33We reserve the right to make technical changes | 83055600dUK – Translation of the original instruction manual (HMD 2) | ait-deutschland GmbH
NOTE
If the error message “Power screed heating” appears (= er-
ror number 730), this is only an indication that the screed
heating program could not process a ow temperature
level in the specied time interval. The screed heating pro-
gram continues to run nevertheless. The error message
can only be acknowledged if the screed heating program
has nished or has been manually switched o
As long as the screed heating program is running, the corre-
sponding program symbol
will appear in the navigation screen:
Manually terminating screed heating program
Starting screed heating program
NOTE
While the screed heating program is running, -10°C is dis-
played as the outdoor temperature. It is not possible to
heat water.
NOTE
In the screed heating program, all connected heat generators
are released if necessary. However, the following applies:
A heating system is designed for heating in general and
not for heating screed. It may therefore be necessary for
the screed heating phase to integrate additional heat gen-
erators in the system.
The menu is not shown in full here.
scroll down the screen.
Answer the conrmation prompt.
NOTE
If you respond to the conrmation prompt with , the
screen will change back to the menu “Screed heating”.
After starting the screed heating program, the programmed ow
temperature levels are automatically executed in succession.
The time interval set for a ow temperature level is not necessar-
ily the actual time which is necessary to reach the next ow tem-
perature level. Depending on the heating system and power of
the heat pump, it may take varying lengths of time until the next
ow temperature level is reached.
If a ow temperature level is not reached on account of too low a
heating power, a corresponding error message will appear in the
screen. The error message informs you about the ow tempera-
ture level which has not been reached. However, the screed heat-
ing program continues running and attempts to reach the next
ow temperature levels.
NOTE
After expiry of a ow temperature level, the relevant time
interval is set to “0h”. This ensures that the screed heating
program continues after a potential power failure at the
start of each ow level at which it was interrupted.
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