Protections And Alarm - Polypipe UFH8ZMP User Manual

User's manual
VII. Protections and alarm
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.
Temperature protection.
UFH8ZMP external controller is equipped with thermal protection which disconnects
UFH8ZMP from the power supply when the protection temperature has been exceeded.
WARNING
!!!This item must be connected in order to start the controller.!!!
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.: „Sensor damaged".
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.
Fuse
The regulator has a WT 3,15A 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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