113
Status display Stat
The stats display offers information in special system situations and when problems occur.
It is primarily intended for us with solar power systems but can also be useful with other
diagrams. The status display can, however, then only be set off due to an active function
check or defective sensors S1 to S6. In solar applications, there a five status ranges:
Function check and collector excess temperature not active = no system response is
analyzed. Only a bar appears in the display under
Stat.
Collector excess temperature is active = the excess temperature that occurs at the
collector during system standstill only displays
CETOFF (collector excess temperature cut-
off active) under Stat during this time.
Function check is active = monitoring for interruptions (IR) / short circuits (SC) of
sensors and circulation problems (if also activated). If the output is active and the
differential temperature between the sensors is greater than 60K for more than 30
minutes, the error message
CIRCER (circulation error) is issued. The index in the lower
display line shows the output where a circulation error has occurred.
Legionella protection function is active = During the runtime RT “LEGION” is
displayed under
Stat.
Drain-back function with low water protection is active = in the event of low water
Stat DB ERR is displayed and the solar pump switched off. A reset is only possible if the
controller is switched off and on.
Error messages remain displayed (and
Stat blinks) even after the error has disappeared;
they have to be deleted in the status menu via the command
CLEAR.
You can only enter the status menu if there has been an error. Then,
ENTER is displayed
instead of
OK or CETOFF in Stat.
OK appears under Stat if the monitoring functions are activated and the system is running
well. If anything special happens,
Stat blinks regardless of the display position.
If one of the two control outputs is set to "
STAT N" or "STAT I" and the function control is
activated, then if any of the errors "sensor open circuit, sensor short-circuit or circulation
error" occur, the control output is switched over. Subsequently an auxiliary relay can be used
to forward this error message to a signalling device. Upon collector excess temperature
switch-off
CETOFF, the control output does not switchover.
To Next Page
Loading...
Need help?
General
