The automatic heat preservation of the bear rice cooker is a very practical function, which can keep the cooked rice warm for a period of time and ensure the taste and temperature of the rice to be constant. However, if it is found that the automatic heat preservation function of the bear rice cooker can't work normally, you can investigate and solve it according to the following steps.

First of all, check whether the power supply and plug are connected properly and whether there is current passing through. If the plug is loose or the power supply is unstable, the automatic heat preservation function of the rice cooker may not be started. At this time, you can try to plug in or replace the power supply.

Secondly, check whether the temperature controller inside the bear rice cooker is normal, including temperature sensor and temperature regulator. If the temperature controller is damaged or fails, the automatic heat preservation function may not work properly. At this point, you can contact the service center for repair or replacement.

In addition, it is also necessary to check whether the insulation barrel and sealing ring of the bear rice cooker are in good condition and whether it can effectively isolate the influence of external air and temperature. If the insulation cylinder or sealing ring is damaged or aged, the effect of automatic insulation function may be affected. At this time, you can try to replace the insulation barrel or sealing ring.

To sum up, when there is a problem with the automatic heat preservation function of the bear rice cooker, it needs to be investigated and solved from many aspects. Only by ensuring that all parts inside the cooker are intact can the normal operation of the automatic heat preservation function be guaranteed.