Xylem IQ SensorNet FDO 70x IQ (SW) - Manual (Page 34)

What to do if... FDO
®
70x IQ (SW)
6 - 2 ba76014e01 02/2012
Measured value invalid
( "----" displayed)
Incorrect temperature
display
Cause Remedy
– User calibration unsuccessful.
The sensor is blocked for mea-
surement.
– As a temporary measure to
quickly restore the readiness
for service: Activate the fac-
tory calibration (see section
4.2.5)
– For exact measurements,
carry out a function check and
repeat the user calibration if
necessary.
Cause Remedy
– Temperature sensor defective – Return the sensor