-
20
-
No.
Problem
Root cause
What to do
7
Fan, digital
display meter
and solenoid
valve
operational. No
pilot arc output.
Error indicator
light off.
High-frequency
discharge sound.
Poor interface contact of
pilot arc wire on torch.
Fasten the pilot arc wire
connection.
Poor connection of the
connecting wire inside the
machine.
Check and re-tighten the
connecting wire inside
the machine.
High
-
frequency board or
control board damaged.
Replace high
-
frequency
board or control board.
8
The
"machine-on"
light is lit. Digital
display meter
and fan
operational.
Overheating and
over-current
lights are lit. No
no-load output.
Over-current protection.
Shut off the machine and
reboot.
Overheating protection.
Auto-recovery after 5 to
10 minutes.
Failure of inverter circuit.
Replace IGBT tube.
Secondary
rectifier
damaged.
Replace the rectifier with
the same type.
Failure of feedback circuit.
Control board problem.
Replace control board.
Gas and electricity socket
hole obstructed.
Check the gas and
electricity socket hole
and remove obstruction.
