Error
code
Problem Possible causes Remedy
Err040 Defective storage
expansion
● Contact Pfeiffer Vacuum Service
Err043 Storage of parame-
ter values defective
● Internal configuration error ● Contact Pfeiffer Vacuum Service
Err044 Excess temperature,
electronics
● Insufficient cooling ● Improve the cooling
● Check the operating conditions
Err045 Excess temperature,
motor
● Temperature fuse, motor, as
insufficient cooling
● Starting time in lower rota-
tion speed range (up
to 90 Hz) >6 min
● Improve the cooling
● Check the operating conditions
● Check the fore-vacuum connection
─ Carry out leak detection
─ Reduce the fore-vacuum pressure where
applicable
Err098 Internal communica-
tion error
● External faults
● Device defective
● Contact Pfeiffer Vacuum Service
Err621 Electronic drive unit
does not detect the
turbopump
● Turbopump is not connected
correctly
● Incorrect image impedance
● Check the connections
● Contact Pfeiffer Vacuum Service
● Only acknowledge for rotational speed f = 0
Err699 Error in the drive of
the TCP
● Contact Pfeiffer Vacuum Service
Err777 Nominal rotation
speed not confirmed
● Nominal rotation speed not
confirmed after replacing the
electronic drive unit
● Confirm the nominal rotation speed with
[P:777]
● Only acknowledge for rotational speed f = 0
Tbl. 31: Error messages of the electronic drive unit
Error code Problem Possible causes Remedy
Wrn007 Undervoltage or
power failure
● Mains failure ● Check the mains input voltage
Wrn046 Data channel dis-
rupted
● Communication to parameter
value storage disrupted
● Contact Pfeiffer Vacuum Service
Wrn110 Gauge warning ● Gauge is defective
● Supply cable has no contact
● Restart the electronic drive unit – with in-
tact electrical connection
● Replace the gauge if necessary
● Check the parameterization of the gauge
Tbl. 32: Warning messages of the electronic drive unit
Malfunctions
49/56
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