Endress+Hauser FEC 22 Instructions De Mise En Service page 38

7 Trouble-Shooting and Remedies
Table 7.1
Trouble-Shooting and Remedies
Note!
Removal
Insertion
Calibration
38
All manuals and user guides at all-guides.com
7 Trouble-Shooting and Remedies
Error diagnosis
Green and red LED do not light up
Red LED flashes
Red LED lights up
LED chain does not light up
Switch point optimisation
cannot be activated.
Note!
If additional error messages occur or the error cannot be remedied: refer to the
Operating Instructions or contact E+H.
8 Replacing an Electronic Insert
If the electronic insert is to be replaced then the following procedure should be
carried out:
• Switch off all power supply to the electronic insert.
• Remove all electric connections to the electronic insert.
• Unscrew the mounting screw of the electronic insert.
• Remove the electronic insert from the probe housing.
• Check that the specifications on the electronic insert agree with the power supply
rating before inserting the electronic insert.
• Plug the new electronic insert into the slot in the housing.
• Screw down the mounting screw on the electronic insert securely.
• Connect cabling.
• Switch on the power supply.
• Carry out a reset and then recalibrate using the settings required
(see Section 5 and 6).
Cause
Power supply failure or is not
switched on
No calibration carried out.
Instrument does not operate as
limit switch.
Reset carried out = all
parameters set to factory
values. Instrument does not
operate as limit switch.
AC version:
relay de-energised.
DC version:
switching output blocked.
To minimise consumption LED
chain switches off approx. 10
min after last entry.
Power supply failure. Green LED
does not light.
Both calibrations have already
been carried out.
Elektronic insert FEC 22
Remedy
Check electrical connections.
Carry out calibration.
Carry out calibration.
LED chain reactivated by
turning the rotary switch or
pressing one or both keys. This
ensures no parameters are
altered.
Check electrical connections.
1. Carry out reset
2. Carry out a calibration.
3. Activate switch point
optimisation.
Endress+Hauser