Troubleshooting
79
300554859_002_C0 - 11/2016 - © Leybold
Error
code
Designation Possible cause Remedy
252 Hardware plausibility error. Frequency
converter and communication electro-
nics are not from the same pump
Front end and frequency con-
verter were interchanged.
The LEDs of the turbomole-
cular pump do not indicate a
status although communica-
tion and power supply have
been plugged in correctly,
fuse F3 has blown.
Establish the correct hardware configuration
or run a software update
Check fuse F3 (10 A slow-blow) and replace
as required.
The location of the fuses is indicated in fig.
3.14 and 3.15.
Display remains dark.
Fuse F5 has blown.
Check fuse F5 (2 A slow-blow) and
replace as required.
The location of the fuses is indicated in fig.
3.14 and 3.15.
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