The induction cooker is not heated. Is it out there?
Internal factor protection of induction cooker.1, temperature sensor open circuit, short circuit protection: the protection will be forced to close the electromagnetic oven in the work, and make the electromagnetic oven in the absence of troubleshooting before are closed, any key does not work, and display fault code.2, IGBT tube overpressure protection: when some cause IGBT collector voltage rise and achieve protection trigger conditions, overpressure protection action, forced the electromagnetic oven to reduce output power, IGBT collector voltage is reduced. Such protection circuit action will occur "intermittent heating", "output power reduction" and so on.3 、 IGBT over-current protection: over-current protection to reduce the output power or direct suspension, the delay after a period of time to start again into the work state. This kind of protective action occurs when there is a "regularly interrupted heating".
External natural factors, conditions, protection:1 、 power grid voltage protection: when the voltage is high or the voltage is lower than the working voltage range of electromagnetic furnace, protection appears. The nature of protection is mandatory standby. And display the fault code (if there is a display function).2, electromagnetic oven overheating protection: protection trigger temperature more than 90 to 95 degrees, lift the temperature in 60 to 70 degrees. The nature of protection is paused, and the fault code is displayed. If the temperature is monitored to 110 degrees, the protection circuit is forced to shut down. (overheating protection is liable to be mistaken for "intermittent heating")3, surge protection: surge is a harmful power grid voltage generated in the instantaneous increase or decrease of the relatively large spike surge is too large will generally be varistor release, only smaller surge will trigger the action of surge protection circuit. The nature of protection is temporary suspension. If the grid is out of date and there is poor contact, there may be irregular pauses. (such protection is generally difficult to detect or mistake for the power of an induction cooker.)
The main function of the electromagnetic oven is heated, but in many cases the electromagnetic oven can be heated, not necessarily caused abnormal or faulty electromagnetic oven, because in the electromagnetic oven circuit design of protection circuit in great quantities, generally have seven or eight or more, and the protection circuit is to prevent power, temperature and other external natural factors change and all kinds of unexpected abnormal phenomena inside the machine malfunction cause electromagnetic oven settings. Before the overhaul of the induction cooker, it should be carefully analyzed whether the electromagnetic oven is a real fault or a false fault.
