Proline
Proline Microwaves Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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dE
Microwave displays dE (door error) and will not start; door appears closed.
Door Not Detected as Closed
E1
Microwave beeps and will not start; display shows E1 immediately after pressing START.
Door Interlock Switch Failure
E10
Microwave display shows E10 and unit is completely unresponsive to keypad input.
Control PCB Failure or Firmware Corruption
E2
Microwave stops heating shortly after start and displays E2; fan and light may still operate.
Magnetron Overheat Protection Trip
E3
Microwave runs but does not heat; after several seconds E3 appears on the display.
Magnetron or High Voltage Circuit Failure
E4
Microwave display shows E4 and unit will not start; sometimes appears after a power surge or lightning storm.
Inverter or Power Supply Board Fault (Inverter Models)
E5
Microwave stops mid-cycle and displays E5; may be accompanied by a hot smell from the top or side vents.
Cavity Overheat or Cooling Failure
E6
Microwave display shows E6 and beeps; keypad and functions may be unresponsive or erratic.
Keypad or Control Panel Communication Error
E7
Microwave with grill or convection function shows E7 and will not start grill/convection modes.
Grill / Convection Temperature Sensor Fault
E8
Microwave with convection feature displays E8 when convection mode is selected; microwave-only mode may still work.
Convection Fan or Heater Circuit Failure
E9
Microwave shows E9 and will not start; sometimes occurs after the unit has been dropped or the door has been slammed.
Door Latch Mechanism or Monitor Switch Error
F1
Microwave beeps and displays F1; may occur at power-up or when pressing any key.
Control Board Key Input Error
F2
Microwave shows F2 and may run the fan unexpectedly or refuse to start a cook cycle.
Temperature Sensor or Thermostat Error
F3
Microwave displays F3 and may stop mid-cycle; often associated with grill or convection modes.
Overheat or Grill Thermostat Trip
F4
Microwave shows F4 and will not start; sometimes occurs after a door slam or impact.
Door Switch Circuit Error
F5
Microwave intermittently shuts off and displays F5; may reset after unplugging.
Power Relay or Control Board Fault
H97
Inverter-type Proline microwave stops heating and displays H97; fan and light may still run.
Inverter High Voltage Output Failure
H98
Microwave immediately stops when START is pressed and shows H98; no heating occurs.
Inverter / Magnetron Protection Trip
H99
Microwave intermittently stops heating and sometimes shows H99; may work again after cooling.
Intermittent Inverter Overheat or Overcurrent
LOC
Microwave display shows LOC or a lock icon; buttons do not respond except CANCEL.
Child Lock / Control Lock Activated
PF
Microwave shows PF (power failure) after an outage or flicker; clock resets.
Power Interruption Detected
SE
Microwave beeps continuously or intermittently and displays SE; some keys may appear to press themselves.
Shorted Keypad (Key Stuck Error)
Symptom
Microwave convection or grill fan is very noisy or rattling during operation.
Noisy Convection / Cooling Fan
Symptom
Microwave convection or grill mode does not heat, but standard microwave mode works.
Grill / Convection Heater Failure
Symptom
Microwave display is dim, flickering, or partially missing segments.
Display Module or Control Board Fault
Symptom
Microwave display is on but pressing START does nothing; timer may count down without any internal activity.
No Start – Door or Relay Control Fault
Symptom
Microwave does not start at all; display is blank and no lights or sounds when door is opened.
No Power – Primary Supply Failure
Symptom
Microwave door does not stay closed or pops open during operation.
Door Latch Retention Failure
Symptom
Microwave door will not open or is very hard to open after cooking.
Door Latch or Release Mechanism Jammed
Symptom
Microwave emits a loud pop and then stops heating, though lights and turntable may still work.
High Voltage Component Failure After Surge
Symptom
Microwave emits a strong burning or electrical smell during or after use.
Overheating Component or Arcing Damage
Symptom
Microwave heats but takes much longer than normal to cook food; uneven heating across dishes.
