15 Trouble-shooting Levelflex M
76 Endress+Hauser
15.2 System error messages
Code Description Possible cause Remedy
A102 checksum error
total reset & new calibr.
required.
device was switched off before data were
stored;
EMC problem;
E
2
PROM defective
reset
avoid EMC problems;
if alarm prevails after reset,
exchange electronics
W103 initializing - please wait E
2
PROM storage not yet finished wait a few seconds;
if warning prevails, exchange
electronics
A106 downloading - please wait downloading data wait, message disappears after
downloading operation
A110 checksum error
total reset & new calibr.
required.
device was switched off before data were
stored;
EMC problem;
E
2
PROM defective
reset
avoid EMC problems;
if alarm prevails after reset,
exchange electronics
A111 electronics defective RAM defective reset
if alarm prevails after reset,
exchange electronics
A113 electronics defective ROM defective reset
if alarm prevails after reset,
exchange electronics
A114 electronics defective E
2
PROM defective reset
if alarm prevails after reset,
exchange electronics
A115 electronics defective general hardware problem reset
if alarm prevails after reset,
exchange electronics
A116 download error
repeat download
checksum of stored data not correct restart download of data
A121 electronics defective no factory calibration available; E
2
PROM
cleared
contact service
W153 initializing - please wait initialization of electronics wait a few seconds; if warning
prevails, switch power off and on
again
A160 checksum error
total reset & new calibr.
required.
device was switched off before data were
stored;
EMC problem;
E
2
PROM defective
reset
avoid EMC problems;
if alarm prevails after reset,
exchange electronics
A164 electronics defective hardware problem reset
if alarm prevails after reset,
exchange electronics
A171 electronics defective hardware problem reset
if alarm prevails after reset,
exchange electronics
A221 probe pulse deviates from
normal values
HF module or cable between HF module
and electronics defective
check contacts on HF module
if fault cannot be eliminated:
replace HF module
A241 Broken probe rod probe broken, rope probe broken/torn
or value entered for probe length is too
short
check the probe length in 033,
check the probe mechanically, if the
probe is broken, change the probe
or change to a non contact system
probe break monitoring enabled without
mapping beforehand
disable probe break monitoring,
perform mapping and then
reactivate probe break monitoring
A251 feedthrough lost contact in the process feedthrough replace process feedthrough
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