Installation guide

31
VMBME102
12.2 Display
The display of the control computer shows information about the heat pump’s operation, status and any alarms, in text form. The status,
indicated by symbols, is also shown in the lower section which shows the heat pump’s active process.
Operating mode
Appears with applicable heat pump operating status text.
Operating mode Meaning
(OFF)
The installation is fully switched off.
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Remember that if the operating mode OFF is to be used for long periods during
the winter, the water in the heating system in the installation must be drained,
otherwise there is a risk of frost damage.
AUTO The heat pump and the auxiliary heater are automatically controlled by the control compu-
ter.
HEATPUMP The control computer is controlled so that only the heat pump unit (compressor) is allowed
to operate.
ADD. HEAT The control computer only permits the auxiliary heater to be in operation. This operating
mode can be used when a new installation is being used, when the brine system is not
ready for operation.
HOT WATER In this mode the heat pump only produces hot water, no heat goes to the heating system.
Symbols
Displays the operating status of the heat pump using symbols.
Symbol Meaning
HP Indicates that the compressor is in operation. An “F” next to the symbol indicates that a flow
switch is installed.
LIGHTNING Indicates that the auxiliary heater is in operation. Number of auxiliary power stages indicated
by digit.
HOUSE Indicates that the 3-way valve position is for heat production for the house.
TAP Indicates that the 3-way valve’s position is for hot water production.
VL SYSTEM Indicates the set system VL / D / VL+F / D+F (+F indicates that a flow switch is installed)
CLOCK Indicates that tariff control is active.
TANK Indicates the level of hot water in the water heater. During charging, the tank is filled and fill-
ing starts at the set start temperature. A lightning symbol by the symbol indicates peak heat-
ing charging (legionella function).
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SQUARE Either indicates that the operating pressure switch has deployed, or that the hot gas tempera-
ture has reached its maximum temperature.
DEFROST Displayed if defrosting is active.
FAN Displayed if the fan is active L=Low speed and H= High speed.
Text
Appears with applicable heat pump operating status text.
Message Meaning
ROOM --°C Shows the set ROOM value. Standard value: 20°C.
If the accessory room sensor is installed it shows the desired indoor temperature within
brackets and the actual temperature.
ERR PHASE SEQ. Alarm that indicates that there is an incorrect phase sequence to the compressor. Only dis-
play and only the first 10 minutes.
HIGH RETURN Alarm that indicates that the high return temperature prevents the compressor’s operation.
START Indicates that there is a demand for heating production and that no start delay is active.
EVU STOP Indicates that the additional function EVU is active. This means that the heat pump is off as
long as EVU is active.