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Code decoder

Monogram error code library

What the code on your display means, whether it is safe to check yourself, and when to stop and call a technician.

Codes
85
Appliances
13
Updated
October 2026
Er39 Monogram ZHU Induction Cooktop Code Er39: touch board electronics Cooktop · medium Er20 Monogram ZHU Induction Cooktop Code Er20: touch board error stored Cooktop · medium Er22 Monogram ZHU Induction Cooktop Code Er22: another touch board reading Cooktop · medium E7 Monogram ZHU Induction Cooktop Code E7: unidentified system error Cooktop · high E9 Monogram ZHU Induction Cooktop Code E9: temperature sensor reading wrong Cooktop · high E5 Monogram ZHU Induction Cooktop Code E5: filter board electronics Cooktop · high E6 Monogram ZHU Induction Cooktop Code E6: generator board electronics Cooktop · high Er31 Monogram ZHU Induction Cooktop Code Er31: filter boards not paired Cooktop · medium Er47 Monogram ZHU Induction Cooktop Code Er47: touch board link lost Cooktop · medium Lower Thermal Sensor OPEN Monogram Advantium 240 Code Lower Thermal Sensor OPEN: bottom sensor disconnected Microwave & Advantium · medium Lower Thermal Sensor SHORTED Monogram Advantium 240 Code Lower Thermal Sensor SHORTED: bottom sensor shorting out Microwave & Advantium · medium Humidity Sensor OPEN Monogram Advantium 240 Code Humidity Sensor OPEN: moisture sensor circuit broken Microwave & Advantium · medium Abnormal High Temp Monogram Advantium 240 Code Abnormal High Temp: cavity hotter than the setting Microwave & Advantium · high DEMO Mode Monogram Advantium 240 Mode DEMO: Showroom Setting Active Microwave & Advantium · low C5 Monogram ZET Wall Oven Code C5: lower encoder temperature link lost Wall Oven · medium C6 Monogram ZET Wall Oven Code C6: lower mode encoder out of contact Wall Oven · medium F Code on LCD Screen Monogram ZTS90 Wall Oven Code F: Function Error Message Wall Oven · medium LCD Screen Locked Monogram ZTS90 Wall Oven: LCD Locked Against Touches Wall Oven · low Sabbath Mode Monogram ZTS90 Wall Oven: Sabbath Mode Active Wall Oven · low LOCKED flashes in display Monogram ZET Wall Oven Message "LOCKED" Wall Oven · low F-co Monogram ZGP Range Code F-co: Stored F code menu Wall Oven · low SF Monogram ZET Wall Oven: SF Menu Will Not Appear Wall Oven · low Control Lockout Indicator Monogram ZHU Induction Cooktop: Control Lock Indicator Lit Cooktop · low Blinking ON indicator Monogram ZHU Induction Cooktop: ON Indicator Blinking Cooktop · low E alternating with c Monogram ZHU Induction Cooktop Code E alternating with c: keys sensed as held down Cooktop · low E alternating with o Monogram ZHU Induction Cooktop Code E alternating with o: induction electronics overheated Cooktop · high E (flashing alone) Monogram ZHU Induction Cooktop Code E (flashing alone): hardware error, call for service Cooktop · medium F1 Monogram Advantium 120 Code F1: cavity thermistor reads open Microwave & Advantium · medium F2 Monogram Advantium 120 Code F2: thermistor in the cavity is shorted Microwave & Advantium · medium F3 Monogram Advantium 120 Code F3: key panel circuit shorted Microwave & Advantium · medium F4 Monogram Advantium 120 Code F4: humidity sensor open or shorted Microwave & Advantium · medium F6 Monogram Advantium 120 Code F6: cavity running too hot Microwave & Advantium · high Control Panel LOCKED Monogram Advantium Message "Control is LOCKED" Microwave & Advantium · low SERVICE MAY BE NEEDED Monogram Advantium 240 Message "SERVICE MAY BE NEEDED" Microwave & Advantium · medium Upper Thermal Sensor OPEN Monogram Advantium 240 Code Upper Thermal Sensor OPEN: upper sensor circuit broken Microwave & Advantium · medium Upper Thermal Sensor SHORTED Monogram Advantium 240 Code Upper Thermal Sensor SHORTED: upper sensor reads as a short Microwave & Advantium · medium CX Monogram ZGP Range Code CX: Communication error Professional Range · medium C1 Monogram ZGP Range Code C1: Main relay board link Professional Range · medium C2 Monogram ZGP Range Code C2: Upper temperature encoder Professional Range · medium C3 Monogram ZGP Range Code C3: Upper mode encoder Professional Range · medium C4 Monogram ZGP Range Code C4: Auxiliary relay board link Professional Range · medium C5 Monogram