1. Introduction
This manual provides essential information for the safe and efficient operation of your Midea MM720CJ9 Microwave Oven. Please read these instructions thoroughly before using the appliance and retain them for future reference. This microwave oven is designed for household use only.
2. Important Safety Instructions
When using electrical appliances, basic safety precautions should be followed, including the following:
- Read all instructions before using the appliance.
- Do not attempt to operate this oven with the door open as this can result in harmful exposure to microwave energy.
- Do not place any object between the oven front face and the door or allow soil or cleaner residue to accumulate on sealing surfaces.
- Do not operate the oven if it is damaged. It is particularly important that the oven door closes properly and that there is no damage to the: (1) door (bent), (2) hinges and latches (broken or loosened), (3) door seals and sealing surfaces.
- The oven should not be adjusted or repaired by anyone except properly qualified service personnel.
- Liquids or other foods must not be heated in sealed containers since they are liable to explode.
- Only use utensils that are suitable for use in microwave ovens.
- When heating food in plastic or paper containers, keep a close eye on the oven due to the possibility of ignition.
- If smoke is observed, switch off or unplug the appliance and keep the door closed in order to stifle any flames.
- Overheating liquids can cause delayed eruptive boiling; therefore, care must be taken when handling the container.
- Do not fry food in the oven. Hot oil can damage oven parts and utensils and even result in skin burns.
- Eggs in their shell and whole hard-boiled eggs should not be heated in microwave ovens since they may explode, even after microwave heating has ended.
- The appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
- Children should be supervised to ensure that they do not play with the appliance.
3. Product Overview
Familiarize yourself with the components of your Midea MM720CJ9 Microwave Oven.

Figure 3.1: Front view of the Midea MM720CJ9 Microwave Oven, showcasing its black finish, silver handle, and dual mechanical control knobs.

Figure 3.2: Detailed view of the control panel, featuring the upper power level dial (Low, M.Low, Med, M.High, High) and the lower timer/defrost dial (0-35 minutes, 0.2-1.0 kg defrost).

Figure 3.3: Interior view of the microwave oven, showing the removable glass turntable and roller ring assembly.
Components:
- Door: Equipped with a safety interlock system.
- Door Handle: For opening and closing the oven door.
- Viewing Window: Allows observation of food during cooking.
- Control Panel: Houses the power level and timer/defrost dials.
- Turntable Ring Assembly: Supports the glass turntable.
- Glass Turntable: Ensures even cooking by rotating food.
- Waveguide Cover: Protects the microwave components (do not remove).
4. Setup and Installation
4.1 Unpacking
- Remove all packaging materials from inside and outside the oven.
- Check the oven for any damage, such as a misaligned or bent door, damaged door seals and sealing surface, broken or loose door hinges and latches, or dents inside the cavity or on the door. If any damage is present, do not operate the oven and contact customer service.
4.2 Placement
- Place the oven on a flat, stable surface that can support its weight and the heaviest food likely to be cooked in the oven.
- Ensure adequate ventilation. Leave a minimum of 20 cm (7.9 inches) of space above the oven, 10 cm (3.9 inches) at the rear, and 5 cm (2 inches) on both sides for proper airflow. Do not block any ventilation openings.
- Do not place the oven near heat sources such as a stove or radiator.
- Keep the oven away from radio and TV sets. Microwave operation may cause interference.

Figure 4.1: Dimensions of the Midea MM720CJ9 Microwave Oven, indicating a length of approximately 44 cm (17.32 inches), depth of 34 cm (13.39 inches), and height of 25.9 cm (10.2 inches).
4.3 Electrical Connection
- Plug the oven into a properly installed and grounded wall outlet.
- Ensure the voltage and frequency match the ratings on the appliance's rating label.
- Do not use extension cords or ungrounded adapters.
5. Operating Instructions
5.1 Setting Power Level
The Midea MM720CJ9 offers 5 power levels for various cooking needs. Use the upper dial to select the desired power level.
- High (100% power): For fast cooking or reheating.
- M.High (80% power): For general cooking.
- Med (60% power): For medium cooking, stewing.
- M.Low (40% power): For defrosting, simmering.
- Low (20% power): For keeping warm, softening butter.
5.2 Setting Cooking Time
Use the lower dial to set the cooking time. The maximum cooking time is 35 minutes.
- Place food in a microwave-safe container on the glass turntable.
- Close the oven door securely.
- Turn the upper dial to select the desired power level.
- Turn the lower dial to set the desired cooking time. The oven will start automatically.
- When the set time expires, the oven will emit an audible signal and stop cooking.
5.3 Defrost Function
The defrost function allows you to thaw frozen food based on weight.
- Place the frozen food on the glass turntable.
- Turn the lower dial to the "DEFROST(kg)" section and select the weight of the food (from 0.2 kg to 1.0 kg).
- The oven will automatically set the appropriate defrost time and power level.
- During defrosting, the oven may pause to allow you to turn or separate the food for more even thawing.
5.4 General Cooking Tips
- Always use microwave-safe cookware. Metal containers or foil should not be used.
- Cover food during cooking to retain moisture and prevent splattering.
- Stir or rearrange food halfway through cooking for even heating.
- Allow standing time after cooking for heat to distribute evenly throughout the food.
6. Maintenance and Cleaning
Regular cleaning and maintenance will ensure the longevity and optimal performance of your microwave oven.
6.1 Cleaning the Oven Interior
- Always unplug the oven before cleaning.
- Wipe the inside of the oven with a damp cloth after each use. For stubborn stains, use a mild detergent.
- Clean the waveguide cover (located on the right side of the oven cavity) regularly to prevent food particles from accumulating and causing arcing.
- The glass turntable and roller ring can be washed in warm soapy water or in a dishwasher. Ensure they are completely dry before placing them back in the oven.
6.2 Cleaning the Oven Exterior
- Wipe the exterior surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Clean the door and door seals regularly to ensure proper closure and prevent microwave leakage.
7. Troubleshooting Guide
If you encounter issues with your microwave oven, refer to the following table for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Oven will not start |
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| Food not heating |
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| Turntable not rotating |
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| Sparking or arcing inside oven |
|
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If the problem persists after trying these solutions, please contact qualified service personnel.
8. Product Specifications
| Feature | Detail |
|---|---|
| Brand | Midea |
| Model | MM720CJ9 |
| Capacity | 20 Liters |
| Microwave Power Output | 700 watts |
| Power Levels | 5 (High, M.High, Med, M.Low, Low) |
| Control Type | Mechanical Knob |
| Special Features | Defrost Function |
| Material | Painted Metal |
| Product Dimensions (L x W x H) | 44 x 34 x 25.9 cm (17.32 x 13.39 x 10.2 inches) |
| Item Weight | 11.12 kg |
| Frequency | 50 Hz |
9. Warranty and Support
Midea products are manufactured to the highest quality standards. This product is covered by a limited warranty against manufacturing defects from the date of purchase. Please refer to the warranty card included with your purchase for specific terms and conditions.
For technical support, service, or warranty claims, please contact Midea customer service through their official website or the contact information provided in your product packaging. When contacting support, please have your model number (MM720CJ9) and purchase details ready.
For more information, visit the official Midea website: www.midea.com







