Displays; Normal Operating Statuses; Fault Messages - Buderus WPR 2006 Bedienungsanleitung

9

9 Displays

The current operating status of the heat pump system can be
read from the LC display.

9.1 Normal Operating Statuses

The display shows both normal operating statuses and those that
are required by utility companies or due to safety functions of the

9.2 Fault Messages

Fault messages on the display fall into three broad categories:
Heat pump fault
System fault and
Sensor fault
NOTE
System fault
In mono energy systems, the minimum return set temperature is set if a
heat pump or system fault occurs. Antifreeze (frost protection) is
ensured. By manually switching to the 2nd heat generator operating
mode, the building is heated exclusively using the immersion heater.
E-8
Heat pump does not operate because there is no request for heating pending.
Heat pump operates in heating operation
Heat pump operates with active cooling
Heat pump operates for DHW preparation and heats the hot water cylinder
Heat pump and 2nd heat generator operate in heating operation
The heat pump starts after expiry of the utility company shut-off time. The utility company shut-off
time is specified by the utility company and lasts up to two hours depending on the utility company.
Activation or deactivation is carried out by the utility company.
The heat pump was switched off by an external utility blocking signal on input ID4.
The heat pump cannot start because of the operating temperature limit. The external air
temperature is lower than –15 °C or –20 °C, or higher than 35 °C (safety function). Or the heat
pump was blocked by the "Bivalent-alternative" setting, because the external temperature is lower
than the limit temperature.
The heat pump is switched off because the operating mode, 2nd heat generator (HG2), was
selected. Heat generation is provided by the 2nd heat generator.
Switching to and from the cooling operating mode activates a time delay of 5 minutes. The heat
pump remains switched off during this period.
As with a system fault, this can be caused by a breakage or a sensor which is short circuiting.
Inform your local technician. Details of the fault, the heat pump designation and the software
version of the controller are required for rapid and precise troubleshooting. Depending on the
system type, the following sensors may be defective:
Control sensor
Room temperature sensor
Hot water sensor
Room humidity sensor
External sensor
heat pump. Only information about the relevant system
configuration and HP type are shown on the display.
You only need to inform your after-sales service if there is a heat
pump fault (HP fault). Make a note of the error message and the
software version displayed in the operating data. After rectifying
the problem, press the Esc button to acknowledge the fault.
The following messages may appear on the display.