Fault Finding And Repair - Endress+Hauser RIA251 Operating Instructions Manual

6. Fault finding and repair

During production all units go through a number of quality
control stages. In order to assist you in fault finding we have
listed a number of possible faults, causes and cures.
Process display system fault messages
Faults that could occur during the self test or during operation
are immediately indicated on the display. Fault messages that
can be acknowledged are deleted after operating a push.
Fault code Cause
E 090 Loop current to low. To store operating data a
minimum of 3.6 mA has to be on the input provided.
E 101 The EEPROM for storing operating parameters is
defective.
E 102 Checksum of operating parameters is invalid or the
software version in the EPROM does not correspond
with the operating data in the EEPROM. Possible
cause is a power failure during parameter save
procedure or a software update.
E 103 Checksum for the calibration value of the analogue
input in the EEPROM is faulty. Possible cause is a
power failure during calibration, an uncalibrated unit
or a defective EEPROM.
E 106 Warning: Due to a setting up fault an incorrect setting
up of the display range/scale or bargraph was
initiated (lower and upper values identical).
E 111 Checksum for the operating value of the analogue
input in the EEPROM is faulty. Possible cause is a
power failure during parameter save procedure or a
software update.
Process display
Cure
Please check the
loop current.
Please return the
unit for repair.
A PRESET is auto-
matically initiated by
operating the "E"
push button. This
means all para-
meters are returned
to default.
Please return the
unit for repair.
Please correct the
value.
Please return the
unit for repair.
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