JennAir 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 beeps and displays F1, often immediately at power-up or when trying to start a cook cycle.
Keypad or Control Board Failure
F10
JennAir microwave displays F10, often on convection or combination models, and may not heat properly in convection mode.
Convection Temperature Sensor or Overheat Error
F11
Microwave shows F11 and may not respond to keypad or may lock up during operation.
Keypad-to-Control Communication Error
F12
JennAir microwave displays F12, often on models with inverter technology, and will not heat.
Inverter Communication or Inverter Failure
F13
Microwave shows F13 and may stop heating or shut down shortly after starting.
Magnetron Overheat or Thermal Protection Error
F14
JennAir microwave displays F14 and will not start; often associated with door or latch issues.
Door Switch or Latch Error
F15
Microwave shows F15 and may not heat or may shut down when starting a cook cycle.
High-Voltage System Error
F16
JennAir microwave displays F16, often on models with turntable sensors, and the turntable may not rotate.
Turntable Motor or Sensor Error
F17
Microwave shows F17 and may not start or may stop when using sensor cook features.
Sensor Cook Circuit Error
F18
JennAir microwave displays F18 and may not accept input or may randomly reset.
Low-Voltage Power Supply Error
F19
Microwave shows F19 and may not heat or may shut down when starting a high-power cook cycle.
Current Sense or Overcurrent Error
F2
Microwave displays F2 and may beep continuously; often associated with stuck or shorted keypad buttons.
Stuck Key or Shorted Keypad Circuit
F20
JennAir microwave displays F20 and may not start or may lock up after setting a cook time.
EEPROM or Memory Error
F3
Microwave shows F3 and will not start or stops mid-cycle; may be accompanied by erratic temperature sensing in convection models.
Oven Temperature Sensor or Thermistor Failure
F4
JennAir microwave displays F4 and will not run; often related to humidity or temperature sensing.
Humidity Sensor or Cavity Thermistor Error
F5
Microwave shows F5 and will not start; may occur after a power surge or during convection use.
Relay or Control Board Failure
F6
JennAir microwave displays F6 and may shut down or refuse to start; sometimes intermittent.
Communication Error Between Control Boards
F7
Microwave shows F7 and may not respond to keypad inputs or may start/stop erratically.
Microprocessor or Control Logic Failure
F8
JennAir microwave displays F8, often associated with cooling or ventilation problems; unit may shut down during use.
Cooling Fan or Ventilation Error
F9
Microwave shows F9 and may shut off or refuse to start; often related to power or line voltage issues.
Line Voltage or Power Supply Error
Symptom
Control panel buttons are unresponsive or require very hard pressing; some keys work, others do not.
Membrane Keypad Wear or Failure
Symptom
Display is dim, flickering, or partially missing segments, but microwave still operates.
Display Module or Control Board Failure
Symptom
Microwave clock resets or display blanks out intermittently, especially when starting a cook cycle.
Power Interruption or Control Board Power Supply Issue
Symptom
Microwave completely dead; no display, no lights, no response when plugged in.
No Power – Primary Power Circuit Failure
Symptom
Microwave convection or grill function does not heat, but standard microwave heating works.
Convection/Grill Heating Failure
Symptom
Microwave display and functions work, but the interior light, fan, and turntable do not come on when starting a cook cycle.
Cook Relay or Interlock Power Failure
Symptom
Microwave door will not open or is difficult to open; latch feels stuck.
Door Latch Mechanism Failure
Symptom
Microwave door will not stay closed or pops open during operation.
Door Alignment or Latch Retention Failure
Symptom
Microwave emits a burning smell, smoke, or arcing (sparks) inside the cavity during use.
Arcing or Cavity Damage
Symptom
Microwave exhaust fan on over-the-range JennAir unit does not run or only works on some speeds.
Exhaust Blower Motor or Speed Control Failure
Symptom
Microwave interior accumulates condensation or water droplets on walls and door after use.
Excess Moisture / Ventilation Issue
Symptom
Microwave interior light does not come on, but unit heats and otherwise works normally.
Cavity Light Circuit Failure
Symptom
Microwave keypad beeps randomly or starts functions by itself without pressing buttons.
Keypad Short or Moisture Intrusion
Symptom
Microwave light, fan, and turntable come on when the door is closed, even without pressing Start.
Door Switch or Relay Stuck Closed
Symptom
Microwave makes loud humming, buzzing, or grinding noises during operation, louder than normal fan noise.
Excessive Noise – Mechanical or High-Voltage Component
Symptom
Microwave produces a rattling or vibrating noise, especially at higher fan speeds or when the turntable rotates.
Vibration or Loose Component
Symptom
Microwave runs but does not heat food; turntable and light work, fan runs, but items remain cold.
No Heat – High-Voltage System Failure
Symptom
Microwave runs for a few seconds then shuts off and may restart or require resetting.
Overheat or Door Interlock Interruption
Symptom
Microwave trips the household circuit breaker or blows a fuse when starting a cook cycle.
Short Circuit or Overcurrent on Startup
Symptom
Microwave will not start at all; display is on and accepts input, but pressing Start does nothing.
Start Circuit or Door Interlock Failure
Symptom
Turntable does not rotate, but microwave heats and otherwise functions normally.
