IS-120B
12. Troubleshooting
12-3
Fault
code
Contents
Cause
Countermeasures
E-18
Voltage error
Secondary voltage is out of
VOLT
setting range on
MONITOR SET
screen.
E-19
Electric power
error
Welding power is out of
POWER
setting range on
MONITOR SET
screen.
Check for stained welding
electrode and low electrode
force.
E-20
Interrupt error
When
INTERRUPT
is turned on,
interrupt signal is input before
start signal is input.
Check interrupt input signal
(See
4. (8)(k)
)
.
E-21
No voltage
error
No detection of the voltage
across welding electrodes.
Make sure the cable detecting
the voltage across welding
electrodes is connected.
