SCP System • Error messages and error diagnosis
26 CP_SEM_60-00-00.002
4.1.2 Error codes
The following error messages are only shown on the 7-segment display “Actual value” (RPM).
Error Description/Possible causes Corrective measures
(please observe sequence)
RAM defective – Replace CPU board
see page 32
EPROM defective, checksum incorrect – Replace EPROM or
–Replace CPU board
see page 31
see page 32
EEPROM defective – Replace CPU board
see page 32
Processor error – Replace CPU board
see page 32
Display error, either Display board or
CPU board defective
– First replace display board; if the error
display persists
–Replace CPU board
see page 33
see page 32
Processor error – Replace CPU board
see page 32
Difference set value-actual value of pump
more than 250 RPM,
drive unit error
–Replace motor control board
see page 40
A/D converter: reference voltage outside
tolerance limits
–Replace CPU board
see page 32
Shut-off path test (on powering up)
defective
–Replace CPU board
see page 32
Difference set value-actual value of pump
more than 1000 RPM, drive unit or
CPU board error
–Replace motor control board; if the
error display persists
–Replace CPU board
see page 40
see page 32
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