If SOURCE H/L terminals are open or poorly
connected, the FAIL – GBI LOW status will appear
on the screen. Please re-check the connection of
SOURCE H/L terminals again.
Press STOP button to exit and the
resistance of test leads were not
properly added into the REF VALUE,
which shows 000.0 mΩ as shown
below. Re-check the connection of
SOURCE H/L terminals and press
START button again to proceed to the
ZERO CHECK procedure.