Bosch microwave troubleshooting

The largest home appliances maker in the EU, Bosch was set up in 1967. Its product range is very varied and includes microwave ovens known for their reliability and high quality.
However, even these appliances sometimes experience problems and need repair. If this is the case with your Bosch microwave oven, refer to the chart below for an easy-to-understand troubleshooting tip.

Bosch BL series microwave troubleshooting

QUESTIONSUGGESTED SOLUTIONS
Element cycles on the highest settingThis is normal.The temperature limiter operates automatically to protect the glass ceramic surface from extreme high temperature damage.
Element cycles more than usual- Pan base is warped and not making full contact with the heating surface.
- Base diameter of pan is too small for the size of the element.
- Pan ingredients have boiled dry.
- Material of pan is a poor heat conductor; heat transfers too slowly
- Element turned on without a pan in place. (CET Models or CEP with Zone SMART turned off.))
A slight odor is noticeable when an element is turned onIt is normal and will disappear after several uses.
Flashing control lightsSignals an incomplete setting; requires another action. For example, the flashing light rings require touching a numbered heat setting.
Cooktop controls will not turn on- Control panel is LOCKED. Touch and hold Panel Lock until the light turns off.
- Check the power source to see if a fuse has blown or if the circuit breaker tripped.
The cooktop has switched itself offThe Power Pad or Element Pad was unintentionally touched. Reset the control.
Replacement razor blades for the scraperThe scraper is packaged with single edge, stainless steel blades. Use a standard single-edge blade for replacement.

Bosch EN series microwave troubleshooting

Bosch stopped production of the EN series microwaves several years ago.
One of the most popular models in this range was Bosch EN 60705. In comparison with the state-of-the-art models that are manufactured by the German company today, it was a rather simple microwave with a limited number of functions. Yet it could cook a variety of dishes, warm up or defrost products.

ProblemPossible causeRemedial action/notes
The appliance does not work.The plug is not plugged into
the mains.
Plug it in.
Power cut.Check whether the kitchen light
switches on.
Blown fuse.Look in the fuse box to make
sure that the fuse for the
appliance is OK.
Operating error.Switch off the circuit breaker in
the fuse box. After approx.
10 seconds switch it on again.
The appliance is not in operation.
A cooking time appears in the display.
The Screenshot (4) button was not pressed after the setting had been made.Press the Screenshot (4) button or switch
the appliance off.
The microwave does not switch on.
The door is not properly closed. Check whether leftover food or a foreign object is trapped in the door.
The Screenshot (4) button was not pressed.
Press the Screenshot (4) button.
It takes longer than before for the
food to heat up.
The microwave power setting is too low.Select a higher microwave power setting.
You have placed a larger amount of food than normal in the appliance.Double the amount = almost double the cooking time,
A signal sounds. The two dots in the display are flashing.The appliance is in demonstration mode.1. Press the 1I3 button.
2. Press and hold the button for 3 seconds.
The demonstration mode is deactivated.
The appliance switches off shortly after starting. Error message "H95” appears in the display.The door is not properly closed. Open the door again and close it properly, if this does not help, contact the after-sales service.
Error message "E723" appears in the display.The door is not properly closed.Open and close the appliance with the CJ) button.
Error message "Er1" appears in the display.The temperature sensor is faulty.Call the after-sales service.
Error message "Er11 ” appears in the display. "Button is jammed"The buttons are dirty or the mechanics have jammed.Press all the buttons several times. Clean the buttons with a dry cloth. Open and close the appliance door. If this does not help, consult the after-sales service.
Error message "Er4" appears in the display.There is extreme overheating (possibly a fire inside). Microwave power setting too high.Do not open the door. Disconnect from the mains or
switch off the fuse in the fuse box and allow to cool down.
Error message "Er18" appears in the display.Technical fault.Call the after-sales service.

Bosch HBL series microwave troubleshooting

Wall ovens made by the German electronics manufacturer Bosch are included in a range called Bosch HBL series. At the moment there are about 40 products. There are several types of microwaves in this line, including single ovens, double ovens, and combination ovens. Single ovens have only one oven to bake, roast and grill in, while double ovens have a grill in the smaller top oven.

