Diehl Hydrus Manual de instalación y uso - Página 13
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9.
Messages in the display
9.1 Error messages
Visual indication on the LC display in the event of an error
Error
Description
code
C1
Basic parameters in the flash or RAM destroyed (replace the
HYDRUS).
E1
Faulty temperature measurement (temperature out of range,
sensor short, sensor open).
In the event of a sensor short or a sensor open, replace the
HYDRUS.
E4
Hardware fault, defective ultrasonic transducer or short circuit
ultrasonic transducer (replace the HYDRUS).
E5
Too frequent readout (no communication possible).
E7
No ultrasonic signal, air in the measurement section.
9.2 Alarm messages
Constant visual indication on the LC display in the event of an alarm
Alarm
Description
code
A1
Reverse flow
A3
No consumption
A4
Malfunction / failure of the ultrasonic or temperature measure-
ment
A5
Leakage alarm
A6
Low temperature (below 37 °F)
A7
Air in the measurement section, no volume measurement
A9
Low battery charge
HYDRUS
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