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WIKA operating instructions temperature switch model TSD-30
GB
11613025.02 12/2011 GB/D/F/E
8. Faults
Error code Description
ATT1
On changing the switch point, the system automatically reduces the reset point
ATT3
Password entered for menu access is incorrect
ERR
Internal error
OL
Measuring range exceeded > approx. 5 % (display blinks)
UL
Below measuring range < approx. 5 % (display blinks)
Acknowledgement of an error display by pressing the "Enter" key.
Problem
Possible cause
Measure
No output signal
Cable break
Check the through drilling
No output signal / line break
Mechanical load too high
Replace sensor with a suitable design
No output signal
No/wrong power supply
Rectify the power supply
No/wrong output signal
Wiring error
Observe the pin assignment
Wrong output signal
Process temperature out of range;
Sensor drift caused by overtemperature
Sensor burnout/short circuit
Check temperature range
Send the instrument to the manu-
facturer
Wrong output signal
Sensor drift caused by chemical attack
Check media compatibility
Wrong output signal and too long
response time
Wrong mounting geometry, for example
mounting depth too deep or heat dissi-
pation too high
Deposit on the sensor
Move the temperature-sensitive area
of the sensor into the medium
Remove deposit
Signal span too small
Power supply too high/low
Rectify the power supply
Signal span drops
Humidity has entered
Assemble the cable correctly
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