Manual

12. Warning messages
The following warning messages may be displayed during the testing process.
Characters which appear in the aux (small) digit field on the display are shown here in a slightly smaller font size.
12.1 Startup warnings
“UNC” -Instrument is un-calibrated
12.2 Battery
“bAt” -Low battery
12.3 Battery charger
“bAt CHA” -Battery charging
“bAt FUL” -Battery fully charged
12.4 Fuse warning
“FUS” -Fuse blown.
12.5 Invalid rotary switch setting
“ERR - - -“ -General error – invalid combination of rotary switches.
12.6 Continuity test
“VOL 0-L” -Voltage overload during test
12.7 Insulation test
“1000 V 1000 V” -Flashing warning before 1 kV test.
“VOL 0-L” -Voltage overload during test
12.8 RCD Test (or GFCI)
“trp” -Supply tripped unexpectedly.
“>50V” -Test aborted due to danger of exceeding touch-voltage limit.
“Err con” -Hardware problem detected during High Current Loop test or RCD test.
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MFT1800 series
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Warning messages