6. Faults
In the event of any faults, first check whether the flow switch is mounted correctly, mechanically and electrically.
If complaint is unjustified, the handling costs will be charged.
Error display
Via the instrument's display internal errors are shown.
The following table shows the error codes and their meaning.
Error code
Description
ATT1
On changing the switch point, the system automatically reduces the reset point.
ATT3
Password entered for menu access is incorrect
ATT4
TAG cannot be shown in the display (e.g. special characters)
ERR
Internal error
OL F
Measuring range flow exceeded ≥ 10 % (display flashing)
OL T
Measuring range temperature exceeded ≥ 5 °C (display flashing)
UL T
Below measuring range temperature ≤ 5 °C (display flashing)
Acknowledgement of an error display by pressing the "Enter" key.
Fault
No output signal
No output signal/cable break
No output signal
No/wrong output signal
Wrong output signal
WIKA operating instructions flow switch, model FSD-3
Possible cause
Cable break
Mechanical load too high
No/wrong power supply
Wiring error
Process temperature out of measuring
range; sensor drift caused by overtemper-
ature
Probe break/short circuit
Measure
Check the continuity
Replace probe with a suitable design
Rectify the power supply
Observe the pin assignment
Check temperature range
Send the instrument to the manufacturer
EN
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