Emerson
Emerson Microwaves Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E1
Microwave will not start; display shows E1 immediately after pressing START.
Door Switch Interlock Failure
E2
Microwave stops heating shortly after start and displays E2 on the control panel.
Magnetron Overheat or Thermal Cutout Trip
E3
Microwave runs but does not heat; display shows E3 after a few seconds of operation.
High Voltage System Failure
E4
Microwave beeps and displays E4; unit will not start a cooking cycle.
Humidity / Steam Sensor Error
E5
Microwave display shows E5 and the unit will not heat or start.
Inverter or Power Supply Error (Inverter Models)
E6
Microwave shows E6 and beeps repeatedly; keypad may be unresponsive or partially responsive.
Keypad / Membrane Switch Failure
E7
Microwave displays E7 and will not start; sometimes occurs after a power surge or outage.
Control Board Communication or EEPROM Error
E8
Microwave shows E8 and stops mid-cycle, often during longer cooking times.
Cavity Overheat / Thermal Cutout Trip
E9
Microwave displays E9 and will not run; interior light and fan may still operate when door is opened.
Door Sensing / Monitor Switch Error
F1
Microwave displays F1 and may beep continuously; unit may not respond to keypad inputs.
Control Board Internal Fault
F2
Microwave shows F2 and may stop mid-cycle; keypad may still respond.
Temperature Sensor / Thermistor Error
F3
Microwave displays F3 and will not start; may occur immediately on power-up.
Shorted Keypad or Key Line Error
F4
Microwave shows F4 and stops heating; fan and light may still operate.
Cavity or Magnetron Thermal Cutout Open
F5
Microwave displays F5 and may not respond to some keypad commands.
Keypad and Control Board Mismatch or Communication Error
F6
Microwave shows F6 and will not start; may be accompanied by relay clicking sounds.
Relay or Power Control Error
F7
Microwave displays F7 and may start or stop unexpectedly, or not start at all.
Door Sense / Interlock Logic Error
F8
Microwave shows F8 and may shut down during operation, especially at high power.
Line Voltage or Current Sense Error
F9
Microwave displays F9 and will not start; may occur after long use or overheating.
Exhaust Fan / Cooling System Error
H0
Microwave displays H0 or HO and does not heat; fan may run briefly then stop.
High Voltage Overcurrent / Magnetron Protection
PF
Microwave display shows PF and beeps after a power interruption; clock is reset.
Power Failure / Line Voltage Interruption
SE
Microwave beeps continuously and displays SE; some keys may activate by themselves.
Shorted Keypad / Stuck Key Error
Symptom
Microwave cavity fills with condensation or moisture; water drips from door or vents.
Excessive Condensation / Poor Ventilation
Symptom
Microwave clock resets randomly or display blinks off and on.
Intermittent Power or Control Board Issue
Symptom
Microwave completely dead – no display, no light, no response when plugged in.
No Power – Primary Power Circuit Failure
Symptom
Microwave display is dim, flickering, or partially missing segments.
Display / VFD / LED Module Failure
Symptom
Microwave display works but START button does nothing; oven will not run.
No Start – Keypad or Door Interlock Issue
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 Engagement Failure
Symptom
Microwave emits a burning or electrical smell during or after use.
Overheating Component or Electrical Arcing
Symptom
Microwave exhaust fan does not run or runs only at one speed on an over-the-range model.
Exhaust Fan Motor or Control Failure
Symptom
Microwave fan runs loudly or vibrates excessively during operation.
Cooling or Exhaust Fan Imbalance
Symptom
Microwave interior light does not come on, but unit heats and runs normally.
Cavity Lamp Failure
Symptom
Microwave interior shows sparks or arcing during cooking.
Cavity Arcing / Waveguide Damage
Symptom
Microwave keypad buttons are unresponsive or require very hard presses.
Worn Membrane Keypad
Symptom
Microwave light, fan, or turntable runs when the door is open, or unit attempts to heat with door open.
Door Interlock Safety Failure
Symptom
Microwave makes a rattling, grinding, or scraping noise when the turntable rotates.
Turntable Mechanical Noise
Symptom
Microwave makes loud buzzing or humming noise while running, louder than normal, sometimes accompanied by a burning smell.
Noisy High Voltage Component or Magnetron
Symptom
Microwave runs (light on, fan and turntable operate) but food does not heat.
No Heat – High Voltage System Failure
Symptom
Microwave runs but time on display does not count down correctly or stops intermittently.
Control Timing / Relay Fault
Symptom
Microwave trips the household circuit breaker or blows fuses when starting.
Overcurrent / Short Circuit
Symptom
Microwave turntable does not rotate, but heating and other functions work.
