Miele Microwaves Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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F1
Microwave will not start; display shows F1 shortly after pressing Start.
Keypad / Control Panel Communication Fault
F10
Microwave displays F10 and will not start; sometimes occurs after a power outage.
Configuration / EEPROM Fault
F11
Microwave shows F11 and beeps; some functions may be disabled.
Communication Fault Between Control Boards
F12
Microwave displays F12 and may not accept input from certain buttons.
Key Matrix / Button Line Fault
F13
Microwave shows F13; grill or convection functions may be disabled on combination models.
Grill / Convection Temperature Sensor Fault
F14
Microwave displays F14 and may shut down grill or convection heating.
Overheat Protection / Safety Thermostat Trip
F15
Microwave shows F15; turntable may not rotate or may stop mid-cycle.
Turntable Motor / Position Sensor Fault
F16
Microwave displays F16 and may not recognize door status correctly.
Door Sensor / Reed Switch Fault
F2
Microwave stops heating shortly after start; display shows F2.
Cavity Temperature Sensor Fault
F20
Microwave shows F20 and will not start; often associated with internal temperature issues.
Ambient Temperature Sensor Fault
F3
Microwave does not heat; display shows F3 shortly after starting a program.
Magnetron Temperature Sensor / Thermal Cut-out Fault
F30
Microwave displays F30 and may shut down during operation.
Internal Overtemperature / Cooling System Fault
F4
Microwave runs but does not heat; F4 appears on the display.
Inverter / High-Voltage Power Supply Fault
F40
Microwave shows F40 and will not operate; often related to mains frequency or voltage.
Mains Frequency / Voltage Detection Fault
F41
Microwave displays F41 and may intermittently shut off or reboot.
Internal Communication Timeout
F5
Microwave stops mid-cycle and displays F5; may also fail to start.
Door Switch / Door Interlock Fault
F50
Microwave shows F50 and will not start; may be associated with motorized features (e.g., motorized door or panel).
Motor Drive Fault (Accessory Motor)
F6
Microwave display shows F6 and unit will not start any program.
Control Panel / User Interface Fault
F7
Microwave shows F7 and may shut down unexpectedly during operation.
Cooling Fan / Airflow Fault
F8
Microwave displays F8 and will not heat; some functions may still operate.
Humidity / Steam Sensor Fault
F9
Microwave shows F9 and may not respond to input or may reset unexpectedly.
Power Supply / Low Voltage Fault
Symptom
Microwave beeps continuously or randomly without user input.
Keypad Short / Control Panel Fault
Symptom
Microwave cavity light stays on even when the door is closed and the unit is not running.
Door Switch / Control Logic Fault
Symptom
Microwave cavity shows rust spots or peeling paint, especially on the floor or near the door.
Cavity Coating Degradation
Symptom
Microwave clock resets to 00:00 or loses time frequently.
Power Interruption / Control Board Memory Issue
Symptom
Microwave display is blank and unit appears completely dead; interior light does not turn on when door opens.
No Power / Main Fuse or Supply Failure
Symptom
Microwave display is very dim or segments are missing, but the unit still operates.
Display Module Degradation
Symptom
Microwave door does not close fully or pops open during operation.
Door Alignment / Latch Retention Fault
Symptom
Microwave door is difficult to open or does not latch smoothly.
Door Latch / Handle Mechanical Wear
Symptom
Microwave door seal/gasket appears damaged, loose, or contaminated with food.
Door Seal Integrity Issue
Symptom
Microwave door will not open; latch seems stuck closed.
Door Release Mechanism Jammed
Symptom
Microwave emits a crackling or arcing sound inside the cavity, sometimes with visible sparks.
Cavity Arcing / Waveguide Contamination
Symptom
Microwave has a burning smell during or after use, even when no food is burning.
Overheating Components / Insulation Odor
Symptom
Microwave has a strong chemical or plastic smell when new or after high-temperature use.
