Fault symptom and remedy Of High frequency Induction Heating Machine

NO Symptom Cause Remedy
1 No power supply: neither power indicator lamp nor digital-display meter goes on 1. Air switch or power switch has not been turned on Turn on the switch
2. Control fuse wire is damaged Check the control fuse wire on rear panel of equipment, replace it with new fuse of 1A
3. Air switch or power switch is damaged Replace the wire switch with new one
4. No power supply input Check the external power supply circuit
5.Equipment

fault

Control transformer is damaged Detect with multimeter
Control mainboard is damaged Send to the factory for maintenance
2 Fail to start the equipment: after pressing the start button, current display is 000, machine makes quick sound, green lamp on the panel flickers and stops automatically about 2s later; 1. There is short-circuit among coils of induction coil; Leave gap among the coils of induction coil, or use insulating materials to isolate
2. Mackintosh is used when installing the induction coil Don’t use mackintosh, if the joint of induction coil has water leakage, please refer to the Notices for Installation in the manual
3. Size of induction coil or coil number is not suitable Please refer to the “Design of Induction Coil” or consult our company
4. If it is separated machine, connecting wire between main frame and extension is loosened Check the connecting wire of main frame – extension
5.Equipment

fault

Primary side wire pad of high-frequency transformer becomes aged Consult our maintenance personnel
Resonant capacitor is broken down, capacitance is reduced Send to the factory for maintenance
Power device is damaged Consult our maintenance personnel
Control circuit board is damaged Send to the factory for maintenance
Potentiometer on panel is damaged, no given signal Consult our maintenance personnel
Others Consult our maintenance personnel
3 Succeed in starting, has current display, working indicator lamp flickers normally, beeping sound is normal; but is failed to heat or heats slowly; There is short-circuit among coils of induction coil; Leave gap among the coils of induction coil, or use insulating materials to isolate;

Replace it with new induction coil;

4 Alarm, fail to heat, over-heat indicator lamp goes on; 1. Temperature of cooling water is too high or water flow is too small Change the cooling water or increase the water pressure
2. Temperature switch is damaged Change the temperature switch
3. Something wrong with mainboard Send to the factory for maintenance
NO Symptom Cause Remedy
5 Alarm, fail to heat, over-voltage indicator lamp goes on; 1.Input voltage exceeds 420V Detect the input voltage
2.Setting of over-voltage recognizing device on mainboard is not accurate Consult our maintenance personnel
3.Equipment fault: mainboard trouble Send to the factory for maintenance
6 Alarm, fail to heat, under-water indicator lamp goes on; 1.Water-pressure is too low, lower than 0.2MPa Refer to the Installation & Maintenance Guide
2.Mainboard trouble Something wrong with the pressure switch 1. Reset the protection value of pressure switch;

2. Replace with new one.

Mainboard trouble Send to the factory for maintenance
7 After being started, equipment shuts down automatically after giving a sound of beep; or current is very low and fail to increase, temperature of the big green resistor in the equipment increases sharply, even discharges smoke; 1.There is fire struck among induction coil, workpiece and tool equipment; Check the induction coil
2.If it is separated machine, quick connector of connecting wire of main frame – extension may have bad contact; Check the quick connector
3.Relay JQX-59F is damaged; Check the relay, regulate the contacts, if it is unable to be repaired, replace with new one;
4.Element of high-frequency

.transformer strikes fire;

Replace with new one
5. Resonant capacitor board strikes fire; Deal with the fire struck part or replace with new one
6.Other parts strike fire; Deal with the fire struck part or replace with new one
7.Others Consult our maintenance personnel
8 Give an alarm and over-current lamp goes on once pressing the start button, this appears repeatedly, it works to no avail by regulating the current to the minimum; 1.There is fire struck among induction coil, workpiece and tool equipment; Check the induction coil
2.Equipment fault MOS tube is damaged Send to the factory for maintenance
Something wrong with the mainboard Send to the factory for maintenance
Primary side of high-frequency transformer is burnt Replace with new one
9 Give over-current alarm when there is heavy current, work normally under small current condition 1.Input grid voltage is too low, or load carrying capacity of power grid is too low; Improve the power grid voltage, or use under small-current condition
2.Frequency is too low, too many turns of induction coil, or the coil is too large; Improve the induction coil
3.Equipment fault Primary side wire pad of high-frequency transformer becomes aged Replace with new one
Insulation of other parts is reduced Send to the factory for maintenance
Main control board has fault Send to the factory for maintenance
Potentiometer on panel is damaged Send to the factory for maintenance
Other faults Send to the factory for maintenance
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