Danfoss – 21VUBMA102
Message Meaning
LOWPRESS 
ERROR
Alarm that indicates that the low pressure switch has deployed.
MOTOR P 
ERROR
Alarm that indicates that the motor protection has deployed.
BRINEFLOW 
LOW
Appears if the accessory flow switch is installed. Indicates that the flow in 
the brine system is low.
SENSOR Alarm that indicates a faulty sensor.
HEATPUMP 
START 
Indicates that the compressor will start within 30 seconds. The brine 
pump has started.
HEATPUMP+ 
ADD.HEAT
Indicates that heat production is active with both compressor and auxil-
iary heater.
START – -MIN Indicates that there is a heating production demand and will start in the 
specified number of minutes.
ADD. HEAT Indicates that there is an auxiliary heater demand.
Text specific to DHP-A
Appears with applicable heat pump operating status text.
Message Meaning
DEFROST Indicates the temperature for defrost.