ZGP Range Code C5: Lower temperature encoder Professional Range · medium C6 Monogram ZGP Range Code C6: Lower mode encoder Professional Range · medium SF Monogram ZGP Range Code SF: Special features menu Professional Range · low Prod Monogram ZGP Range Code Prod: Factory test mode Professional Range · low F2 Monogram ZET Wall Oven Code F2: cavity temperature over the limit Wall Oven · high F3 Monogram ZET Wall Oven Code F3: oven sensor open Wall Oven · medium F4 Monogram ZET Wall Oven Code F4: oven sensor reads shorted Wall Oven · medium F7 Monogram ZET Wall Oven Code F7: a shorted key on the control Wall Oven · medium F8 Monogram ZET Wall Oven Code F8: EEPROM data shift failure Wall Oven · medium F9 Monogram ZET Wall Oven Code F9: function error flashing on the display Wall Oven · medium F8 Monogram ZET Wall Oven Code F8: control memory error after a bad write Wall Oven · medium F9 Monogram ZET Wall Oven Code F9: cooling fan stall or open thermal switch Wall Oven · medium FC Monogram ZET Wall Oven Code FC: door latch error Wall Oven · medium CX Monogram ZET Wall Oven Code CX: communication lost between boards Wall Oven · medium C1 Monogram ZET Wall Oven Code C1: upper relay board not answering Wall Oven · medium C2 Monogram ZET Wall Oven Code C2: upper temperature encoder link lost Wall Oven · medium C3 Monogram ZET Wall Oven Code C3: no reply from the upper mode encoder Wall Oven · medium C4 Monogram ZET Wall Oven Code C4: lower relay board stops answering Wall Oven · medium AUTO Light Flashing Monogram ZBD9900 Dishwasher Code AUTO Light Flashing: water is not heating up Dishwasher · medium HEAVY Light Flashing Monogram ZBD9900 Dishwasher Code HEAVY Light Flashing: too much water inside the tub Dishwasher · medium NORMAL Light Flashing Monogram ZBD9900 Dishwasher Code NORMAL Light Flashing: thermistor reading out of range Dishwasher · medium LIGHT Light Flashing Monogram ZBD9900 Dishwasher Code LIGHT Light Flashing: the tub is not filling Dishwasher · medium SPEED Light Flashing Monogram ZBD9900 Dishwasher Code SPEED Light Flashing: inlet valve leaking through Dishwasher · high RINSE Light Flashing Monogram ZBD9900 Dishwasher Code RINSE Light Flashing: pressure sensor signal reads high Dishwasher · medium AUTO + HEAVY Lights Flashing Monogram ZBD9900 Dishwasher Code AUTO + HEAVY Lights Flashing: water will not drain Dishwasher · medium AUTO + SPEED Lights Flashing Monogram ZBD9900 Dishwasher Code AUTO + SPEED Lights Flashing: turbidity sensor reading uncertain Dishwasher · medium START/RESET Light Flashing Monogram ZBD6800 Dishwasher Code START/RESET Light Flashing: cycle canceled, tub draining Dishwasher · low F6 Monogram ZGP Range Code F6: Lockout switch wiring Professional Range · medium F2 Monogram ZGP Range Code F2: Oven over-temperature Professional Range · high F4 Monogram ZGP Range Code F4: Shorted oven sensor Professional Range · medium F8 Monogram ZGP Range Code F8: Control memory error Professional Range · medium F9 Monogram ZGP Range Code F9: Cooling fan airflow switch Professional Range · high F3 Monogram ZGP Range Code F3: Open oven sensor Professional Range · medium F7 Monogram ZGP Range Code F7: Shorted key input Professional Range · medium F6 Monogram ZGP Gas Range Code F6: Door lockout motor circuit Professional Range · medium F8 Monogram ZGP Gas Range Code F8: EEPROM data shift failure Professional Range · medium F9 Monogram ZGP Gas Range Code F9: Open sail switch Professional Range · high FC Monogram ZGP Range Code FC: Door latch error Professional Range · medium Flashing Status Light Monogram ZDT/ZDP Dishwasher Code Flashing Status Light: Door or Cycle Interrupted Dishwasher · low LEAK DETECTED Monogram ZDT/ZDP Dishwasher Message "LEAK DETECTED" Dishwasher · high Start Status Indicator Light Flashing Monogram ZDT/ZDP Dishwasher: START Light Blinking After Door Opened Dishwasher · low Beeping Once Every Minute Monogram ZDT/ZDP Dishwasher Beeping Every Minute: Door Left Open Dishwasher · low Control Panel Lights Go Off While Setting Monogram ZDT/ZDP Dishwasher Panel Lights Dark During Cycle Setup Dishwasher · low Sanitized Light Not Lit at End of Cycle Monogram ZDT/ZDP Dishwasher: Sanitized Indicator Dark After Cycle Dishwasher · low

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