Normal New Appliance Odor / High-Temperature Off-Gassing
Symptom
Microwave interior light does not come on, but heating and other functions work normally.
Cavity Lamp Failure
Symptom
Microwave interior light does not turn off when the door is closed, but the unit otherwise works.
Door Sensing / Lamp Control Fault
Symptom
Microwave interior light works and display is on, but the turntable does not rotate.
Turntable Drive Failure
Symptom
Microwave intermittently stops heating during a cycle, then resumes or restarts after a pause.
Intermittent Overheating / Thermal Cut-out Cycling
Symptom
Microwave is excessively noisy during operation (rattling, vibrating against cabinetry).
Installation / Vibration Noise
Symptom
Microwave keypad buttons are unresponsive or respond only when pressed very hard.
Worn or Contaminated Membrane Keypad
Symptom
Microwave light and display work, but pressing Start does nothing (no relay click, no fan).
Start Circuit / Door Interlock Logic Fault
Symptom
Microwave makes a rattling or scraping noise when the turntable rotates.
Turntable Mechanical Noise
Symptom
Microwave makes loud buzzing or humming noise when heating, louder than usual.
High-Voltage Component Noise / Magnetron or Transformer Issue
Symptom
Microwave runs (light on, turntable rotates, fan runs) but food does not heat at all.
No Microwave Output / Magnetron Circuit Failure
Symptom
Microwave trips the household circuit breaker or RCD/GFCI when starting or during operation.
Electrical Short / Ground Fault
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| F1 |
Microwave will not start; display shows F1 shortly after pressing Start.
|
Keypad / Control Panel Communication Fault | View Details |
| F10 |
Microwave displays F10 and will not start; sometimes occurs after a power outage.
|
Configuration / EEPROM Fault | View Details |
| F11 |
Microwave shows F11 and beeps; some functions may be disabled.
|
Communication Fault Between Control Boards | View Details |
| F12 |
Microwave displays F12 and may not accept input from certain buttons.
|
Key Matrix / Button Line Fault | View Details |
| F13 |
Microwave shows F13; grill or convection functions may be disabled on combination models.
|
Grill / Convection Temperature Sensor Fault | View Details |
| F14 |
Microwave displays F14 and may shut down grill or convection heating.
|
Overheat Protection / Safety Thermostat Trip | View Details |
| F15 |
Microwave shows F15; turntable may not rotate or may stop mid-cycle.
|
Turntable Motor / Position Sensor Fault | View Details |
| F16 |
Microwave displays F16 and may not recognize door status correctly.
|
Door Sensor / Reed Switch Fault | View Details |
| F2 |
Microwave stops heating shortly after start; display shows F2.
|
Cavity Temperature Sensor Fault | View Details |
| F20 |
Microwave shows F20 and will not start; often associated with internal temperature issues.
|
Ambient Temperature Sensor Fault | View Details |
| F3 |
Microwave does not heat; display shows F3 shortly after starting a program.
|
Magnetron Temperature Sensor / Thermal Cut-out Fault | View Details |
| F30 |
Microwave displays F30 and may shut down during operation.
|
Internal Overtemperature / Cooling System Fault | View Details |
| F4 |
Microwave runs but does not heat; F4 appears on the display.
|
Inverter / High-Voltage Power Supply Fault | View Details |
| F40 |
Microwave shows F40 and will not operate; often related to mains frequency or voltage.
|
Mains Frequency / Voltage Detection Fault | View Details |
| F41 |
Microwave displays F41 and may intermittently shut off or reboot.
|
Internal Communication Timeout | View Details |
| F5 |
Microwave stops mid-cycle and displays F5; may also fail to start.
|
Door Switch / Door Interlock Fault | View Details |
| F50 |
Microwave shows F50 and will not start; may be associated with motorized features (e.g., motorized door or panel).
