In SKS's own words

Cause: Low Thermistor Opened Sensor
SKS SKSLV3001S 30-inch built-in microwave speed oven owner's manual SKS SKSLV3011MT transitional speed oven owner's manual

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 areas
A family warming plates of food at a built-in microwave in a bright kitchen
For the heart of your home.

Questions
about F12.

Can I clear F12 myself?
Press CLEAR/OFF to clear F12. If it comes back, it needs a visit.
My SKS speed oven showed F1 once and F12 later. Are they connected?
They are two different sensors, but a shared connector or harness can affect both. Tell the technician about both codes so the wiring is checked along with each sensor.
Does F12 on an SKS speed oven stop only convection, or microwave too?
The manual does not split it by mode; it tells you to clear and reprogram. If the code keeps coming back, treat the whole unit as out of use until it is checked.
Should I reset the breaker to clear F12 on my SKS speed oven?
CLEAR/OFF is the reset the manual gives. Turning the breaker off is a sensible way to keep the unit idle while you wait for a visit.

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.

(844) 393-5858 Schedule a repair