INSTALLATION
Appendix
84
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19. Appendix
19.1 Fault table
Message
Class
Description
High pressure switch
A
High pressure switch activated
Low pressure
A
Paused at low pressure, more than 5 times in 5 hours
High discharge temperature
A
Paused at high discharge temperature, more than 3 times in 8 hours
High pressure
A
Paused at operating pressure, more than 5 times in 5 hours
Sensor drain line
A
Sensor alarm
Liquid line sensor
A
Sensor alarm
Suction gas sensor
A
Sensor alarm
Refrigerant flow/pressure low
A
Pressure or flow switch
IO temp. calibration
A
BM card, deviation when calibrating the temperature sensor
IO AI calibration
A
BM card, error deviation when calibrating the transmitter
IO stepper motor
A
BM card, deviating parameters expansion valve motor; recalibrate the machine profile
IO settings
A
The BM card has not been configured correctly in the machine profile menu
IO phase monitoring
A
BM card, one or more phases have dropped out
Inverter (x–x)
A
Inverter alarm, more than 3 stops in 2 hours
Low superheating
A
Paused at low superheating, more than 5 times in 5 hours
Pressure ratio
A
Paused at pressure ratio, high and low pressure side of the compressor, more than 5 times in 5
hours
Outside operating range
A
Paused at operating range limit, more than 5 times in 5 hours
Refrigerant temp.
A
Paused at refrigerant monitoring, more than 5 times in 5 hours
Inverter communication
A
The CM card (control module) has lost the Modbus communication connection to the converter
Machine profile
A
Reconfigure the machine profile menu
No BM card found
A
No BM card detected; a reboot is required
Refrigerant inlet sensor
B
Sensor alarm
Refrigerant outlet sensor
B
Sensor alarm
Condenser inlet sensor
B
Sensor alarm
Condenser outlet sensor
B
Sensor alarm
Outside sensor
B
Sensor alarm
System flow sensor
B
Sensor alarm
Heating circuit sensor 1
B
Sensor alarm
Heating circuit sensor 2
B
Sensor alarm
Heating circuit sensor 3
B
Sensor alarm
Heating circuit sensor 4
B
Sensor alarm
Heating circuit sensor 5
B
Sensor alarm
Heating circuit sensor 6
B
Sensor alarm
Heating circuit sensor 7
B
Sensor alarm
Heating circuit sensor 8
B
Sensor alarm
DHW charge system sensor
B
Sensor alarm
DHW control sensor
B
Sensor alarm
Cool cylinder sensor
B
Sensor alarm
Cooling circuit flow sensor
B
Sensor alarm
Cooling circuit return sensor
B
Sensor alarm
Maximum temperature differential refrigerant
B
Differential refrigerant exceeds the setpoint “Alarm limit brine delta”
Sensor DHW centre
B
Sensor alarm
DHW return
B
Sensor alarm
HGW sensor
B
Sensor alarm
Maximum refrigerant ON temp.
B
The refrigerant ON temperature is above the required limit for the refrigerant monitoring
Minimum refrigerant ON temp.
B
The refrigerant ON temperature is below the required limit for the refrigerant monitoring
Minimum refrigerant OFF temp.
B
The refrigerant OFF temperature is below the required limit for the refrigerant monitoring
Error, humidity sensor (room)
B
Sensor alarm
Flow sensor, surplus heat
B
Sensor alarm
Return sensor, surplus heat
B
Sensor alarm
Return sensor, cooling
B
Sensor alarm
Pool sensor return
B
Sensor alarm
End cylinder sensor DHW
B
Sensor alarm; TWC anti-legionella function must be activated
Max. anti-legionella function time exceeded
B
The anti-legionella function was not completed within 3.5 hours of starting
Buffer cylinder sensor
B
Sensor alarm
TWC return min.
C
Low temperature in circulating water according to alarm settings for TWC DHW return temper-
ature
TWC control min.
C
Low TWC temperature according to alarm settings for TWC DHW flow temperature
Heating circuit 1 control
C
Temperature deviation in accordance with alarm settings for distributor circuit 1
