28
LRS 1-50 - USA - Installation & Operating Manual -
850704-01
Fault indications and troubleshooting
Indications, diagnosis and corrective action
Attention
Please check the following before fault diagnosis:
Supply voltage:
Is the conductivity switch supplied with the voltage specified on the rating plate?
Wiring:
Does the wiring conform to the wiring diagram?
Error codes on the 7-segment display
Error
code
Error
Corrective action
E.001
Faulty temperature sensor, temperature
reading too low
Check resistance thermometer and LRG 16-9 conduc-
tivity electrode and replace if necessary. Check electri-
cal connection (short circuit, open circuit?).
E.002
Faulty temperature sensor, temperature
reading too high
E.005
Faulty conductivity electrode, reading
too low.
Check conductivity electrode and replace if necessary.
Check electrical connection.
E.006
Faulty conductivity electrode, reading
too high.
Check conductivity electrode and replace if necessary.
Check electrical connection.
E.013
MIN switchpoint higher than MAX
switchpoint
Reset switchpoints
E.097
Walkthrough application error
Internal error. Replace equipment.
E.098
Walkthrough test error
Internal error. Replace equipment.
E.099
Internal test error
Internal error. Replace equipment.
In the event of a malfunction, the MIN and MAX alarm is triggered.
Attention
■
For further troubleshooting, please refer to the LRG 16-4, LRG 16-9
Installation & Operating Manuals.
Note
In the event of a fault in the conductivity switch, the MIN and MAX alarm is trig-
gered and the equipment restarts.
If the process repeats itself continuously, the equipment must be replaced.
