－
71
－
12. MAINTENANCE AND TROUBLESHOOTING
(Continued)
No.
Trouble
(Phenomenon)
Cause of Malfunction and
Abnormality
Treatment
7
After pressing the
welding torch switch,
gas flows out without
no-load voltage.
Trouble with the inverter main circuit.
Shut off the power supply and
contact your dealer.
Trouble with the control circuit.
After inspecting P30110P and
P30066S, replace it if necessary.
8
Current and voltage
can not be set.
Trouble with the control circuit.
After inspecting PCB P30110P,
replace it if necessary.
Trouble with the filter circuit.
After inspecting PCB P30110R,
replace it if necessary.
Trouble with the remote control.
After inspecting the cable and
plug for remote control or the
remote control, replace them if it
necessary.
Error in voltage detection.
Check the connection for CN5 on
circuit board P30110P.
9 Wire is not fed.
Incomplete insertion or breaking of
the control cable for wire feeder.
After inspecting the contacts of
the plug and cable, replace them
if necessary.
Trouble with the motor control circuit.
After inspecting PCB P30110Q ,
replace it if necessary.
Trouble with the filter circuit.
After inspecting PCB P30110R,
replace it if necessary.
10 WCR
keeps
working.
Trouble with the Hall current detector
(CT2).
Inspect the hall current element
CT2.
Trouble with the WCR relay (RY).
After inspecting RY on PCB
P30110P, replace it if necessary.
Trouble with the WCR circuit.
After inspecting PCB P30110P,
replace it if necessary.
Wminfo
