User's Manual

Page 52 SITRANS LC 500 – INSTRUCTION MANUAL 7ML19985GE01
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Troubleshooting
Troubleshooting: SITRANS LC 500
If you are unable to change settings:
• check that keylock level (menu 1F) is set to 0: the display should read PL = 0
• check that menu 01 is set appropriately: if Pv = 1, changes can only be made via
HART
If you can change settings:
• reset menu 12 to factory settings: press both buttons, and the display should
read FAC A
If the LCD displays a negative reading, typically around minus 300 pF, this often indicates
a short circuit in the probe assembly:
• check the enclosure and make sure no water has got in
• check that all the connections in the probe assembly are solid