Bosch CMG7241B1B 900W Built In Combination Microwave - Black

If you are getting uneven cooking results, check the following:

• Check that the door is closing fully. If not, check to see if the hinge needs to be realigned to the unit.
• Check and clean the door seal to remove any dirt or debris that could be creating a gap.
• Check that the control knob has been turned to the correct temperature and function for the food being cooked.
• Ensure all food is placed centrally upon a shelf and not at the back of the oven. We recommend positioning in the middle shelf if cooking on one tray to get heat from all angles.
• Ensure the door is not opened too much during cooking. Frequently opening the oven door can will lower the internal cooker temperature, which can result in food being unevenly cooked.

If food is taking too long to cook, check the following:

• Check that the door is closing fully. If not, check to see if the hinge needs to be realigned to the unit.
• Check and clean the door seal to remove any dirt or debris that could be creating a gap.
• Check that the control knob has been turned to the correct temperature and function for the food being cooked. You may need to increase the temperature if the food is not hot enough.
• Ensure all food is placed centrally upon a shelf and not at the back of the oven. We recommend positioning in the middle shelf if cooking on one tray to get heat from all angles.
• Ensure the door is not opened too much during cooking. Frequently opening the oven door can will lower the internal cooker temperature, which can result in food being unevenly cooked.                  

If the door isn’t closing, try the following:

• Check the latch to ensure it is secure.
• Check that the screws are tight.
• Check nothing is obstructing the door.

If the issue is still not resolved, get in touch with the support team by using the contact details on this page. To best assist you with your query, we may require photographs of the following:

• Front of the appliance
• Back of the appliance
• Serial number sticker
• Hobs
• Door
• Latch area
• Any affected areas you can see

Generally, the answer is no as putting foil in a microwave can be dangerous. Aluminium foil reflects microwaves instead of absorbing them, which can cause sparks, fire hazards, and damage to the appliance. 

Why is it risky? 

• Aluminium foil can create arcing (sparks) when it touches the microwave walls or forms sharp edges.
• It can lead to fire if sparks ignite food or paper products. 
• It may damage the microwave’s magnetron, the component that generates microwaves. 

Are there exceptions?

Some manufacturers allow small amounts of aluminium foil to shield delicate food parts (like poultry tips), but only if:  

• The foil is smooth and flat, not crumpled.
• It covers less than 25% of the food.
• It does not touch the microwave walls.

Always check your microwave’s user manual before attempting this.