How a Monogram range reports a fault
A Monogram range monitors its oven cavity through a temperature sensor (RTD) and runs everything through an electronic control, so when something is wrong it flashes an F-code on the display rather than simply misbehaving. Reading that code is the quickest way to an accurate Monogram range repair, because each one points at the sensor, the control board, the keypad, or the door-lock latch. Monogram ranges are dual-fuel and all-gas pro units, so the cooktop is gas while the F-codes belong to the electric oven control.
The F-series codes
F0 and F7 indicate a stuck or shorted key on the membrane keypad — clear it and retry, and replace the control if it persists. F1, F5 and F8 are control (ERC) or EEPROM board failures that usually need the board replaced. F2 means the oven exceeded its set temperature, pointing at the sensor or control. F3 is an open RTD sensor circuit and F4 a shorted one. F9 and FC are door-lock or motorized-latch faults, most common after a self-clean cycle, and FD is a meat-probe or probe-receptacle fault.
Display words that are not faults
Several messages are status, not stored codes. LOC or “Loc Door” is the self-clean lockout, “Unlock Door” appears when the latch is stuck after self-clean, ERR flags an invalid entry, and OFF means the cavity is too hot to start self-clean. A Sabbath symbol simply indicates Sabbath mode.
What to check, and when to call
A keypad lockout or a one-off ERR usually clears with a power cycle — disconnect the range for a minute and restore power. A persistent F3/F4 sensor code, an F1/F5/F8 board fault, or an F9/FC latch fault that strands the door locked needs a technician with genuine parts. Compare the full list on the error codes library, then book range repair. You can confirm your model on the manufacturer’s site at monogram.com.