1. Too much or too little water.
If you put too much or too little water in the microwave oven, the water may not be heated to the required temperature. Therefore, it is very important to ensure that the amount of water you put in is the same as that recommended in the user manual of the microwave oven. Usually, it is recommended to use 250 ml to 500 ml of water, which can ensure that the water can be heated quickly.
This container is not suitable.
If the container you use is not suitable for microwave oven, it will also cause the water not to be heated to the required temperature. For example, you can't use metal or ceramic utensils to add hot water in the microwave oven, because metal will produce sparks, while ceramic utensils heated by microwave will produce hot spots, which will lead to the rupture of the container. To solve this problem, people use glass, plastic or paper containers to heat water. These containers are safer and will not be damaged by microwave radiation.
3. The power of microwave oven is insufficient.
In some cases, the heating power of the microwave oven may not be enough to boil or heat the water to the required temperature. If the power of your microwave oven is insufficient, you can try to extend the heating time, or choose to use a more powerful microwave oven to heat water.
There is something wrong with the radiator of the microwave oven.
If the radiator of your microwave oven is broken, the water can't be heated to the required temperature. In this case, it is best to send the microwave oven to a professional maintenance engineer for maintenance.
To sum up, if you encounter the problem that the microwave oven can't boil water or heat it to the required temperature, you can investigate according to the above reasons. After all possible problems are eliminated, if the problem still cannot be solved, it is recommended to contact the manufacturer or professional for repair or replacement.