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We reserve the right to make technical changes | 83055600dUK – Translation of the original instruction manual (HMD 2) | ait-deutschland GmbH
Emergency mode
The emergency mode provides heating operation and domestic
hot water preparation as well as the frost protection function and
the screed heating program even if, after switching on the con-
troller voltage
●
one or more basic system components were not detected
during the self test,
●
however, at least the system components required for the
emergency mode were detected during the self test.
The emergency mode is activated automatically.
A connection error is first displayed on the screen of the heating
and heat pump controller.
Im Bildschirm des Heizungs- und Wärmepumpenreglers wird zu-
nächst ein Kommunikationsfehler ausgegeben.
Example of a connection error displayed on the screen.
Beispiel eines im Bildschirm angezeigten Kommunika-
tionsfehlers
The navigation screen is displayed by turning the “rotary push-
button”.
If the emergency mode is active, corresponding warning symbols
are shown in the standard screen.
During the emergency mode, the compressor request is locked.
To ensure heating operation and domestic hot water preparation,
set the “2nd heat gen.” option as the “Heating” operating mode
and the “Domestic hot water” operating mode.
During the emergency mode, the search for missing system com-
ponents continues in the background.
If the missing components are detected during the emergency
mode, the system is automatically restarted.
The setting of the operating modes “Heating” and “Domestic hot
water” must be manually reset to “Auto(matic)”.
