Displays - Diehl Metering HYDRUS 171A Guide D'installation

HYDRUS
Display / symbols
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Alarm /
fault
Set day
Reverse volume
10.

Displays

Error display (visual indication on the LC display in the event of an error)
Error code Description
C1 Basic parameter error in flash or RAM - Meter must be
replaced
The meter must be replaced.
E1 Temperature measurement error (temp. outside range,
sensor short-circuit, sensor break)
Meter should be checked in the event of sensor short-cir-
cuit or sensor break
E4 Hardware error, faulty ultrasonic transducer or short-cir-
cuit in ultrasonic transducer
Meter should be checked
E5 Too frequent reading (no communication possible for
short time)
E7* No meaningful ultrasonic signal, air in the measuring path
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