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6. Error messages
The meter constantly performs self-diagnostics and can display
various error messages. If an error occurs, the error code is dis-
played in the main loop.
All windows, however, can still be accessed by pressing the key.
The error message disappears automatically as soon as the source of the
error is corrected. All errors that occur for longer than 6 minutes without
interruption, are saved in the error memory.
Error
code
Description
C - 1 Basic parameter error in ash or RAM - Meter must be
replaced
E - 1 Erroneous temperature measurement
Temperature range exceeds [-19.9 °C...190 °C]
Sensor short circuit
Sensor break
E - 3** Temperature sensor mixed up in hot and cold line
E - 4 Hardware error during ultrasonic measuring
Ultrasonic transducer defective
Short-circuit ultrasonic transducer
E - 5 too frequent reading
no M-Bus communication possible for a short time
E - 6** ow direction incorrect
Installation of ow sensor wrong
E - 7 No reasonable ultrasonic receive signal
Air in the measuring path
E - 9 Warning: Running out of battery capacity
** application dependent
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