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en - Errorcode
en - Trouble-shooting
Factory reset!
Keep both keys (+ and –) pressed for
15 s - red LED flashing!
The full and empty calibration is reset
to the delivery status.
34
Code
Reason
E559
Please contact Endress+Hauser.
A120
Please contact Endress+Hauser.
Check measuring system
E203
The capacitance measured is too low
E777
Incorrect probe connected
E204
The capacitance measured is too high
ΔC too small during calibration
A617
A620
The current is outside the permitted range
(3.8...20.5 mA).
There is no connection to measured value
A661
Electronics temperature is too high
Fault
Reason
No
No supply voltage
measured value
Signal line faulty
Electronic insert faulty
- FEI20 directly connected to L1 and N
Incorrect
Incorrectly calibrated
measured value
Insulation of probe rod damaged
Liquid conductivity too low
Red LED flashing Alarm (A)/warning (W)
Note!
If the probe length is < 200 mm, no decimal point position is shown on the
display.
Alarm /
Influence on
warning
current input
A
22 mA
W
–
A
22 mA
A
22 mA
A
22 mA
W
W
3.8 mA
20.5 mA
W
Remedy
Check power supply
Check signal line
Only connect to transmitter power supply
unit
Carry out full/empty calibration again
Replace probe
Select other measuring principle
See Error Code table
Endress+Hauser
Priority
1
5
2
3
4
6
7
8
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