Display in DCU
Problem
Possible causes
Remedy
* Warning F110 * Pressure gauge
● Pressure gauge faulty
● Connection to the pressure gauge
disconnected during operation
● Check the cable connection
● Carry out a restart with pressure
gauge connected
● Replace the pressure gauge com-
pletely
** Error E040 **
Hardware error
● external RAM faulty
● Contact Pfeiffer Vacuum Service.
** Error E042 **
Hardware error
● EPROM checksum incorrect
● Contact Pfeiffer Vacuum Service.
** Error E043 **
Hardware error
● E
2
PROM write error
● Contact Pfeiffer Vacuum Service.
** Error E090 **
Internal device
error
● RAM not large enough
● DCU is connected to incorrect
electronic drive unit
● Contact Pfeiffer Vacuum Service.
● Connect the DCU to the correct
electronic drive unit
** Error E698 **
Communication
error
● Electronic drive unit is not re-
sponding
● Contact Pfeiffer Vacuum Service.
Tbl. 21:
Warning and error messages when using a DCU
Malfunctions
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