Specifications

30 – Service VMBMH302
The indicator at the bottom of the control panel has two modes:
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Lit continuously, the heat pump has power and is ready to produce heat or hot water
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Flashing, means an active alarm
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NOTE! During a service that consists of replacing the display card, all heat pump settings are lost. If possible,
note all specific settings for the customer’s heat pump before replacement.
12.2 Display
The display shows information about the heat pump’s operation, status and any alarms, in text form. Operating
mode and status, indicated by symbols, are also shown in the lower section which shows the heat pump’s
active processes.
12.2.1 Changing the display language
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To change the display language, press the following sequence of buttons: (5 seconds), , , , , , . Now you
can select language, make your selection using or .
12.2.2 Operating modes
Shows the set operating mode of the heat pump.
Operating mode Meaning
(OFF)
The installation is fully switched off. This mode is also used to acknowledge certain alarms.
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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 system.
HEAT PUMP The control system is controlled so that only the heat pump unit (compressor) is allowed to
operate. In this operating mode peak heating charging (anti-legionella function) of the hot
water will not be run because auxiliary heaters must not be used.
AUX. HEATER The control system 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.
12.2.3 Symbols
The following symbols can appear in the display.
Symbol Meaning
HP Indicates that the compressor is in operation.
LIGHTNING Indicates that the auxiliary heater is in operation.
HOUSE Indicates that the heat pump intends to produce heat to the heating system.
TAP Indicates that the heat pump intends to produce heat to the water heater.
F FLOW
SENSOR
An “F” next to the symbol indicates that a flow sensor 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 fil-
ling starts at the set start temperature. A lightning symbol by the symbol indicates peak hea-
ting charging (anti-legionella function).
SQUARE Either indicates that the operating pressure switch has deployed, or that the pressure pipe
temperature has reached its maximum temperature.