Lamtec LT3 User Manual

38
6 Correcting Faults
Help:
Installation site too hot: the heating capacity cannot be further reduced
(current actual value of R
i
< 15 ) to reached the setpoint value of the
internal resistance R
ki
of 15 or
Installation site too cold: the heating capacity cannot be further increased
(current actual value of R
i
> 15 ) to reached the setpoint value of the
internal resistance R
ki
of 15 . Check the value of the internal resistance
R
ki
in the display.
- Trigger the probe exchange and restart the probe so that the R
ki
of
15 can be learnt again.
- Check the system temperature at the installation site.
- Check the probe when removed if pertinent.
- Exchange  the worn probe if pertinent.
- As a follow-up fault, 002/3 Heater R
i
outside of 5 ... 15 might be
displayed.
/3 Heater R
i
outside of 5 ... 15 
Internal resistance of heater outside of the interval 5  ... 15 
Help:
Installation site too hot: the heating capacity cannot be further reduced
(current actual value of R
i
< 15 ) to reached the setpoint value of the
internal resistance R
ki
of 15 . Check the value of the internal resistance
R
ki
in the display.
- Trigger the probe exchange and restart the probe so that the R
ki
of
15  can be learnt again.
- Check the system temperature at the installation site.
- Check the probe when removed if pertinent.
- Exchange  the worn probe if pertinent.
As a follow-up fault, 002/2 Heating capacity outside of permissible interval
(8 W ... 25 W) for longer than 15 s might be displayed.
/4 OFF current too high
/5 Heating control circuit open
Heater controller at limit stop for longer than 30 seconds.
Help:
Check wiring between probe and LT3 (check probe signals terminals 10/
11)
/6 Temperature of the O
2
sensor too high (R
ki
-O
2
too low)
For longer than 10 seconds, R
ki
-O
2
is under 10 
Heater R
i
outside of 5  ... 15 
Internal resistance of heater outside of the interval 5  ...15
003 (HP)
103 (ÜP)
Internal fault of analogue signal processing
Device defective
- Contact the manufacturer. Specify the trigger for diagnostic purposes.
004 (HP)
104 (ÜP)
Internal resistance of ceramics of the O
2
electrode
/1 R
ki
O
2
too high. Internal resistance of ceramics of O
2
for LT3-F over 50 ,
tolerance time of 30 s.
/2 R
ki
O
2
too low. Internal resistance of ceramics of O
2
under 10 , tolerance
time of 30 s.

Lamtec LT3 Specifications

General

Brand	Lamtec
Model	LT3
Category	Measuring Instruments
Language	English