Oven ProblemPossible Causes and Suggested Solutions
Oven door is locked and will not open, even after cooling.Turn the oven off at the circuit breaker and wait five minutes. Turn breaker back on. The oven should reset itself and will be operable.
Oven is not heating.Check circuit breaker or fuse box to your house. Make sure there is proper electrical power to the oven. Be sure oven temperature has been selected.
Oven is not cooking evenly.Refer to cooking charts for recommended rack position. Check "Getting the Most Out of Your Appliance" for tips and suggestions.
Baking results are not as expected.Refer to cooking charts for recommended rack position. Check "Getting the Most Out of Your Appliance" for tips and suggestions. Adjust oven calibration if necessary. See "Oven Temperature Offset' under "Customer Settings".
Food takes longer to cook than expected.The oven is carefully calibrated to provide accurate results. However, the temperature can be offset if food is consistently too brown or too light. See "Oven Temperature Offset' under "Customer Settings".
Food is overcooked.The oven is carefully calibrated to provide accurate results. However, the temperature can be offset if food is consistently too brown or too light. See "Oven Temperature Offset' under "Customer Settings".
Convection Bake results are not as expected.The oven temperature must be manually reduced by 25 °F. Refer to cooking charts and tips for rack positions, cooking times and pan selection. Adjust oven calibration if necessary. See “Oven Temperature Offset” under "Customer Settings".
Oven temperature is too hot or too cold.The oven thermostat needs adjustment. See "Oven Temperature Offset” under "Customer Settings".
Oven light is not working properly.Replace or reinsert the light bulb if loose or defective. Touching the bulb with fingers may cause the bulb to bum out.
Oven light does not turn off.Check for obstruction in oven door. Check to see if hinge is bent.
Cannot remove lens cover on light.There may be soil build-up around the lens cover. Wipe lens cover area with a clean dry towel prior to attempting to remove the lens cover.
Oven is not self-cleaning properly.Allow the oven to cool before running self-clean. Always wipe out loose soils or heavy spillovers before running self-clean. If oven is badly soiled, set oven for the maximum self-clean time.
Clock and timer are not working properly.Make sure there is electrical power to oven.
ME” and a number appears in display and control beeps.This is a fault code. Press any key or turn knob to stop beeping. Reset oven if necessary. If fault code remains, record fault code, cancel oven and call authorized service technician.
With a new oven there is a strong odor when oven is turned on.This is normal with a new oven and will disappear after a few uses. Operating the self-clean cycle also "burns-off the smell more quickly.
Control does not react when a key is touched.Be sure that surface is clean and dry. Touch the center of the touch key. Use the flat part of your finger.
Fan is running during modes that do not use convectionOn some models, the convection fan runs while the oven is preheating. This is normal.
Warm air or steam escapes from oven vent.It is normal to see or feel steam or warm air escaping from the oven vent. Do not block the vent.
Cooling fan runs even when the oven is turned off.This is normal. The cooling fan will continue to run. even after the oven has been turned off, until the oven has cooled sufficiently.

Bosch HMB series microwave troubleshooting

Bosch HMB is the name of the line of built-in microwaves produced by German engineering and electronics company Bosch.
Having elegant looks and multiple features, they are available in black and stainless steel. Equipped with white touch control LCD, these microwaves are designed to perfectly complement Bosch wall ovens. The HMC line of ovens has 2.1 cu. ft. large cooking interior and the power of 1200 Watts.

ProblemPossible causeRemedy
Oven will not turn on.The oven is not plugged in securely.Remove plug from outlet, wait 10 seconds and re-insert.
Circuit breaker or fuse is tripped or blown.Reset circuit breaker or replace fuse.
There is a problem with the outlet.Rug another appliance into the outlet to check if it is working.
Oven will not start cooking.The door is not closed completely.Close the oven door securely.
Start Pad was not pressed after programming.Press Start Pad.
Another program is already entered into the oven.Press Pause/Stop Pad to cancel the previous program and enter new program.
The program is not correct.Program again according to the Operating Instructions.
Pause/Stop Pad has been pressed accidentally.Program oven again.
The Glass Tray wobbles.The Glass Tray is not positioned properly on the Roller Ring or there is food under the Roller Ring.Take out Glass Tray and Roller Ring. Wipe with a damp cloth and reset Roller Ring and Glass Tray properly.
When the oven is operating, there is noise coming from the Glass Tray.The Roller Ring and oven bottom are dirty.Clean these parts according to Care and Cleaning of your Microwave oven.
The word “LOCK” appears in the Display Window.The CHILD LOCK was activated.See section Function Features.