Reduced Microwave Output
Symptom
Microwave interior accumulates excessive condensation or water droplets during and after cooking.
Excessive Condensation / Poor Venting
Symptom
Microwave interior light does not come on, but unit heats and operates normally.
Cavity Lamp Failure
Symptom
Microwave interior paint is peeling, rust is visible, or there are dark burn marks on the cavity walls.
Cavity Coating Degradation
Symptom
Microwave keypad buttons do not respond or respond intermittently; display is on.
Keypad / Membrane Switch Failure
Symptom
Microwave light stays on and fan may run whenever the door is open; may be accompanied by a humming sound.
Door Switch or Control Logic Fault
Symptom
Microwave light, fan, and turntable run when the door is closed, even without pressing START.
Door Switches Miswired or Stuck Closed
Symptom
Microwave makes loud buzzing, humming, or crackling noises when heating.
Abnormal Noise – High Voltage or Mechanical Interference
Symptom
Microwave runs (light, fan, and turntable operate) but food does not heat at all.
No Heating – High Voltage System Failure
Symptom
Microwave trips the breaker or blows a fuse as soon as it is plugged in, even without pressing any buttons.
Line Side Short Circuit
Symptom
Microwave trips the household circuit breaker or blows a fuse when starting a cook cycle.
Short Circuit or Overcurrent on Start
Symptom
Microwave turntable does not rotate, but heating still occurs.
Turntable Drive Failure
Symptom
Visible sparks or arcing inside the microwave cavity during cooking.
Cavity Arcing / Waveguide Contamination
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| dE |
Microwave displays dE (door error) and will not start; door appears closed.
|
Door Not Detected as Closed | View Details |
| E1 |
Microwave beeps and will not start; display shows E1 immediately after pressing START.
|
Door Interlock Switch Failure | View Details |
| E10 |
Microwave display shows E10 and unit is completely unresponsive to keypad input.
|
Control PCB Failure or Firmware Corruption | View Details |
| E2 |
Microwave stops heating shortly after start and displays E2; fan and light may still operate.
|
Magnetron Overheat Protection Trip | View Details |
| E3 |
Microwave runs but does not heat; after several seconds E3 appears on the display.
|
Magnetron or High Voltage Circuit Failure | View Details |
| E4 |
Microwave display shows E4 and unit will not start; sometimes appears after a power surge or lightning storm.
|
Inverter or Power Supply Board Fault (Inverter Models) | View Details |
| E5 |
Microwave stops mid-cycle and displays E5; may be accompanied by a hot smell from the top or side vents.
|
Cavity Overheat or Cooling Failure | View Details |
| E6 |
Microwave display shows E6 and beeps; keypad and functions may be unresponsive or erratic.
|
Keypad or Control Panel Communication Error | View Details |
| E7 |
Microwave with grill or convection function shows E7 and will not start grill/convection modes.
|
Grill / Convection Temperature Sensor Fault | View Details |
| E8 |
Microwave with convection feature displays E8 when convection mode is selected; microwave-only mode may still work.
|
Convection Fan or Heater Circuit Failure | View Details |
| E9 |
Microwave shows E9 and will not start; sometimes occurs after the unit has been dropped or the door has been slammed.
|
Door Latch Mechanism or Monitor Switch Error | View Details |
| F1 |
Microwave beeps and displays F1; may occur at power-up or when pressing any key.
|
Control Board Key Input Error | View Details |
| F2 |
Microwave shows F2 and may run the fan unexpectedly or refuse to start a cook cycle.
|
Temperature Sensor or Thermostat Error | View Details |
| F3 |
Microwave displays F3 and may stop mid-cycle; often associated with grill or convection modes.
|
Overheat or Grill Thermostat Trip | View Details |
| F4 |
Microwave shows F4 and will not start; sometimes occurs after a door slam or impact.
|
Door Switch Circuit Error | View Details |
| F5 |
Microwave intermittently shuts off and displays F5; may reset after unplugging.
