Diehl Hydrus 171A - Displays; Error Display

-22-
Display / symbols
Forward ow
Reverse
ow
Alarm /
fault
Reverse volume
Calibration
value
Button
Set day
Forward volume
Test mode
Flow informa-
tion arrow
Service
value
Water volume
information
arrow
10. Displays
Error display (visual indication on the LC display in the event of an error)
Error code Description
C1 Basic parameter error in ash 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
HYDRUS
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