|
Motor Drive Fault (Accessory Motor) | View Details |
| F6 |
Microwave display shows F6 and unit will not start any program.
|
Control Panel / User Interface Fault | View Details |
| F7 |
Microwave shows F7 and may shut down unexpectedly during operation.
|
Cooling Fan / Airflow Fault | View Details |
| F8 |
Microwave displays F8 and will not heat; some functions may still operate.
|
Humidity / Steam Sensor Fault | View Details |
| F9 |
Microwave shows F9 and may not respond to input or may reset unexpectedly.
|
Power Supply / Low Voltage Fault | View Details |
| – |
Microwave beeps continuously or randomly without user input.
|
Keypad Short / Control Panel Fault | View Details |
| – |
Microwave cavity light stays on even when the door is closed and the unit is not running.
|
Door Switch / Control Logic Fault | View Details |
| – |
Microwave cavity shows rust spots or peeling paint, especially on the floor or near the door.
|
Cavity Coating Degradation | View Details |
| – |
Microwave clock resets to 00:00 or loses time frequently.
|
Power Interruption / Control Board Memory Issue | View Details |
| – |
Microwave display is blank and unit appears completely dead; interior light does not turn on when door opens.
|
No Power / Main Fuse or Supply Failure | View Details |
| – |
Microwave display is very dim or segments are missing, but the unit still operates.
|
Display Module Degradation | View Details |
| – |
Microwave door does not close fully or pops open during operation.
|
Door Alignment / Latch Retention Fault | View Details |
| – |
Microwave door is difficult to open or does not latch smoothly.
|
Door Latch / Handle Mechanical Wear | View Details |
| – |
Microwave door seal/gasket appears damaged, loose, or contaminated with food.
|
Door Seal Integrity Issue | View Details |
| – |
Microwave door will not open; latch seems stuck closed.
|
Door Release Mechanism Jammed | View Details |
| – |
Microwave emits a crackling or arcing sound inside the cavity, sometimes with visible sparks.
|
Cavity Arcing / Waveguide Contamination | View Details |
| – |
Microwave has a burning smell during or after use, even when no food is burning.
|
Overheating Components / Insulation Odor | View Details |
| – |
Microwave has a strong chemical or plastic smell when new or after high-temperature use.
|
Normal New Appliance Odor / High-Temperature Off-Gassing | View Details |
| – |
Microwave interior light does not come on, but heating and other functions work normally.
|
Cavity Lamp Failure | View Details |
| – |
Microwave interior light does not turn off when the door is closed, but the unit otherwise works.
|
Door Sensing / Lamp Control Fault | View Details |
| – |
Microwave interior light works and display is on, but the turntable does not rotate.
|
Turntable Drive Failure | View Details |
| – |
Microwave intermittently stops heating during a cycle, then resumes or restarts after a pause.
|
Intermittent Overheating / Thermal Cut-out Cycling | View Details |
| – |
Microwave is excessively noisy during operation (rattling, vibrating against cabinetry).
|
Installation / Vibration Noise | View Details |
| – |
Microwave keypad buttons are unresponsive or respond only when pressed very hard.
|
Worn or Contaminated Membrane Keypad | View Details |
| – |
Microwave light and display work, but pressing Start does nothing (no relay click, no fan).
|
Start Circuit / Door Interlock Logic Fault | View Details |
| – |
Microwave makes a rattling or scraping noise when the turntable rotates.
|
Turntable Mechanical Noise | View Details |
| – |
Microwave makes loud buzzing or humming noise when heating, louder than usual.
|
High-Voltage Component Noise / Magnetron or Transformer Issue | View Details |
| – |
Microwave runs (light on, turntable rotates, fan runs) but food does not heat at all.
|
No Microwave Output / Magnetron Circuit Failure | View Details |
| – |
Microwave trips the household circuit breaker or RCD/GFCI when starting or during operation.
|
Electrical Short / Ground Fault | View Details |
No matching codes found
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