6 Regular checks
6.1 Checking operation
During normal operation, the alarm indicator lights green continuously
to show
that everything is OK. When the alarm is triggered, it flashes green at
the same time as a text message is shown in the display.
Regularly check the alarm indicator to
ensure that the installation is working
correctly. In event of alarm the heat
pump will if possible supply heating
to the house, primarily with the com-
pressor, secondarily with the auxiliary
heater. Hot water will stop to indicate
that something noteworthy has occur-
red.
In event of alarm this is indicated in the display with the text ALARM and
an alarm message. The potential alarm messages are:
Message Meaning
HIGH PRESSURE
ERROR
The heating circuit is the heat pump's high pressure cir-
cuit.
Check, and, if necessary, rectify the circuit level as below.
Reset the alarm as follows
LOW PRESSURE
ERROR
The brine circuit is the heat pump's low pressure circuit.
Check the circuit level as below. Contact the service tech-
nician.
User manual VUBMA902 – 21
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