Protections And Alarms - Tech Controllers L-7 User Manual

User's manual
VI.

Protections and alarms

In order to ensure safe and failure-free operation, the regulator has been equipped with a
range of safeguards. In case of an alarm, a sound signal is activated and the display shows
a message informing about the detected problem.
Automatic sensor control
In the event of temperature sensor or external sensor damage, an alarm is activated and
the display shows an appropriate message, e.g.: „Alarm: no communication".
The alarm remains active until the fault is removed (the sensor battery or the sensor itself
is replaced) and alarm is deleted in the external controller
How to delete the zone alarm in the external controller
Select the zone in which the alarm occurred (indicated by the exclamation mark instead of
the number). Press EXIT – two options appear on the screen:
-Reset
The external controller re-attempts to communicate with the sensor (it may take up to
several minutes). Until the communication is established, the valve remains in the alarm
mode (closed – zone temperature reached). If the communication attempt fails, the alarm
activates again.
-Deactivate
This option deactivates the zone altogether. It may be activated again by selecting Activate
in Main menu/Sensors/1..8 zones.
This alarm may also be deactivated via the Internet website. If the alarm is caused by
empty batteries, it is deactivated automatically after the batteries have been replaced.
Fuse
The regulator has a WT 6,3A tube fuse-link (5x20mm) protecting the network.
WARNING
Higher amperage fuse should not be used as it may damage the controller.
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