Grundig Microwaves Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Microwave does not start; display is on, but pressing START does nothing or beeps and returns to clock.
Door Interlock Safety Circuit Fault
E02
Microwave stops heating shortly after start or will not start heating; error E02 appears on the display.
Thermal Cut-Out / Overheat Protection Activated
E03
Microwave runs (light and fan on, turntable may rotate) but food does not heat; E03 appears after a short time.
Magnetron / High Voltage Circuit Failure
E04
Microwave display shows E04 and the unit will not start; sometimes accompanied by interior light flickering or fan not running.
Low Voltage Power Supply / Control Board Fault
E05
Microwave stops mid-cycle and displays E05; may restart after cooling or power reset.
Cavity Temperature Sensor / Thermistor Fault
E06
Microwave shows E06 and will not start; grill or convection functions may also be disabled on combination models.
Grill / Convection Temperature Sensor Fault
E07
Turntable does not rotate and E07 appears on the display; microwave may still heat unevenly.
Turntable Motor / Rotation System Fault
E08
Microwave beeps and shows E08 when starting; interior light may come on but fan and turntable do not run.
Cooling Fan Motor Fault
E09
Microwave displays E09 and will not start; sometimes occurs after a power surge or outage.
EEPROM / Configuration Memory Error
E10
Microwave shows E10 and may shut down or refuse to start; often associated with convection models.
Convection Fan / Motor Fault
E11
Microwave displays E11 and beeps; keypad or touch controls may be unresponsive or behave erratically.
Keypad / Touch Control Panel Fault
E12
Microwave shows E12 and may shut down when using grill or combination modes.
Grill Element Overheat / Protection Fault
E13
Microwave displays E13 and may not respond to some sensor-based auto programs.
Humidity / Steam Sensor Fault
E14
Microwave shows E14 and may shut off immediately after pressing START.
Inverter Power Module Fault (Inverter Models)
E15
Microwave displays E15 and the interior light remains on even with the door closed, or the unit will not start.
Door Sensing / Monitor Switch Fault
E16
Microwave shows E16 and may intermittently shut off or reset during operation.
Mains Voltage / Power Input Fault
E17
Microwave displays E17 and auto weight/auto cook programs do not function correctly.
Weight Sensor / Turntable Load Detection Fault (if equipped)
E18
Microwave shows E18 and may not accept new settings; clock may reset unexpectedly.
Real-Time Clock / Backup Power Fault
Symptom
Convection (hot air) function does not heat, but microwave and grill work.
Convection Heater / Fan Circuit Failure
Symptom
Microwave buttons do not respond or respond intermittently; some keys work, others do not.
Membrane Keypad Wear or Failure
Symptom
Microwave cavity accumulates condensation or water droplets on walls and door after cooking.
Condensation / Ventilation Issue
Symptom
Microwave clock and settings reset whenever the door is opened or closed.
Power Interruption from Door or Loose Connection
Symptom
Microwave display is dim, flickering, or some segments are missing, but the unit still heats.
Display Module / Control PCB Fault
Symptom
Microwave display is on but START button does nothing; no relay click, no fan, no light change.
Start Circuit / Relay Drive Fault
Symptom
Microwave door does not close properly; it feels loose or misaligned, and the unit may not start.
Door Hinge / Alignment Fault
Symptom
Microwave door will not open or is very hard to open after cooking.
Door Latch / Release Mechanism Fault
Symptom
Microwave emits sparks or arcing inside the cavity during cooking.
Cavity Arcing / Waveguide Contamination
Symptom
Microwave grill function does not heat, but normal microwave heating works.
Grill Element Circuit Failure
Symptom
Microwave has a strong burning or electrical smell during or after operation.
Overheating Component or Cavity Contamination
Symptom
Microwave interior light does not come on, but the unit heats and operates normally.
Cavity Lamp Failure
Symptom
Microwave interior light, fan, and turntable run when the door is closed, even without pressing START.
Door Switch / Monitor Circuit Miswiring or Failure
Symptom
Microwave interior paint is peeling or rust is visible inside the cavity.
Cavity Corrosion / Coating Failure
Symptom
Microwave is completely dead: no display, no lights, no response when buttons are pressed.
No Power – Primary Power Circuit Failure
Symptom
Microwave is very noisy during operation with rattling, scraping, or grinding sounds from the cavity area.
Turntable / Mechanical Drive Noise
Symptom
Microwave makes loud buzzing or humming noise during operation, louder than normal, sometimes with a burning smell.
High Voltage Component Overload or Short
Symptom
Microwave produces excessive vibration or rattling noises from the cabinet during operation.
Cabinet Vibration / Mounting Fault
Symptom
Microwave runs but does not heat food; turntable, light, and fan operate normally, but food remains cold.
No Heating – High Voltage System Failure
Symptom
Microwave runs but food heats unevenly; some areas are very hot while others are cold.
Uneven Heating / Turntable or Stirrer Fault
Symptom
Microwave runs for a few seconds then stops and returns to the clock without heating the food.
Intermittent Door Interlock or Thermal Protection Trip
Symptom
Microwave trips the household circuit breaker or blows the fuse when starting.
Short Circuit or Overcurrent on Startup
Symptom
Microwave turntable does not rotate, but the unit heats food (though unevenly).
