Error
code
Problem
Possible causes
Remedy
Err118
Overtemperature of
the cooling element
(FC)
● Insufficient cooling
● Ambient temperature too high
● Improve the cooling
● Check the operating conditions
● Observe the intended use
Err173
Motor excess current
(FC)
● Suction chamber dirty
● Short-circuit
● Check the vacuum pump
● Contact Pfeiffer Vacuum Service
Err177
Overload (FC)
● Suction chamber contaminated –
Vacuum pump clogged over a
longer period or overloaded
● Short-circuit
● Check the vacuum pump
● Contact Pfeiffer Vacuum Service
● Observe the intended use
Err323
Overtemperature at
exhaust (during oper-
ation with optional gas
outlet temperature
sensor)
● Outlet temperature > 350°C
● Maximum permissible pressure
differential was exceeded
● Check the vacuum pump
● Check the operating conditions
● Acknowledge the error
Tbl. 20:
Error messages of the electronic drive unit
Error code Problem
Possible causes
Remedy
Wrn030
Pre-alarm: Excess tem-
perature at exhaust
● Outlet temperature > 250°C
● Maximum permissible pressure differ-
ential was exceeded
● Improve the cooling
● Check the operating conditions
Wrn117
Pre-alarm: Vacuum pump
excess temperature
● Insufficient cooling
● Improve the cooling
● Check the operating conditions
● Observe the intended use
Tbl. 21:
Warning messages of the electronic drive unit
12.4 Warning and malfunction messages when operating with control
units
Besides the device-specific warning and error messages of the electronic drive unit, additional messag-
es are displayed on a connected control unit.
Display
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
● Unit is connected to incorrect elec-
tronic drive unit
● Contact Pfeiffer Vacuum Service
● Connect the unit to the correct elec-
tronic drive unit
** Error E698 **
Communication
error
● Electronic drive unit is not re-
sponding
● Contact Pfeiffer Vacuum Service
Tbl. 22:
Warning and malfunction messages
Malfunctions
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