MasterChef
MasterChef 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 will not start; display works but pressing START does nothing or beeps three times and shows E01.
Door Interlock Safety Circuit Fault
E02
Microwave stops heating shortly after start and displays E02 or shuts down with an overheat warning.
Magnetron Overheat / Cooling System Fault
E03
Microwave runs but does not heat food; display shows E03 after a few seconds of operation.
Magnetron / High Voltage Circuit Failure
E04
Microwave display shows E04 and unit will not start; interior light and fan do not come on.
Control Board Power Supply Fault
E05
Microwave shows E05 and stops heating; fan may continue briefly before shutting off.
Cavity Temperature Sensor / Thermistor Fault
E06
Microwave beeps and displays E06 when trying to start; turntable and light do not activate.
Keypad / Touch Control Panel Failure
E07
Microwave displays E07 and will not start; sometimes accompanied by a relay click and immediate stop.
Relay Drive / Power Relay Fault
E08
Microwave shows E08 and stops mid-cycle; interior light and fan shut off abruptly.
Door Open Detection During Operation
E09
Microwave displays E09 and will not heat; fan and light may run normally.
Inverter Power Supply Fault (Inverter Models Only)
E10
Microwave shows E10 and beeps; turntable may not rotate and fan may not start.
Turntable Motor / Rotation Sensor Fault
E11
Microwave displays E11 and will not start; sometimes occurs after a power outage or surge.
EEPROM / Control Memory Error
E12
Microwave shows E12 when using sensor cook or reheat functions; standard timed cooking may still work.
Humidity / Steam Sensor Fault
E13
Microwave displays E13 and beeps continuously until cleared; may occur when setting the clock or timer.
Clock / Timer Circuit Error
E14
Microwave shows E14 and will not start; interior light may come on but no further operation.
Child Lock / Control Lock Malfunction
E15
Microwave displays E15 and stops; may occur when using grill or convection functions on combo models.
Grill / Convection Overheat Protection Trip
E16
Microwave shows E16 and will not start; fan may run briefly then stop.
Cooling Fan Feedback / Tachometer Error (Convection Models)
E17
Microwave displays E17 and beeps; occurs when using weight or auto-defrost functions.
Weight Sensor / Load Detection Error (If Equipped)
E18
Microwave shows E18 and will not start; often after a door slam or physical shock.
Shock / Impact Detected – Safety Interlock Error
E19
Microwave displays E19 and stops; may coincide with interior light flickering.
Low Line Voltage / Power Input Error
E20
Microwave shows E20 and beeps; occurs when starting grill or convection on combo models.
Heating Element Circuit Fault (Grill/Convection)
Symptom
Microwave cavity has excessive condensation or water droplets after cooking.
Condensation / Ventilation Issue
Symptom
Microwave display is dim, flickering, or partially unreadable.
Display Module / Power Supply Degradation
Symptom
Microwave display works but pressing START does nothing; no relay click, no fan, no light.
Start Circuit / Control Input Failure
Symptom
Microwave does not start at all; display is blank and no lights or sounds when door is opened.
No Power – Primary Power Circuit Failure
Symptom
Microwave door will not open or is very hard to open after cooking.
Door Latch / Release Mechanism Failure
Symptom
Microwave door will not stay closed or pops open during operation.
Door Latch Retention Failure
Symptom
Microwave emits a strong burning or electrical smell during or after use.
Overheating Component or Wiring Insulation Failure
Symptom
Microwave interior light does not come on, but 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.
Stuck Relay or Shorted Control Circuit
Symptom
Microwave keypad buttons are unresponsive or only some keys work.
Keypad Matrix Failure
Symptom
Microwave light and fan run but the turntable does not rotate; food heats unevenly.
Turntable Drive Failure
Symptom
Microwave over-the-range cooktop light does not work or flickers.
Cooktop Illumination Failure (OTR Models)
Symptom
Microwave over-the-range vent fan does not run or runs only at one speed.
Ventilation Fan Control Failure (OTR Models)
Symptom
Microwave produces sparks or arcing inside the cavity during cooking.
Cavity Arcing / Waveguide Contamination
Symptom
Microwave randomly resets, clock clears, or display turns off and back on during use.
Intermittent Power or Control Reset
Symptom
Microwave runs (light on, fan and turntable operating) but food does not heat at all.
No Heat – High Voltage System Failure
Symptom
Microwave runs but makes loud buzzing, humming, or grinding noises during operation.
Abnormal Operating Noise
Symptom
Microwave trips the household circuit breaker or blows a fuse when starting.
Short Circuit or Excessive Current Draw
Symptom
Microwave turntable rotates intermittently or jerks during operation.
