Nibe · Ground Source Heat Pumps
This alarm indicates bad circulation in the brine system, where the temperature of the outgoing brine (BT11) drops below the set minimum temperature and the alarm is set to permanent. This blocks the compressor.
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Check the brine pump is running correctly.
Ensure the brine system has been properly vented.
Verify the brine's freezing point is adequate.
Contact a service technician if issues persist.