1. Unstable power supply voltage

The normal start-up of the medium-frequency electric furnace requires a stable power supply voltage. When the power supply voltage is too low, the circuit inside the electric furnace cannot obtain enough energy, resulting in startup failure; when the power supply voltage is too high, it may trigger an overload protection mechanism to prevent the electric furnace from starting. In addition, excessive voltage fluctuations can also damage the electronic components of the electric furnace.

2. Cooling system failure

The medium-frequency electric furnace generates a lot of heat when it is working, so the normal operation of the cooling system is important for the start-up and operation of the equipment. If the cooling system fails, such as water pump damage, water pipe blockage or insufficient cooling water, it will cause the internal temperature of the electric furnace to be too high, which will trigger the overheating protection mechanism and prevent the electric furnace from starting.

3. Control system problem

The start-up and operation of the medium-frequency electric furnace depends on its control system. If there is a problem with the control system, such as a control circuit failure, software program error or sensor failure, the electric furnace will not start normally. For example, a temperature sensor failure may cause the control system to be unable to accurately monitor the temperature in the furnace, thus failing to start the heating process; and damage to components such as relays and contactors in the control circuit may directly cause the electric furnace to be unable to be powered on and started.

4. Induction coil problem

If the induction coil has problems such as short circuit, open circuit or inter-turn short circuit, the electric furnace will not be able to start normally. In addition, aging or damage to the insulation layer of the induction coil will also cause electrical failures and prevent the electric furnace from starting. Therefore, regular inspection and replacement of the induction coil to maintain its good working condition is an important measure to ensure the normal start-up of the medium-frequency electric furnace.

5. Improper load matching

When the load is too large, the starting current required by the electric furnace exceeds the supply capacity of the power supply, resulting in a startup failure; and when the load is too small, the working efficiency of the electric furnace is low, and it may even fail to start. In addition, different types of loads have different requirements for the starting current of the electric furnace. Therefore, pay attention to the load matching problem when selecting an electric furnace.