3 x Operation
18
BA ROTEX HPSU compact 2 - 04/2011
Manual test run
To check whether the cooling and heating functions and the hot water supply is working correctly, you can initiate a manual test
run at any time.
• Press key 4x in a row.
Î The icon is displayed.
Î If no other key is pressed within 10 s, the main control unit (HPR1) returns to normal operation.
You can also abort a test run by pressing the key once.
• Test the operating modes as follows:
– Room heating or room cooling mode :
Use the key to select the operating mode. Start the test run by pressing the key once.
– Water heating:
Press key 1x. The test run starts automatically.
Î The test run ends automatically after 30 min or if the temperature set has been reached.
You can also abort a test run by pressing the key once.
Î The main control unit (HPR1) returns to normal operation or if there are faulty connections or a malfunction, a fault
code is displayed on the user interface.
3.3.7 Operating modes
Room heating
In this operating mode, heating operation is active and automatically regulated on the basis of the target value set for the flow
temperature.
To prevent the rooms from overheating, the room heating is switched off as soon as the outside temperature exceeds a certain
value (set by parameters [4-02]).
If the program clock of the main control unit (HPR1) is switched on, the system automatically regulates in accordance with
the settings in the timer programs. Setting the switching times for the flow temperature control is described in chapter 3.3.8.
The target temperature for room heating can only be set manually.
During this process, the display of the main control unit (HPR1) shows the "adjustment value" that can be set by the user instead
of the target flow temperature. This adjustment value is the temperature difference between the target temperature calculated
by the control system and the actual target flow temperature (e.g. a positive adjustment value means that the actual target
temperature is not higher than the calculated target value.).
If the function "Weather dependent target value regulation" ( key) is activated, the target flow temperature is
automatically set in heating operation based in the outside temperature.
• Press key to change to the operating mode room heating.
Î Icon is shown in the display of the main control unit (HPR1).
To display the fault code most recently remedied, proceed as follows:
• Press key 1x.
• Press key 4x consecutively to return to normal operation.
Only with installation of backup heater (BUH):
Information on fault codes and the procedure for resolving faults can be found in the installation manual for the
backup heater (BUH).
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