Xylem WEDECO SMOevo PLUS Series Original Manual page 151

Message Message shown on the display
No.
SYS:AI114 Alarm signal fault process
136
analyzer
SYS:AI116 Alarm signal fault oxygen
137
concentration ambient air
SYS:AI118 Alarm signal fault gas flow line 1
138
SYS:AI120 Alarm signal fault gas flow line 2
139
PSU:AI200 Alarm signal fault temperature
145
step-up transformer primary coil
PSU:AI202 Alarm signal fault temperature
146
step-up transformer ferrite core
Manual_SMOevoPLUS_eng_01.2019.doc
Manual Ozone Generating System SMOevo
Description /
Possible Cause
Signal < 4 mA or signal > 20 mA.
Cable breakage.
Measuring device or transducer
input PLC defective.
Signal < 4 mA or signal > 20 mA.
Cable breakage.
Measuring device or transducer
input to PLC defective.
Signal < 4 mA or signal > 20 mA.
Cable breakage.
Measuring device or transducer
input PLC defective.
Signal < 4 mA or signal > 20 mA.
Cable breakage.
Measuring device or transducer
input PLC defective.
Resistance signal PT100 not
correct.
Cable breakage.
Measuring device or transducer
input PLC defective.
Resistance signal PT100 not
correct.
Cable breakage.
Measuring device or transducer
input PLC defective.
PLUS
Troubleshooting
Countermeasures
Check signal.
Check cables and connections.
Calibrate ambient air sensor.
Replace, if necessary.
Check signal
Check cables and connections.
Replace sensor.
Check signal.
Check cables and connections.
Replace sensor.
Check signal.
Check cables and connections.
Replace sensor.
Check signal.
Check cables and connections.
Check signal.
Check cables and connections.
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