Haier induction cooker e0 fault how to repair is not the motherboard completely broken to replace th

e0: Internal circuit fault protection (main circuit, power supply circuit, drive circuit).

Maintenance method. 1) Determine the approximate location of the fault.

Open the shell of the induction cooker, in order to ensure the safety of maintenance, remove the ring plate and then carry out maintenance.

After power-on, the voltage of each pin of the measuring integrated circuit IC3C (LM339) is shown in the following table, and compared with the normal values listed in the same table, the voltage of pin 8 and pin 14 is incorrect. This is shown in the figure below.

Judging from the measured voltage value, the voltage on the 14-pin signal output terminal of IC3C (LM339) is incorrect, which may be caused by the abnormal voltage of the pin, and the cause of the abnormal voltage of the pin should be checked first.

2) Find out the cause of the abnormal voltage of the foot.

For the IC3C (LM339) pin voltage related components 16 (470K ohm W) and C400 (220 pf) were checked, the results showed that the forward and reverse resistance values of C400 (220pF) were close to zero, and the breakdown and short circuit had been broken down for inspection.

3) Troubleshooting.

Replace a new 220pf capacitor with the same specification and install it, after confirming that it is correct, the power is turned on, and the work of the induction cooker is restored to normal, troubleshooting.

Tip: If none of the above checks are problematic, the fault is most likely caused by damage to the 14-pin internal circuit of the IC3C (LM339) itself. The integrated circuit accessories of the same specification should be replaced with new ones.

Replace a new 220pf capacitor with the same specification and install it, and after confirming that it is correct, the power is turned on and the work of the induction cooker is resumed.

The boot shows that the e0 fault is the internal circuit fault, and it is not recommended to repair it yourself, because professionals know what the internal circuit is, and don't break it again. After the warranty period, if you don't need to replace the spare parts, it should not be expensive. It is recommended to take it to the after-sales repair.

Feel free to ask!

If you can fix the internal wiring fault. Disassemble the machine to check whether the power supply voltage of 305V, 18V, 5V is normal, and whether the rectifier bridge and capacitor are in good condition. and whether the drive transistors S8050 and S8550 are intact.

Control whether the voltage of each arm of LM339 is normal. No, look for the after-sales service department in the manual of the induction cooker.

e0** is not detectable pot. There are the following reasons for the failure of the pot detection circuit:

1. The secondary coil of the current transformer is open and short-circuited.

2. Poor secondary welding of current transformer.

3. Adjustable potentiometer failure.

Haier induction cooker is now E0 internal circuit fault protection.

If there is an internal circuit failure, it should be sent to the after-sales service, and the repair and replacement parts are free of charge during the warranty period, and do not disassemble it yourself.

The principle of the induction cooker is to use the alternating current through the coil to generate an alternating magnetic field that changes direction, and a vortex current will appear inside the conductor in the alternating magnetic field (the reason can refer to Faraday's law of electromagnetic induction), which is caused by the vortex electric field driving the carriers in the conductor (the pot is electrons and not iron atoms) to move, and the Joule heating effect of the vortex current heats up the conductor, so as to achieve heating.

EO may be unchecked. But the fault of each manufacturer is different, so this is not entirely correct

EO is a fault**, which means that there is an internal line failure, and the building instrument will be sent to the after-sales service, such as the repair and replacement during the warranty period is free of charge, subject to the invoice purchase date. You see if it's useful

Lebang induction cooker failure**.

Fault Symptom Fault Display** Cause of Failure.

The LED is flashing, the buzzer is beeping, and there is an error in the E0 circuit.

LED flashing, buzzer short E1 No pots, pots and pans are wrong.

LED flashing, buzzer beeping E2 IGBT overtemperature.

LED flashing, buzzer short E3 voltage is too high.

LED flashing, buzzer short E4 voltage is too low.

LED flashing, buzzer beeping E5 sensor short circuit Open circuit.

LED flashing, buzzer beeping E6 The bottom of the pot is overheated.

If there is an error in the circuit, let's repair it after you get it.

Contact the after-sales personnel to check the circuit and see if it is a short circuit.

The failure of the Haier induction cooker E0 is common in computer boards, chip boards and heating plates, etc., and the following is the maintenance method for the Haier induction cooker E0:

1. Computer board failure.

1.Check whether the power cord of the Haier induction cooker is connected normally and whether it is in good contact.

2.Check whether the power supply voltage of the computer board is correct and confirm that it reaches 220V.

3.Check whether there is any obvious scorching or swelling problem on the computer board, and if so, it needs to be replaced in time.

4.If the computer board fails, you need to replace the computer board or replace it with a higher-end computer board to ensure the normal use of the computer board.

Second, the chip board is faulty.

1.Check whether the power supply voltage of the chip board is correct and confirm that it reaches 220V.

2.Check the chip board for obvious scorching or swelling problems, and if so, need to be replaced in time.

3.If the chip board fails, you need to replace the chip board or replace it with a higher-end chip board to ensure the normal use of the chip board.

3. Heating plate failure.

1.Check whether the power cord of the Haier induction cooker is connected normally and whether it is in good contact.

2.Check whether the heating plate is in good contact with the base, whether there are rust and other problems, if there is a problem, it needs to be replaced in time.

3.Check whether the heating board circuit and related components are broken, burned, etc., and if there is a problem, it needs to be replaced or repaired.

4.Check if the heating plate sensor is faulty, and if it is faulty, it needs to be replaced or repaired.

5. Summary. The above is the maintenance method for Haier induction cooker E0, if the noisy hole encounters the above fault problems, you can repair it according to the above methods. However, when carrying out maintenance, it is necessary to pay attention to safety and prohibit unauthorized disassembly of Haier induction cooker, so as not to cause unnecessary losses.

If the fault problem cannot be solved, it is recommended to contact a professional for repair in time.

The induction cooker detects none when it is in working condition.

Pots and pans, pots and pans are not of the right material or size.