Alarm Statuses And Error Messages; Alarm Value *01*/*02; Water Sensor *09* / Temperature Sensor *12; Calibration Errors *13*/*14*/*10 - Grundfos Conex DIS-D Instrucciones De Instalación Y Funcionamiento

10. Alarm statuses and error
messages
Alarms are indicated by the flashing of the alarm
LED and a displayed code. Various additional alarm
actions are carried out depending on the alarm.
If several alarms are present, the most recent alarm
is displayed. Earlier alarms are not deleted by
additional alarms.
No alarms are signalled during operation of the
instrument in the menu code, SP. The alarms still
present are only evaluated when the respective
menu is left.

10.1 Alarm value *01*/*02*

*01*: Downward violation of the set alarm value.
The alarm is displayed if the current value is below
the set value.
*02*: Upward violation of the set alarm value.
The alarm is displayed if the set value is exceeded.
See section 9.6.11 Adjustment of alarm
• The alarm LED flashes.
• The displayed code flashes.
• The alarm relay is switched (floating output).
To acknowledge the alarm, press [OK].
• The alarm relay is reset.
• The alarm is still indicated by the flashing of the
alarm LED and the coded display output.
All alarm actions are reset when the fault is no longer
present.
10.2 Water sensor *09* /
temperature sensor *12*
*09*: Water sensor
The alarm is displayed when the water sensor is
displayed for AQC-D1/-D11 and AQC-D3/-D13
measuring cells, or when the input frequency is
outside the tolerance range for AQC-D2/-D12
measuring cells.
*12*: Temperature sensor
®
(only with Conex DIS-PR)
The alarm is displayed if the temperature
measurement violates the measuring range.
• The alarm LED flashes.
• The coded display output flashes.
• The alarm relay is switched (floating output).
• The controller is stopped.
To acknowledge the alarm, press [OK].
• The alarm relay is reset.
• The alarm is still displayed by the flashing of the
alarm LED and the coded display output. The
controller remains at stop.
All alarm actions are reset when the fault is no longer
present.
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10.3 Calibration errors *13*/*14*/*10*/*11*

The following alarms can only occur during
calibration. The calibration errors are displayed as
follows:
• The alarm LED flashes.
• The coded display output flashes.
*13*: Gradient error
The alarm is displayed if the plausibility check of the
pH calibration data establishes an upward/downward
violation of the gradient range from -50 to -62 mV/
pH.
*14*: Asymmetry error (only with Conex
The alarm is displayed if the plausibility check of the
pH calibration data establishes an upward/downward
violation of the accuracy range from -60 to +60 mV.
*10*: Auto read time-out error
(only with Conex
The alarm is displayed if the combination electrode
does not reach a stable signal within the defined time
period (120 s).
value.
*11*: pH difference (only with Conex
The alarm is displayed if a fault exists in the
combination electrode or if an incorrect buffer has
been used (difference in pH of selected buffer
solutions < 1.00 pH).
The respective alarm actions together with
elimination of faults are described in the respective
calibration sections.
See section
dioxide or ozone; Conex
See section
®
Conex
See section
DIS-PR.
®
DIS-PR)
9.6.5 Calibration for chlorine, chlorine
®
DIS-D.
9.6.6 Calibration of the pH value;
DIS-PR.
9.6.7 Calibration of redox value; Conex
®
DIS-PR)
®
DIS-PR)
®