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Operation manual ISOTEST 4 S / 4 S
p l u s
Error message:
Acoustic signal after pressing the safety button and
contacting the test object with the electrode
Error Message
Possible Causes
Remedy
●↔○
The LED flashes yellow
Overload
Clean and dry the test
object
Use a testing electrode
with a smaller contact
area
The coating is
electrically conductive
and cannot be tested
●↔○
The LED flashes red
(safety shut-off)
Continuous sparking
over more than 5
seconds
Turn the unit off and on
Avoid continuous
sparking
●↔○
The LED flashes red
(safety shut-off)
Readjusting the
magnitude of the test
voltage with the safety
button depressed
Release the safety
button After calibrating
to the newly adjusted
voltage, the LED
illuminates green and
the unit is ready for
use.
●↔○
The LED flashes red
(safety shut-off)
The safety mode is
enabled
Press the safety button
to exceed the first
trigger point,
or select the standard
mode for the safety
button.
●
The LED illuminates red
Void in the test object
Desired result
