Kendro HERAcell 150, Operating Instructions Manual

Page: 127 / 251

Name/Name Datum/Date Benennung/Designation
Erstellt/Prepared
D.Dornseiff 01/15/98
Index Änderung Name/Name Datum/Date
Service Handbuch HERAcell 150
Service Manual HERAcell 150
C 202613 D.Dornseiff 06/26/03
Dokumentnr./Document No. Seite/Page
Datei/File
50051109_04_EN_C.doc 50051109 / C 21/ 9
Weitergabe sowie Vervielfältigung dieser Unterlage, Verwertung oder Mitteilung ihres Inhalts nicht gestattet, soweit nicht ausdrücklich zugestanden. Zuwiderhandlungen ver-
pflichten zu Schadensersatz. Alle Rechte für den Fall der Patenterteilung oder Gebrauchsmustereintragung vorbehalten. © Kendro Laboratory Products GmbH, Germany
4.6 ERROR TABLE
Aside from the current error, outputting the unit's error history may be helpful in cor-
recting a problem.
To output the last 10 errors, press the
i and the

keys. The most recent error is
displayed in position 1, the oldest in position 10 (refer to the section on error storage in
the operating instructions).
Error table
Code Cause Fault condition
Communications between
display mP and main board
interrupted. The display is not receiving display values from
the master processor.
42 Main board NVRAM read er-
ror Default values were loaded.
43 Main board NVRAM read er-
ror The mirrored values were loaded.
44 NVRAM defect Values of the measuring cell are not overwrit-
ten, unit runs using default values
54 Set value error Error in the calculation of the ser values. The
processor performs a “reset”.
55 I²C bus error Data transfer to the I
2
bus interrupted.
66 Deviation between tempera-
ture probe PT1000 and LM
75 is too large.
(No longer plausible.) The validity of the temperature signals is no
longer assured because the permissible devia-
tion between the measured values for:
The incubation mode are > + 2 °C, or;
The decontamination mode are > + 5 °C.
77 CO
2
calculation range ex-
ceeded.

The offset value for the CO
2
adjustment
made by the cal function exceeds the
maximum permissible adjustment range of
+ 10.0 % CO
2

The calculated temperature adjustment
factor exceeds the maximum permissible
adjustment range of 0.8 ... 1.2.
88 auto-start error The total running time (1080 min.) has passed
without the routine concluding, or the maxi-
mum CO
2
countervoltage adjustment value
has been exceeded.
99 Glass door open or door
switch defective. The door or door switch have remained in the
"open" state for more than 10 min. (The door
switch contact is closed when the glass door is
open!!)
100 Temperature below set value Actual value < set value - 1.0 °C
101 Temperature above set value Actual value > set value + 1.0 °C
(Sample protection function active.)