Displays; Alarm Messages - Diehl Metering 171A/B Instructions De Montage Et D'utilisation

HYDRUS
10.

Displays

Error display (visual indication on the LC display in the event of an error)
Fault code
C1
E1
E4
E5
E7*
EH
Alarms (Permanent visual indication on the LC display)
Alarm
messages
A1
A3
A4
A5
A6
A7*
A9
AH
*) If air is trapped in the measuring path, E7 is output to the display. After
a defined time (standard 15 min.) the E7 changes to an A7. The A7 is
output to the display and saved in the fault memory.
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Description
Basic parameter error in flash or RAM - Meter must be
replaced
The meter must be replaced.
Temperature measurement error (temp. outside range,
sensor short-circuit, sensor break)
Replace meter if sensor short-circuit or sensor break
Hardware error, faulty ultrasonic transducer or
short-circuit
in ultrasonic transducer
The meter must be replaced.
Too frequent reading
(no communication possible for short time)
No meaningful ultrasonic signal, air in the measuring
path
Flow overload
Description
Reverse flow
no consumption
Fault / failure of ultrasonic or temperature measurement
Leakage alarm
Low temperatures (below 3°C)
Air in the measuring path, no volume measurement
Low battery
Overload alarm
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