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st
Issue 10/00 14
DMP025E
Weekly schedule:
MON
TUE
WED
THU
FRI
SAT
SUN
1
1
1
1
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All controllers are set in Automatic Control
SELF AND SYSTEM TESTS
The control unit is equipped with self-test functions:
•
Clock misfunctioning.
•
Data memory misfunctioning.
•
Outside sensor misfunctioning.
In presence of one of the former anomalies, the communication with
the controllers is interrupted; the latter, after 10 minutes have
elapsed, pass to stand-alone operation with set point at 20
°
C.
Moreover, there are system diagnostic functions:
•
Misfunctioning of one or more controllers.
•
Damaged serial bus.
When even if only one of the above-mentioned conditions occurs, an
intermittent red signal, on the control unit front panel, is activated: by
pushing the TEST key it is possible to detect the specific cause of
misfunctioning.
F
THE OUTSIDE SENSOR MISFUNCTIONING IS DISPLAYED IN
THE “CONTROLLER STATUS PAGE” BY TYPING ”---“ INSTEAD
OF THE TEMPERATURE VALUE DISPLAY.
It is, moreover, possible to display the status of the digital inputs
(S/W qualifications and changeovers) in order to check the
correctness of the related connections.