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F.2. STATUS INDICATION AND ERROR MESSAGES
The status is signalled by the LED light that
• is lit green – when a relay is switched on
• is lit red - when Auto mode is set and all relays are off
• flashes slowly red – when Manual mode is set
• flashes fast red - when an error is present
If the controller detects a malfunction, the red light flashes
and the warning symbol also appears in the display. If the
error is no longer present, the warning symbol changes
to an info symbol and the red light no longer flashes. To
obtain more detailed information on the error, press the key
under the warning or info symbol.
Possible error messages:
Meaning
Sensor X defective
Means that either the sensor, sensor entrance on the
controller or the connecting wire is defective.
Restart
Means that the controller was restarted, for example,
due to a power outage. Check date & time!
Time & Date
This display appears automatically after a power
supply disruption, because the time & date must be
examined and, if applicable, adjusted.
Max. flow reached
The max. heating circuit temperature has been
reached.
Frequent on/off
A relay switches frequently, i.e. opens and closes more
than 5 times in 5 minutes.