Turntable Drive Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Microwave does not start; display is on, but pressing START does nothing or beeps and returns to clock.
|
Door Interlock Safety Circuit Fault | View Details |
| E02 |
Microwave stops heating shortly after start or will not start heating; error E02 appears on the display.
|
Thermal Cut-Out / Overheat Protection Activated | View Details |
| E03 |
Microwave runs (light and fan on, turntable may rotate) but food does not heat; E03 appears after a short time.
|
Magnetron / High Voltage Circuit Failure | View Details |
| E04 |
Microwave display shows E04 and the unit will not start; sometimes accompanied by interior light flickering or fan not running.
|
Low Voltage Power Supply / Control Board Fault | View Details |
| E05 |
Microwave stops mid-cycle and displays E05; may restart after cooling or power reset.
|
Cavity Temperature Sensor / Thermistor Fault | View Details |
| E06 |
Microwave shows E06 and will not start; grill or convection functions may also be disabled on combination models.
|
Grill / Convection Temperature Sensor Fault | View Details |
| E07 |
Turntable does not rotate and E07 appears on the display; microwave may still heat unevenly.
|
Turntable Motor / Rotation System Fault | View Details |
| E08 |
Microwave beeps and shows E08 when starting; interior light may come on but fan and turntable do not run.
|
Cooling Fan Motor Fault | View Details |
| E09 |
Microwave displays E09 and will not start; sometimes occurs after a power surge or outage.
|
EEPROM / Configuration Memory Error | View Details |
| E10 |
Microwave shows E10 and may shut down or refuse to start; often associated with convection models.
|
Convection Fan / Motor Fault | View Details |
| E11 |
Microwave displays E11 and beeps; keypad or touch controls may be unresponsive or behave erratically.
|
Keypad / Touch Control Panel Fault | View Details |
| E12 |
Microwave shows E12 and may shut down when using grill or combination modes.
|
Grill Element Overheat / Protection Fault | View Details |
| E13 |
Microwave displays E13 and may not respond to some sensor-based auto programs.
|
Humidity / Steam Sensor Fault | View Details |
| E14 |
Microwave shows E14 and may shut off immediately after pressing START.
|
Inverter Power Module Fault (Inverter Models) | View Details |
| E15 |
Microwave displays E15 and the interior light remains on even with the door closed, or the unit will not start.
|
Door Sensing / Monitor Switch Fault | View Details |
| E16 |
Microwave shows E16 and may intermittently shut off or reset during operation.
|
Mains Voltage / Power Input Fault | View Details |
| E17 |
Microwave displays E17 and auto weight/auto cook programs do not function correctly.
|
Weight Sensor / Turntable Load Detection Fault (if equipped) | View Details |
| E18 |
Microwave shows E18 and may not accept new settings; clock may reset unexpectedly.
|
Real-Time Clock / Backup Power Fault | View Details |
| – |
Convection (hot air) function does not heat, but microwave and grill work.
|
Convection Heater / Fan Circuit Failure | View Details |
| – |
Microwave buttons do not respond or respond intermittently; some keys work, others do not.
|
Membrane Keypad Wear or Failure | View Details |
| – |
Microwave cavity accumulates condensation or water droplets on walls and door after cooking.
|
Condensation / Ventilation Issue | View Details |
| – |
Microwave clock and settings reset whenever the door is opened or closed.
|
Power Interruption from Door or Loose Connection | View Details |
| – |
Microwave display is dim, flickering, or some segments are missing, but the unit still heats.
|
Display Module / Control PCB Fault | View Details |
| – |
Microwave display is on but START button does nothing; no relay click, no fan, no light change.
|
Start Circuit / Relay Drive Fault | View Details |
| – |
Microwave door does not close properly; it feels loose or misaligned, and the unit may not start.
|
Door Hinge / Alignment Fault | View Details |
| – |
Microwave door will not open or is very hard to open after cooking.
|
Door Latch / Release Mechanism Fault | View Details |
| – |
Microwave emits sparks or arcing inside the cavity during cooking.
|
Cavity Arcing / Waveguide Contamination | View Details |
| – |
Microwave grill function does not heat, but normal microwave heating works.
|
Grill Element Circuit Failure | View Details |
| – |
Microwave has a strong burning or electrical smell during or after operation.
|
Overheating Component or Cavity Contamination | View Details |
| – |
Microwave interior light does not come on, but the unit heats and operates normally.
|
Cavity Lamp Failure | View Details |
| – |
Microwave interior light, fan, and turntable run when the door is closed, even without pressing START.
|
Door Switch / Monitor Circuit Miswiring or Failure | View Details |
| – |
Microwave interior paint is peeling or rust is visible inside the cavity.
|
Cavity Corrosion / Coating Failure | View Details |
| – |
Microwave is completely dead: no display, no lights, no response when buttons are pressed.
|
No Power – Primary Power Circuit Failure | View Details |
| – |
Microwave is very noisy during operation with rattling, scraping, or grinding sounds from the cavity area.
|
Turntable / Mechanical Drive Noise | View Details |
| – |
Microwave makes loud buzzing or humming noise during operation, louder than normal, sometimes with a burning smell.
|
High Voltage Component Overload or Short | View Details |
| – |
Microwave produces excessive vibration or rattling noises from the cabinet during operation.
|
Cabinet Vibration / Mounting Fault | View Details |
| – |
Microwave runs but does not heat food; turntable, light, and fan operate normally, but food remains cold.
|
No Heating – High Voltage System Failure | View Details |
| – |
Microwave runs but food heats unevenly; some areas are very hot while others are cold.
|
Uneven Heating / Turntable or Stirrer Fault | View Details |
| – |
Microwave runs for a few seconds then stops and returns to the clock without heating the food.
|
Intermittent Door Interlock or Thermal Protection Trip | View Details |
| – |
Microwave trips the household circuit breaker or blows the fuse when starting.
|
Short Circuit or Overcurrent on Startup | View Details |
| – |
Microwave turntable does not rotate, but the unit heats food (though unevenly).
|
Turntable Drive Failure | View Details |
No matching codes found
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