User Manual
GMC-I Messtechnik GmbH 69
– A short-circuit has been detected 
at the test socket between L and 
N.
➭ Determine whether or not the de-
vice under test is defective.
➭ In 
the case of DUTs which are in-
tended for operation at an outlet 
that’s pr
otected with a 16 A fuse, a 
sh
ort-circuit may be detected 
under certain circumstances if, for 
example, they include a PTC resis-
tor (e.g. large floodlights). Be sure 
t
o use a 3-phase test adapter in 
order to test devices of this sort 
(e.g. the AT3-IIIE).
➭ You can deactivate this short-cir-
cuit test in the sequence parame-
ters at your own risk.
– A short-circuit has been detected 
at the test socket between L/N and 
PE.
➭ Determine whether or not the de-
vice under test is defective. Repeat 
the vi
sual inspection.
General Application Errors
– The inspector to be deleted is cur-
rently selected and thus cannot be 
delet
ed!
➭ Activa
te a different inspector before 
deleting.
–25 A measurement takes too long
or
–25 A measurement has been per-
formed too often (without breaks).
➭ Wait until the device has cooled 
down and then restart measure-
ment.
Error Messages Possible Causes Corrective Measures