Intermittent Turntable Drive
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Microwave will not start; display works but pressing START does nothing or beeps three times and shows E01.
|
Door Interlock Safety Circuit Fault | View Details |
| E02 |
Microwave stops heating shortly after start and displays E02 or shuts down with an overheat warning.
|
Magnetron Overheat / Cooling System Fault | View Details |
| E03 |
Microwave runs but does not heat food; display shows E03 after a few seconds of operation.
|
Magnetron / High Voltage Circuit Failure | View Details |
| E04 |
Microwave display shows E04 and unit will not start; interior light and fan do not come on.
|
Control Board Power Supply Fault | View Details |
| E05 |
Microwave shows E05 and stops heating; fan may continue briefly before shutting off.
|
Cavity Temperature Sensor / Thermistor Fault | View Details |
| E06 |
Microwave beeps and displays E06 when trying to start; turntable and light do not activate.
|
Keypad / Touch Control Panel Failure | View Details |
| E07 |
Microwave displays E07 and will not start; sometimes accompanied by a relay click and immediate stop.
|
Relay Drive / Power Relay Fault | View Details |
| E08 |
Microwave shows E08 and stops mid-cycle; interior light and fan shut off abruptly.
|
Door Open Detection During Operation | View Details |
| E09 |
Microwave displays E09 and will not heat; fan and light may run normally.
|
Inverter Power Supply Fault (Inverter Models Only) | View Details |
| E10 |
Microwave shows E10 and beeps; turntable may not rotate and fan may not start.
|
Turntable Motor / Rotation Sensor Fault | View Details |
| E11 |
Microwave displays E11 and will not start; sometimes occurs after a power outage or surge.
|
EEPROM / Control Memory Error | View Details |
| E12 |
Microwave shows E12 when using sensor cook or reheat functions; standard timed cooking may still work.
|
Humidity / Steam Sensor Fault | View Details |
| E13 |
Microwave displays E13 and beeps continuously until cleared; may occur when setting the clock or timer.
|
Clock / Timer Circuit Error | View Details |
| E14 |
Microwave shows E14 and will not start; interior light may come on but no further operation.
|
Child Lock / Control Lock Malfunction | View Details |
| E15 |
Microwave displays E15 and stops; may occur when using grill or convection functions on combo models.
|
Grill / Convection Overheat Protection Trip | View Details |
| E16 |
Microwave shows E16 and will not start; fan may run briefly then stop.
|
Cooling Fan Feedback / Tachometer Error (Convection Models) | View Details |
| E17 |
Microwave displays E17 and beeps; occurs when using weight or auto-defrost functions.
|
Weight Sensor / Load Detection Error (If Equipped) | View Details |
| E18 |
Microwave shows E18 and will not start; often after a door slam or physical shock.
|
Shock / Impact Detected – Safety Interlock Error | View Details |
| E19 |
Microwave displays E19 and stops; may coincide with interior light flickering.
|
Low Line Voltage / Power Input Error | View Details |
| E20 |
Microwave shows E20 and beeps; occurs when starting grill or convection on combo models.
|
Heating Element Circuit Fault (Grill/Convection) | View Details |
| – |
Microwave cavity has excessive condensation or water droplets after cooking.
|
Condensation / Ventilation Issue | View Details |
| – |
Microwave display is dim, flickering, or partially unreadable.
|
Display Module / Power Supply Degradation | View Details |
| – |
Microwave display works but pressing START does nothing; no relay click, no fan, no light.
|
Start Circuit / Control Input Failure | View Details |
| – |
Microwave does not start at all; display is blank and no lights or sounds when door is opened.
|
No Power – Primary Power Circuit Failure | View Details |
| – |
Microwave door will not open or is very hard to open after cooking.
|
Door Latch / Release Mechanism Failure | View Details |
| – |
Microwave door will not stay closed or pops open during operation.
|
Door Latch Retention Failure | View Details |
| – |
Microwave emits a strong burning or electrical smell during or after use.
|
Overheating Component or Wiring Insulation Failure | View Details |
| – |
Microwave interior light does not come on, but 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.
|
Stuck Relay or Shorted Control Circuit | View Details |
| – |
Microwave keypad buttons are unresponsive or only some keys work.
|
Keypad Matrix Failure | View Details |
| – |
Microwave light and fan run but the turntable does not rotate; food heats unevenly.
|
Turntable Drive Failure | View Details |
| – |
Microwave over-the-range cooktop light does not work or flickers.
|
Cooktop Illumination Failure (OTR Models) | View Details |
| – |
Microwave over-the-range vent fan does not run or runs only at one speed.
|
Ventilation Fan Control Failure (OTR Models) | View Details |
| – |
Microwave produces sparks or arcing inside the cavity during cooking.
|
Cavity Arcing / Waveguide Contamination | View Details |
| – |
Microwave randomly resets, clock clears, or display turns off and back on during use.
|
Intermittent Power or Control Reset | View Details |
| – |
Microwave runs (light on, fan and turntable operating) but food does not heat at all.
|
No Heat – High Voltage System Failure | View Details |
| – |
Microwave runs but makes loud buzzing, humming, or grinding noises during operation.
|
Abnormal Operating Noise | View Details |
| – |
Microwave trips the household circuit breaker or blows a fuse when starting.
|
Short Circuit or Excessive Current Draw | View Details |
| – |
Microwave turntable rotates intermittently or jerks during operation.
|
Intermittent Turntable Drive | View Details |
No matching codes found
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