Turntable Drive Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Microwave will not start; display shows E1 immediately after pressing START.
|
Door Switch Interlock Failure | View Details |
| E2 |
Microwave stops heating shortly after start and displays E2 on the control panel.
|
Magnetron Overheat or Thermal Cutout Trip | View Details |
| E3 |
Microwave runs but does not heat; display shows E3 after a few seconds of operation.
|
High Voltage System Failure | View Details |
| E4 |
Microwave beeps and displays E4; unit will not start a cooking cycle.
|
Humidity / Steam Sensor Error | View Details |
| E5 |
Microwave display shows E5 and the unit will not heat or start.
|
Inverter or Power Supply Error (Inverter Models) | View Details |
| E6 |
Microwave shows E6 and beeps repeatedly; keypad may be unresponsive or partially responsive.
|
Keypad / Membrane Switch Failure | View Details |
| E7 |
Microwave displays E7 and will not start; sometimes occurs after a power surge or outage.
|
Control Board Communication or EEPROM Error | View Details |
| E8 |
Microwave shows E8 and stops mid-cycle, often during longer cooking times.
|
Cavity Overheat / Thermal Cutout Trip | View Details |
| E9 |
Microwave displays E9 and will not run; interior light and fan may still operate when door is opened.
|
Door Sensing / Monitor Switch Error | View Details |
| F1 |
Microwave displays F1 and may beep continuously; unit may not respond to keypad inputs.
|
Control Board Internal Fault | View Details |
| F2 |
Microwave shows F2 and may stop mid-cycle; keypad may still respond.
|
Temperature Sensor / Thermistor Error | View Details |
| F3 |
Microwave displays F3 and will not start; may occur immediately on power-up.
|
Shorted Keypad or Key Line Error | View Details |
| F4 |
Microwave shows F4 and stops heating; fan and light may still operate.
|
Cavity or Magnetron Thermal Cutout Open | View Details |
| F5 |
Microwave displays F5 and may not respond to some keypad commands.
|
Keypad and Control Board Mismatch or Communication Error | View Details |
| F6 |
Microwave shows F6 and will not start; may be accompanied by relay clicking sounds.
|
Relay or Power Control Error | View Details |
| F7 |
Microwave displays F7 and may start or stop unexpectedly, or not start at all.
|
Door Sense / Interlock Logic Error | View Details |
| F8 |
Microwave shows F8 and may shut down during operation, especially at high power.
|
Line Voltage or Current Sense Error | View Details |
| F9 |
Microwave displays F9 and will not start; may occur after long use or overheating.
|
Exhaust Fan / Cooling System Error | View Details |
| H0 |
Microwave displays H0 or HO and does not heat; fan may run briefly then stop.
|
High Voltage Overcurrent / Magnetron Protection | View Details |
| PF |
Microwave display shows PF and beeps after a power interruption; clock is reset.
|
Power Failure / Line Voltage Interruption | View Details |
| SE |
Microwave beeps continuously and displays SE; some keys may activate by themselves.
|
Shorted Keypad / Stuck Key Error | View Details |
| – |
Microwave cavity fills with condensation or moisture; water drips from door or vents.
|
Excessive Condensation / Poor Ventilation | View Details |
| – |
Microwave clock resets randomly or display blinks off and on.
|
Intermittent Power or Control Board Issue | View Details |
| – |
Microwave completely dead – no display, no light, no response when plugged in.
|
No Power – Primary Power Circuit Failure | View Details |
| – |
Microwave display is dim, flickering, or partially missing segments.
|
Display / VFD / LED Module Failure | View Details |
| – |
Microwave display works but START button does nothing; oven will not run.
|
No Start – Keypad or Door Interlock Issue | 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 Engagement Failure | View Details |
| – |
Microwave emits a burning or electrical smell during or after use.
|
Overheating Component or Electrical Arcing | View Details |
| – |
Microwave exhaust fan does not run or runs only at one speed on an over-the-range model.
|
Exhaust Fan Motor or Control Failure | View Details |
| – |
Microwave fan runs loudly or vibrates excessively during operation.
|
Cooling or Exhaust Fan Imbalance | View Details |
| – |
Microwave interior light does not come on, but unit heats and runs normally.
|
Cavity Lamp Failure | View Details |
| – |
Microwave interior shows sparks or arcing during cooking.
|
Cavity Arcing / Waveguide Damage | View Details |
| – |
Microwave keypad buttons are unresponsive or require very hard presses.
|
Worn Membrane Keypad | View Details |
| – |
Microwave light, fan, or turntable runs when the door is open, or unit attempts to heat with door open.
|
Door Interlock Safety Failure | View Details |
| – |
Microwave makes a rattling, grinding, or scraping noise when the turntable rotates.
|
Turntable Mechanical Noise | View Details |
| – |
Microwave makes loud buzzing or humming noise while running, louder than normal, sometimes accompanied by a burning smell.
|
Noisy High Voltage Component or Magnetron | View Details |
| – |
Microwave runs (light on, fan and turntable operate) but food does not heat.
|
No Heat – High Voltage System Failure | View Details |
| – |
Microwave runs but time on display does not count down correctly or stops intermittently.
|
Control Timing / Relay Fault | View Details |
| – |
Microwave trips the household circuit breaker or blows fuses when starting.
|
Overcurrent / Short Circuit | View Details |
| – |
Microwave turntable does not rotate, but heating and other functions work.
|
Turntable Drive Failure | View Details |
No matching codes found
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