Turntable Drive Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| F1 |
Microwave beeps and displays F1, often immediately at power-up or when trying to start a cook cycle.
|
Keypad or Control Board Failure | View Details |
| F10 |
JennAir microwave displays F10, often on convection or combination models, and may not heat properly in convection mode.
|
Convection Temperature Sensor or Overheat Error | View Details |
| F11 |
Microwave shows F11 and may not respond to keypad or may lock up during operation.
|
Keypad-to-Control Communication Error | View Details |
| F12 |
JennAir microwave displays F12, often on models with inverter technology, and will not heat.
|
Inverter Communication or Inverter Failure | View Details |
| F13 |
Microwave shows F13 and may stop heating or shut down shortly after starting.
|
Magnetron Overheat or Thermal Protection Error | View Details |
| F14 |
JennAir microwave displays F14 and will not start; often associated with door or latch issues.
|
Door Switch or Latch Error | View Details |
| F15 |
Microwave shows F15 and may not heat or may shut down when starting a cook cycle.
|
High-Voltage System Error | View Details |
| F16 |
JennAir microwave displays F16, often on models with turntable sensors, and the turntable may not rotate.
|
Turntable Motor or Sensor Error | View Details |
| F17 |
Microwave shows F17 and may not start or may stop when using sensor cook features.
|
Sensor Cook Circuit Error | View Details |
| F18 |
JennAir microwave displays F18 and may not accept input or may randomly reset.
|
Low-Voltage Power Supply Error | View Details |
| F19 |
Microwave shows F19 and may not heat or may shut down when starting a high-power cook cycle.
|
Current Sense or Overcurrent Error | View Details |
| F2 |
Microwave displays F2 and may beep continuously; often associated with stuck or shorted keypad buttons.
|
Stuck Key or Shorted Keypad Circuit | View Details |
| F20 |
JennAir microwave displays F20 and may not start or may lock up after setting a cook time.
|
EEPROM or Memory Error | View Details |
| F3 |
Microwave shows F3 and will not start or stops mid-cycle; may be accompanied by erratic temperature sensing in convection models.
|
Oven Temperature Sensor or Thermistor Failure | View Details |
| F4 |
JennAir microwave displays F4 and will not run; often related to humidity or temperature sensing.
|
Humidity Sensor or Cavity Thermistor Error | View Details |
| F5 |
Microwave shows F5 and will not start; may occur after a power surge or during convection use.
|
Relay or Control Board Failure | View Details |
| F6 |
JennAir microwave displays F6 and may shut down or refuse to start; sometimes intermittent.
|
Communication Error Between Control Boards | View Details |
| F7 |
Microwave shows F7 and may not respond to keypad inputs or may start/stop erratically.
|
Microprocessor or Control Logic Failure | View Details |
| F8 |
JennAir microwave displays F8, often associated with cooling or ventilation problems; unit may shut down during use.
|
Cooling Fan or Ventilation Error | View Details |
| F9 |
Microwave shows F9 and may shut off or refuse to start; often related to power or line voltage issues.
|
Line Voltage or Power Supply Error | View Details |
| – |
Control panel buttons are unresponsive or require very hard pressing; some keys work, others do not.
|
Membrane Keypad Wear or Failure | View Details |
| – |
Display is dim, flickering, or partially missing segments, but microwave still operates.
|
Display Module or Control Board Failure | View Details |
| – |
Microwave clock resets or display blanks out intermittently, especially when starting a cook cycle.
|
Power Interruption or Control Board Power Supply Issue | View Details |
| – |
Microwave completely dead; no display, no lights, no response when plugged in.
|
No Power – Primary Power Circuit Failure | View Details |
| – |
Microwave convection or grill function does not heat, but standard microwave heating works.
|
Convection/Grill Heating Failure | View Details |
| – |
Microwave display and functions work, but the interior light, fan, and turntable do not come on when starting a cook cycle.
|
Cook Relay or Interlock Power Failure | View Details |
| – |
Microwave door will not open or is difficult to open; latch feels stuck.
|
Door Latch Mechanism Failure | View Details |
| – |
Microwave door will not stay closed or pops open during operation.
|
Door Alignment or Latch Retention Failure | View Details |
| – |
Microwave emits a burning smell, smoke, or arcing (sparks) inside the cavity during use.
|
Arcing or Cavity Damage | View Details |
| – |
Microwave exhaust fan on over-the-range JennAir unit does not run or only works on some speeds.
|
Exhaust Blower Motor or Speed Control Failure | View Details |
| – |
Microwave interior accumulates condensation or water droplets on walls and door after use.
|
Excess Moisture / Ventilation Issue | View Details |
| – |
Microwave interior light does not come on, but unit heats and otherwise works normally.
|
Cavity Light Circuit Failure | View Details |
| – |
Microwave keypad beeps randomly or starts functions by itself without pressing buttons.
|
Keypad Short or Moisture Intrusion | View Details |
| – |
Microwave light, fan, and turntable come on when the door is closed, even without pressing Start.
|
Door Switch or Relay Stuck Closed | View Details |
| – |
Microwave makes loud humming, buzzing, or grinding noises during operation, louder than normal fan noise.
|
Excessive Noise – Mechanical or High-Voltage Component | View Details |
| – |
Microwave produces a rattling or vibrating noise, especially at higher fan speeds or when the turntable rotates.
|
Vibration or Loose Component | View Details |
| – |
Microwave runs but does not heat food; turntable and light work, fan runs, but items remain cold.
|
No Heat – High-Voltage System Failure | View Details |
| – |
Microwave runs for a few seconds then shuts off and may restart or require resetting.
|
Overheat or Door Interlock Interruption | View Details |
| – |
Microwave trips the household circuit breaker or blows a fuse when starting a cook cycle.
|
Short Circuit or Overcurrent on Startup | View Details |
| – |
Microwave will not start at all; display is on and accepts input, but pressing Start does nothing.
|
Start Circuit or Door Interlock Failure | View Details |
| – |
Turntable does not rotate, but microwave heats and otherwise functions normally.
|
Turntable Drive Failure | View Details |
No matching codes found
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