Microwave oven is a common household appliance, which uses microwave radiation principle to heat or cook food. However, sometimes when we use the microwave oven, it will rotate but will not heat up for the following reasons.

1. The high voltage fuse is blown.

A high-voltage fuse will be installed inside the microwave oven to protect the high-voltage circuit. If this high-voltage fuse blows, the microwave oven will not be hot. At this point, the high voltage fuse needs to be replaced.

The regulator of microwave oven is out of order.

There is also a component called dial adjuster inside the microwave oven, which can control the speed and direction of the wheel. If this regulator fails, it will turn without heating. At this time, the regulator needs to be replaced.

The microwave tube is damaged.

Microwave tube is the core component of microwave oven, which can generate microwave and radiate it to food. If the microwave tube is damaged, the microwave oven will not be able to heat food. At this time, the microwave tube needs to be replaced.

4. The thermistor is damaged

There is an element called thermistor inside the microwave oven, which can detect the temperature inside the microwave tube. If the thermistor is damaged, the microwave tube will overheat and stop heating. At this time, the thermistor needs to be replaced.

5. Control circuit board failure

There is also a component called control circuit board inside the microwave oven, which can control the working state of the microwave oven. If the control circuit board is out of order, the microwave oven can't work normally and can't heat food. At this time, it is necessary to replace the control circuit board.

In short, when the microwave oven rotates but does not generate heat, we need to check from the above five aspects to find out the root cause of the problem and solve it in time to ensure the normal use of the microwave oven.