|
Power Relay or Control Board Fault | View Details |
| H97 |
Inverter-type Proline microwave stops heating and displays H97; fan and light may still run.
|
Inverter High Voltage Output Failure | View Details |
| H98 |
Microwave immediately stops when START is pressed and shows H98; no heating occurs.
|
Inverter / Magnetron Protection Trip | View Details |
| H99 |
Microwave intermittently stops heating and sometimes shows H99; may work again after cooling.
|
Intermittent Inverter Overheat or Overcurrent | View Details |
| LOC |
Microwave display shows LOC or a lock icon; buttons do not respond except CANCEL.
|
Child Lock / Control Lock Activated | View Details |
| PF |
Microwave shows PF (power failure) after an outage or flicker; clock resets.
|
Power Interruption Detected | View Details |
| SE |
Microwave beeps continuously or intermittently and displays SE; some keys may appear to press themselves.
|
Shorted Keypad (Key Stuck Error) | View Details |
| – |
Microwave convection or grill fan is very noisy or rattling during operation.
|
Noisy Convection / Cooling Fan | View Details |
| – |
Microwave convection or grill mode does not heat, but standard microwave mode works.
|
Grill / Convection Heater Failure | View Details |
| – |
Microwave display is dim, flickering, or partially missing segments.
|
Display Module or Control Board Fault | View Details |
| – |
Microwave display is on but pressing START does nothing; timer may count down without any internal activity.
|
No Start – Door or Relay Control Fault | View Details |
| – |
Microwave does not start at all; display is blank and no lights or sounds when door is opened.
|
No Power – Primary Supply Failure | View Details |
| – |
Microwave door does not stay closed or pops open during operation.
|
Door Latch Retention Failure | View Details |
| – |
Microwave door will not open or is very hard to open after cooking.
|
Door Latch or Release Mechanism Jammed | View Details |
| – |
Microwave emits a loud pop and then stops heating, though lights and turntable may still work.
|
High Voltage Component Failure After Surge | View Details |
| – |
Microwave emits a strong burning or electrical smell during or after use.
|
Overheating Component or Arcing Damage | View Details |
| – |
Microwave heats but takes much longer than normal to cook food; uneven heating across dishes.
|
Reduced Microwave Output | View Details |
| – |
Microwave interior accumulates excessive condensation or water droplets during and after cooking.
|
Excessive Condensation / Poor Venting | View Details |
| – |
Microwave interior light does not come on, but unit heats and operates normally.
|
Cavity Lamp Failure | View Details |
| – |
Microwave interior paint is peeling, rust is visible, or there are dark burn marks on the cavity walls.
|
Cavity Coating Degradation | View Details |
| – |
Microwave keypad buttons do not respond or respond intermittently; display is on.
|
Keypad / Membrane Switch Failure | View Details |
| – |
Microwave light stays on and fan may run whenever the door is open; may be accompanied by a humming sound.
|
Door Switch or Control Logic Fault | View Details |
| – |
Microwave light, fan, and turntable run when the door is closed, even without pressing START.
|
Door Switches Miswired or Stuck Closed | View Details |
| – |
Microwave makes loud buzzing, humming, or crackling noises when heating.
|
Abnormal Noise – High Voltage or Mechanical Interference | View Details |
| – |
Microwave runs (light, fan, and turntable operate) but food does not heat at all.
|
No Heating – High Voltage System Failure | View Details |
| – |
Microwave trips the breaker or blows a fuse as soon as it is plugged in, even without pressing any buttons.
|
Line Side Short Circuit | View Details |
| – |
Microwave trips the household circuit breaker or blows a fuse when starting a cook cycle.
|
Short Circuit or Overcurrent on Start | View Details |
| – |
Microwave turntable does not rotate, but heating still occurs.
|
Turntable Drive Failure | View Details |
| – |
Visible sparks or arcing inside the microwave cavity during cooking.
|
Cavity Arcing / Waveguide Contamination | View Details |
No matching codes found
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