Error code · Microwave & Advantium

Monogram Advantium 120 Code F1: cavity thermistor reads open

Medium · inspection needed

Code: F1
Appliance: Microwave & Advantium
Brand: Monogram
Warranty: 30-day workmanship

What F1 means

On Monogram Advantium 120V speedcook ovens, such as the ZSC1001, ZSC1201 and ZSC1202, F1 points to the thermistor that reads the temperature inside the oven cavity. The control sees that sensor circuit as open, meaning the signal is missing or broken. This reading is based on the platform's published code list for the same speedcook family, so we describe it plainly rather than as a Monogram quotation. You will see F1 on the display and the oven will usually refuse to start a speedcook program.

Common causes of F1

Cavity thermistor circuit open
Loose or damaged sensor connection
Wiring between the sensor and control board
Control board input misreading the sensor

✓ One safe check you can try

1. Let the oven cool completely with the door closed. 2. Clear anything from the cavity and wipe up spills near the back wall. 3. Press the cancel or off pad, then try a simple microwave function to see whether F1 returns. 4. If F1 comes back, leave the oven unplugged from heavy use and call us.

! Why to stop there

An open sensor circuit can be the sensor, its plug or the wiring, so we measure the circuit before naming a part.
We confirm the reading is steady, not only an occasional glitch.
Nothing is repaired until you approve a written price, and the work has a 30-day workmanship warranty.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Microwave & Advantium codes

Abnormal High TempMonogram Advantium 240 Code Abnormal High Temp: cavity hotter than the setting DEMO ModeMonogram Advantium 240 Mode DEMO: Showroom Setting Active Lower Thermal Sensor OPENMonogram Advantium 240 Code Lower Thermal Sensor OPEN: bottom sensor disconnected Lower Thermal Sensor SHORTEDMonogram Advantium 240 Code Lower Thermal Sensor SHORTED: bottom sensor shorting out Humidity Sensor OPENMonogram Advantium 240 Code Humidity Sensor OPEN: moisture sensor circuit broken F2Monogram Advantium 120 Code F2: thermistor in the cavity is shorted F3Monogram Advantium 120 Code F3: key panel circuit shorted F4Monogram Advantium 120 Code F4: humidity sensor open or shorted

F1F1 questions

What does F1 mean on an Advantium 120?

It indicates the cavity temperature sensor circuit reads open. The control cannot measure oven temperature, so it stops speedcook cooking to protect itself.

Can I keep using the microwave function?

Try it once after cooling. If F1 returns right away, stop using the oven and call us rather than forcing it.

Will it need a new sensor?

Not always. Connections and wiring are tested first, and we quote in writing before repairs.

Book a visit

Still seeing F1?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 955-0955