Grundfos Conex DIS-G Instrucciones De Instalación Y Funcionamiento página 26

11.7.2 Reading error messages
• In the display mode, change to the next error
messages by pressing the [Down] button.
– If more than one error message occurs, they
are displayed one after the other in the
following order:
Sensor test
fault M2
Sensor test
fault M1
M2 - limit 2
exceeded
M2 - limit 1
exceeded
M1 - limit 2
exceeded
M1 - limit 1
exceeded
The error messages are only displayed if the
corresponding error has occurred.
11.7.3 Sensor faults
If a sensor fault has been detected, the
corresponding LED will light up continuously.
To read the message:
1. Press the [Down] button.
– The following message is displayed:
Sensor test
fault M1
– If a fault in sensor 1 has been detected.
Sensor test
fault M2
– If a fault in sensor 2 has been detected.
2. Check the sensor and cabling, and replace
damaged parts, if necessary.
3. Carry out a manual sensor test again.
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11.7.4 Exceeding limit values
If a limit value of a sensor is exceeded, the following
occurs:
• The LED of the relevant sensor flashes.
• The limit relay switches.
• If the alarm relay is assigned to the exceeded
limit value, it switches as well.
• The relay for limit value 2 and, if assigned, the
alarm relay will switch once the delay time is
over.
To read the message:
1. In display mode, change to the next items by
pressing the [Down] button.
– For example if a limit value is exceeded, the
following message appears:
M1 - limit 1
exceeded
– Here limit value 1 of sensor 1 is exceeded.
Confirming limit value 2
If the exceeding of limit value 2 is set as confirmable,
it is possible to confirm the error message. The relay
for limit value 2 and the connected warning and
protection devices such as the sprinkler system will
be deactivated.
See section 11.4.6 Setting the confirmability of limit
value 2.
Warning
Mortal danger! Use this function only if you
are certain that no large gas breakout has
occurred!
To confirm the exceeding of limit value 2:
1. In the display mode, change to the next items by
pressing the [Down] button until the message of
the exceeded limit value 2 appears.
M1 - limit 2
exceeded
2. Press [OK] to confirm the error message.
M1 - limit 2
confirmed
– Now the relay for limit value 2 and connected
warning and protection devices such as the
sprinkler system are switched off.
3. Remedy the cause of the exceeded limit value.