39
6
Correcting Faults
Help:
If R
ki
-O
2
for LT3-F over 50
then
- Probe too cold.
- Internal resistance regulation not active or incorrect setpoint value.
- The probe is stuck in a cold spot and the heating capacity does not suf-
fice.
Look for a new installation position.
- Flow speed too high.
- Heating defective and probe cold.
- Sensor breakage.
- Check wiring between probe and LT3
(signal terminals 10/11/12)
If R
ki
-O
2
under 10
, probe is too hot, internal resistance regulation is not
active, or incorrect setpoint value.
The optimum operating point (setpoint value) lies at 15
.
007 (HP)
107 (ÜP)
Probe insulation
Exhaust gas temperature at probe head > 300 °C. Probe too hot.
Possible wiring errors when using a SAK
–
Check wiring
Help:
Remove the probe.
For LS2 Standard: Extend the connection piece of the probe installation fit-
ting and GED if necessary. Extension must not be insulated.
For LS2-HT: Use intermediate flange. The intermediate flange must not be
insulated.
008 (HP)
108 (ÜP)
Intern fault: measured value comparison HP/UP
Device defective; contact the manufacturer and specify the trigger for diag-
nostic purposes.
Possible wiring errors when using a SAK
–
Check wiring
014 (HP)
114 (ÜP)
Write the data record
015 (HP)
115 (ÜP)
Parameter/EEPROM fault
After a software update, the default parameters were not read in, trigger
P105.
Device defective. Contact the manufacturer and specify the trigger for
diagnostic purposes.
016 (HP)
116 (HP)
Internal fault/self tests
Device defective. Contact the manufacturer and specify the trigger for
diagnostic purposes.
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