1. When the e0 fault occurs in Supor electric pressure cooker, it is generally the following situations: 1, the upper cover thermistor is open or short-circuited, that is, the upper cover thermistor is replaced. 2. If the cover is not in place or the trigger switch and its wiring are faulty, the solution is to close the cover normally, and check whether the trigger switch and its wiring are normal, and whether the microswitch contacts can be effectively closed after closing the cover normally. Failure causes of Supor electric pressure cooker e0 2. The e0 fault of Supor electric pressure cooker is mainly due to the open circuit or short circuit of the main sensor at the bottom. We need to know the reason for the failure and rule it out: 1. First, check the temperature to see if the terminal plug-in of the sensor is loose or has poor contact. It needs to be connected correctly. 2. Check whether the temperature sensor is an old friend. Measure the resistance value with a multimeter. If it is infinite, it is an open circuit; If it is 0 ohm, it is a short circuit and needs to be replaced with a new product. 3. Check whether the control circuit board is faulty. The control substrate cannot receive or send control signals, so it needs to be replaced. How to repair the e0 fault of Supor electric pressure cooker 3? Friends who know more about electrical appliances can repair Supor electric pressure cooker by themselves: 1. After the trial operation, the fault in the sensor should be analyzed. Turn the electric pressure cooker upside down on the table and take it apart. Unscrew all screws of the rear cover with a screwdriver. Open the cover and remove the internal power coupler. 2. Next, use a screwdriver to remove all the screws that fix the computer board bracket, take out the computer board, unplug the sensor plug on it, and prepare for measurement. 3. The resistance of the chassis sensor measured by the multimeter resistance file is 1 15.5K, which is within the normal range, indicating that it is normal and not damaged. Then measure the resistance of the upper cover temperature sensor to infinity, indicating that it is in an open circuit state, because its line and magnetic control switch are in series. Therefore, rotate the cover and measure again. In order to make sure that the fault is really on the sensor, it is necessary to open the cover to measure the magnetic control switch. 4. Next, open the lid. Therefore, the lid similar to a pot is complicated in design and requires multiple steps to open. First, block the two rubber plates under the cover with an awl. Unscrew the screw in the hole with a screwdriver and remove the sealing ring cover plate in the cover. 5. Then, tilt the handle cover of the electric pressure cooker with a crowbar. Unscrew two internal screws with a screwdriver, remove the handle, and remove the lower pressure valve. 6. Next, lift the handle of the electric pressure cooker, remove the tailboard with a screwdriver, and put down and remove the handle at the same time. 7. Now, tilt the upper cover shell of the electric pressure cooker with a thin crowbar and take it off. At this point, you can see the internal mechanical structure and circuit structure. Among them, the aviation line for checking the magnetic control switch has been broken, the ground wire of the sensor has been broken, and one of the two lines of the sensor has been broken. The resistance of the sensor measured by multimeter is still infinite, which shows that the cover temperature sensor on this machine is really damaged and the magnetic control switch circuit is worn away. All these should be updated at the request of the owner. 8. Next, remove the temperature sensor. The plastic cover must be separated from the stainless steel cover first. Unscrew all three screws fixing the stainless steel cover and remove the stainless steel cover. At this time, it should be noted that there are three plastic pads and three springs in it, which must not be lost, otherwise it will not be restored. Remove all three sets of washers and springs. Unscrew the big nut of the temperature sensor with a wrench and take down the sensor. 9. Take down the sensor, and observe that the sensor is of the type of thermistor built into the metal head, and it needs to be replaced with a brand-new temperature sensor. Compare the new temperature sensor with the old one, and measure its resistance with a multimeter. The measured resistance shows 106.5K, which is within the normal range. 10. Install the new temperature sensor to its original position and fasten it. Install three sets of washers and springs on the stainless steel cover, connect with the plastic cover, and tighten the three fixing screws. Next, install the newly bought magnetic control switch in the original position, pass the connecting wire and plug between the magnetic control switch and the temperature sensor through the hole at the tail of the electric pressure cooker, and fix the grounding wire of the temperature sensor on the metal hole at the tail. Forming, bundling and fixing the wires on the shell. 1 1. Then, connect the plug in the pot with the connector terminal socket of the computer board, and insert the plug at the other end into the corresponding socket of the computer board. At this time, the cover is closed and the power coupler is connected with the power cord. Clamping clamp flowmeter, ready for power-on debugging. 12, push the brake to send electricity. At this time, the equipment has instructions. Press the function key to select, and a number will be displayed. Then press the start button, and the electric pressure cooker will start working. Observe that the working current of ammeter is 4.35A, indicating that the electric pressure cooker is working normally. At this time, it is necessary to cut off the power supply, because the heating plate cannot be burned out or it will be damaged if heated for a long time. 13. Just now, the cover of the equipment floated and was not fastened properly. Just put the computer board in its original position and fasten it. Put the bottom cover of the electric pressure cooker back and fix it with screws. When fixing, pay attention to installing the big cover outside first, and the small cover cannot be installed, because the small cover is designed to adjust the position of the screw for installing the big cover. Install the outer ring cover before installing the small cover. 14. Next, according to the reverse procedure of disassembly, reset the upper cover, inject a proper amount of water into the inner container and put it into the pot. After the cover is covered and rotated in place, clamp the clamp flowmeter and prepare for formal debugging. 15, push the brake to send electricity, the electric pressure cooker works normally, no fault code is displayed, the heating is normal, the working current is normal, and the water can be heated. At this point, the normal function key of the electric pressure cooker can be selected, but after pressing the start key, the E0 fault maintenance process is all over.