37
Led warning symbol)
Z.1. Malfunctions with error messages
Malfunctions
If the controller detects a malfunction, the red light
fl
ashes 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
fl
ashes.
To obtain more detailed information on the error, press the key under the warning
or info symbol.
Possible error messages:
Notes for the specialist:
Sensor defective
Means that either the sensor, the sensor input at the controller or the connecting cable is/
was defective.
(Resistance table see „B.2. - Temperature resistance table for Pt1000 sensors“ on page 5)
Collector alarm
Means that the collector has fallen/fell below the temperature set under menu „5.6. - Collec-
tor alarm“ on page 18
Restart
Means that the controller was restarted, for example due to a power failure. Check the
date&time!
Time & Date
This message appears automatically after a mains failure because the time&date have to
be checked, and reset if necessary.
System protection
Collector temperature overshot the set temperature, the solar pump was switched OFF to
prevent damage due to excessive heat.
Collector protection
Collector temperature overshot the set temperature, the solar pump was switched ON to
prevent damage to the collector due to excessive heat.
Recooling
Excessive heat was radiated via the collector to protect the system.
Frost protection
The solar pump was switched on to prevent damage to the collector.
Frequent on / off
When the solar pump is switched off and on more than 5 times in 5 minutes, this message
is displayed.
No
fl
ow
This message is displayed when the solar pump is running and for 5 minutes the dT >=50°C
Pressure: Failure
This message is displayed when pressure monitoring is activated and the limits Pmin or
Pmax are exceeded.
SD card error
This message is displayed when an SD card is detected, but cannot be read or written on.
Danger
Do not try to deal with this yourself.
Consult a specialist in the event of an error!