Bosch HMC microwave troubleshooting

Bosch HMC line was created for those who are interested in buying a 2-in-1 microwave and convection oven.
This is a range of speed ovens equipped with a powerful 1700 W convection element. In addition to it, some of these microwaves have such an advantage as nine autochef cycles (cooking programs). This feature means that frying temperature stays exactly the same during a cycle.

ProblemSuggestion
Neither the microwave’s display
nor oven operates.
Properly insert the plug into a grounded power outlet.
Reset the household circuit breaker or replace any blown fuses.
The oven display works, but the oven will not operate.Make sure the oven door is closed securely and completely.
Check to see if packing material or other materials are stuck to the door seal.
Check for damage to the oven door.
Press the Clear/Off key twice and attempt to re–enter cooking instructions.
The power goes off before the cook time has elapsed.Reset the clock and any cooking instructions.
Reset the household circuit breaker or replace any blown fuses.
Press the Clear/Off key twice and attempt to re–enter cooking instructions.
The microwave power level switches from power level 10, to power level 8If the oven is set to cook for more than 30 minutes at 100% power level, it will automatically reduce the power to a 80% power level after 30 minutes to avoid overcooking.
You see sparks or arcingRemove any metallic utensils, cookware or metal ties from the oven cavity. If using aluminum foil, use only narrow strips and allow at least one inch between the foil and the interior oven walls.
The turntable makes noises or sticks.Clean the underside of the metal tray turntable, and the oven cavity bottom.
Make sure the metal tray turntable is positioned correctly
Using your microwave causes TV or radio interferenceThis is similar to the interference caused by other small appliances, such as hair dryers. Move your microwave further away from other appliances, like your TV or radio

Bosch HMV series microwave troubleshooting

Bosch HMV is a line including several over-the-range microwaves. They vary greatly in power from the modest 1000 W to 1500 W, promising oven-like results (provided you use convection cooking).

All of them have a rather large cooking interior, some boast LCD display with an easy-to-read white led lettering. Also, all the models share a multi-speed vent (385 CFM or 300 CFM, depending on the model).

ProblemSolution
Neither the microwave’s display or oven operates• Property insert the plug into a grounded power outlet.
• If the outlet is controlled by a wall switch, make sure the wall switch is turned on.
• Remove the plug from the outlet, wait 10 seconds, then plug the microwave in again.
• Reset the household circuit breaker or replace any blown fuses.
• Plug a different appliance into the power outlet. If the other appliance will not operate, have a qualified electrician repair the outlet.
• Plug the microwave into a different power outlet.
The oven display works, but the oven will not operate• Make sure the oven door is closed securely and completely.
• Check to see if packing material or other materials are stuck to the door seal.
• Check for damage to the oven door.
• Press the STOP/cancel pad twice and attempt to re-enter cooking instructions.
The power goes off before the cook time has elapsed• If there has been a power interruption, remove the plug from the outlet; wait 10 seconds, then plug the microwave in again. If there was a power outage, the time indicator in the display will show 00:00.
• Reset the clock and any cooking instructions.
• Reset the household circuit breaker or replace any blown fuses.
• Press the STOP/cancel pad twice and attempt to re-enter cooking instructions.
• Plug a different appliance into the power outlet. If the other appliance will not operate, have a qualified electrician repair the outlet.
• Plug the microwave into a different power outlet.
Food is cooking too slowly• Make sure the oven is on a seperate 20 amp circuit line. Operating another appliance on the same circuit can cause a voltage drop. If necessary, move the microwave to its own circuit.
You see sparks or arcing• Remove any metallic utensils, cookware or metal ties from the oven cavity. If using aluminum foil, use only narrow strips and allow at least one inch between the foil and the interior oven walls.
The turntable makes noises or sticks• Clean the turntable, roller ring and oven cavity bottom.
• Make sure the turntable and roller ring are positioned correctly.
Using your microwave causes TV or radio interference• This is similar to the interference caused by other small appliances, such as hair dryers. Move your microwave further away from other appliances, like your TV or radio.

Error codes and troubleshooting