2. Use the diode of multimeter to measure whether the temperature fuse is in good condition, and check whether the pressure-sensitive voltage on the appearance is blown. Use a multimeter diode to measure whether the current fuse is in good condition. Measure whether R 103 is in good condition with a multimeter. Use multimeter diode to measure whether Zener diode is in good condition. Use the diode of multimeter to measure whether the power supply and grounding circuits of the control panel are normal. Whether there is a +5V output using the multimeter voltage level VDD. Use a multimeter to measure whether the voltage of chip VDD to ground is +5V. If the above is within the normal range, it can be turned on.
What are the purchasing skills of electric pressure cookers?
1. Safe shutdown. The beauty of electric pressure cooker lies in pressure, so it is natural to be more careful when using pressure. Before cooking, carefully check whether the exhaust hole of the electric pressure cooker is normal, whether there is blockage and whether the safety valve is normal. Some electric pressure cookers are equipped with intelligent self-checking system, but for products without these functions, users should check carefully before closing the lid.
2. Open the lid safely. Electric pressure cookers, like ordinary pressure cookers, must not be opened until the pressure is completely released. Needless to say, products that support opening protection and can release pressure manually should be vigilant against other products, and "brainless" opening is prohibited.
3. The dosage is appropriate. When adding ingredients and water to the container, do not exceed 4/5 of the height of the container to prevent overflow; But it should not be lower than 1/5 to prevent the danger of water-free heating in the pot.
4. Choose the right mode. At present, the cooking methods of electric pressure cookers are various, and manufacturers preset different heating modes for users to process different ingredients. When using, you must choose the correct cooking method according to the ingredients, avoid mixing (especially the ingredients with high oil content), and prevent mechanical failure or even danger caused by incorrect mode.