01 Jun Induction Cooktop Efficiency: Simple Troubleshooting Steps
Induction Cooktop Efficiency Cooling System Circuit Failure
During the use of the induction cooktop, the fan has the longest working cycle, so the reason for its damage is mostly mechanical failure. In order to utilize the induction cooktop efficiency, it must be maintained or troubleshoot if there is minor failure such as its cooling system circuit. The steps below provide you the simple phases to fix your induction cooker.
1 Open the shell of the induction cooker, remove the fan, replace it with a standard cooling fan of the same specification, and then turn it on. If the fan can run normally, it means that the fault is caused by the fan itself. After replacing the new fan, the issue can be eliminated. If the fan still does not work properly after replacing it with a new one, the issue could be the fan drive circuit or microprocessor.
2 Use a multimeter to measure whether the fan has a working voltage of +12V (pin ② of socket FAN). If there is no +12V voltage, the failure could be because of the +12V power supply circuit or the line from the +12 V power supply to the pin ① of the socket FAN (fan), and the +12V power supply circuit should be checked. If +12V is present, the fault is in the driver circuit and microprocessor. Induction cooktop efficiency is feasible when proper steps are done to correctly.
3 Power-on to detect whether there is a 5V voltage output from the rollers of the microprocessor. If there is no 5V voltage output from the rollers of the microprocessor, it means that the microprocessor has no driving signal, and it can be established that the microprocessor is damaged. After replacing the microprocessor of the same type and specification, the fault can be eliminated. If there is a 5V voltage output from the rollers of the microprocessor, the fault is in the driver circuit.
4 Detect the voltage of pin ① of socket FAN (collector of transistor Q3) when power on. If the voltage of pin ① of FAN is measured to be close to 0.7V, it means that the circuit is open. Check whether there is an open point in the line from pin ① of socket FAN to the fan. Turn on the open point and the fault can be eliminated. If the measured voltage of pin ① of FAN is close to 12V, the fault lies in the drive circuit.
5 Disconnect the power supply and check whether Q3 and R27 are damaged or whether there is an open circuit in the circuit. Induction cooktop efficiency issue can be settled through replacing damaged components or repairing the open circuit.
Induction Cooker Alarm Circuit Failure
Structure of Induction Cooker Alarm Circuit Figure 1 shows the induction cooker alarm circuit. In Figure 1, when the induction cooker emits an alarm sound, the ① pin of the MCU outputs a pulse voltage with amplitude of 5 V and a frequency of 4 kHz to the buzzer BZl, so that the BZl makes an alarm sound. The induction cooktop efficiency will not be appreciated when there is unknown damage of the item. Thus, it is important to properly troubleshoot the malfunctioning of the induction cooker.
Figure 1
1 The buzzer of the induction cooker that does not sound is usually caused by the lack of drive signal output from the ① pin of the microprocessor or the damage of the buzzer itself. Because the buzzer is directly driven by the microprocessor, and the components involved are relatively few.
2 Power on to check whether there is a +5 V voltage during inspection. If there is no +5 V voltage, it is treated as there is no auxiliary power failure; if the +5 V voltage is normal, the resistance can be detected R44. If the resistor R44 is open or the resistance value is deteriorated, replace the resistor R44. If the above checks are normal, the voltage of pin ① of the microprocessor should be detected.
3 When induction cooktop efficiency or proper function is still not fixed when pressing the button on the panel, observe the change of its voltage. If there is no voltage change of about 1.6 V on the ① pin of the microprocessor, it means that the microprocessor is damaged, and the fault can be eliminated by replacing the microprocessor. If the voltage of pin ① of the microprocessor changes about 1.6 V, it means that the buzzer has a driving signal, and the fault lies in the buzzer.
4 To fix it, replace the buzzer with a new one .
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