10. Troubleshooting
WMD078TE0PAA07
132
10. Troubleshooting
•
Only qualified personnel who understand
electrical knowledge should perform error
handling.
•
After completing welding operation, leave it
for five minutes to discharge the capacitors.
10.1 Error No. indication
Some errors can apply self-diagnosis. Main and
sub numbers of such error are indicated on Dis-
plays1 and 2 if occurred. (See the below figure)
•
lass (Recovery classification)
WARNING
When the power (or breaker) is auto-
matically shut off, contact Panasonic
representatives for repair.
Reclosing the product can cause physi-
cal injury due to short circuit.
WARNING
Prior to working on internal parts, such
as switching work, turn off power at the
power distribution box and ensure
safety. After the switching work, put the
panels back in place.
Do not touch any live parts. Other-
wise, it may result in electric shock or
death or serious injury.
CAUTION
T ensure safe inspection work, make
sure to wear protective equipment prop-
erly.
Improper handling of the product and
crack of the plastic parts due to time
degradation can cause physical injury.
A
The error indication is automatically
turned off if the cause of the error is
eliminated.
* Automatic reclosing
B
The error indication remains blinking
until power is turned off.
* Required manual reclosing.
<Example: Error 4-2>
Blinks in 0.5 second interval
Err - 04 - 2
P R I O V E R V L T . 2
Contents of Sub number
Sub number
Main number
LCD
Main
No.
LCD (Contents)
Sub
No.
Class
Cause
Remedy
01 EMERGENCY STOP
(Emergency stop)
-
B
Jig terminal received an
emergency stop signal
from an external device.
Remove the cause of the
error in the external device.
Then turn on the power
switch again.
02 2nd OVER CURRENT
(Secondary side over cur-
rent error)
-
A
Over-current due to
short circuit in the sec-
ondary circuit.
Turn off the torch switch,
and then remove the cause
of over-current.
