6 Regular checks
6.1 Checking operation
During normal operation, the alarm indicator lights green continuously to show that everything is OK. When an
alarm is triggered, the display will flash and the indicator will flash 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 sup-
ply heating to the house. Primarily with the compressor, secondarily
with the auxiliary heater. Hot water production will stop to indicate
that something noteworthy has occurred.
In the event of an alarm this is indicated in the display with the text ALARM and an alarm message/alarm code.
Examples of potential alarm messages:
Message
Meaning
OUTDOOR SENSOR Something would likely have happened to the cable connection to the outdoor sen-
sor, the cable itself or the sensor. Check for physical damages. Contact your installer if
the alarm persists.
SUPPLY LINE SENSOR Contact the installer for further assistance.
Other alarm message Try to reset the alarm as follows. If the alarm remains contact your installer.
Resetting the alarm
For alarms that are not reset automatically acknowledgement is required. Acknowledge the alarm by setting
the heat pump to operating mode OFF and then back to the desired operating mode. If the alarm remains con-
tact your installer.
User Guide iTec
Thermia Värmepumpar VUJSI102
23
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