Alarm Codes (Cont.) - Danfoss BW10 020-090 Operation Instructions Manual

6.4 - Alarm codes (cont.)

Alarm No. Alarm Alarm description
code
Process faults (cont.)
42 P-30 Communicaiton loss between master
and slave
43 P-31 CCN emergency stop
44 P-37 Repeated high-pressure unloading,
circuit A
45 P-38 Repeated high-pressure unloading,
circuit B
46 P-40 Repeated low suction temperature
unloading
47 P-41 Repeated low suction temperature
unloading
48 P-43 Temperature at heat exchanger too
low, less than 10°C prevents unit
start-up
49 MC-nn Master chiller configuration error
50 FC-n0 No factory configuration
51 FC-01 Illegal factory configuration number
52 Sr-00 Maintenance service alert
53 V3-xx Fault, variable evaporator water
pump controller
54 V4-xx Fault, variable condenser water
pump controller
55 P62-2 Evaporator water loop control fault,
missing sensor calibration
P62-3 Water loop control fault, suction
pressure too low
P62-4 Water loop control fault, water pump
has not started
P62-5 Reserved
P62-6 Water loop control fault, water pump
overload
P62-7 Water loop control fault, water flow
rate fault
P62-8 Water loop control fault, water
pressure sensors mixed up
56 P61-2 Evaporator water loop control fault,
missing sensor calibration
P61-3 Water loop control fault, suction
pressure too low
P61-4 Water loop control fault, water pump
has not started
P61-5 Reserved
P61-6 Water loop control fault, water pump
overload
P61-7 Water loop control fault, water flow
rate fault
P61-8 Water loop control fault, water
pressure sensors mixed up
57 P-63 High pressure fault in circuit A
58 P-64 High pressure fault in circuit B
59 P-97 Reversed evaporator entering/
leaving water sensors
60 P-99 Reversed condenser entering/leaving
water sensors
22
Reset type
Automatic when communication is
re-established
As above
Automatic
As above
Manual
As above
Automatic if the temperature
detected returns to normal or when
the mode returns to cooling
Automatic when the master
configuration returns to normal or
when the unit is no longer in master/
slave mode
Automatic when the configuration is
entered
Manual
Manual
Automatic
As above
Automatic if the calibration is valid
Automatic the first time, if the water
system is supplied with water, the
second time manual if it is the same
day
Manual
Automatic
Manual
Automatic
Automatic if the calibration is valid
Automatic the first time, if the water
system is supplied with water, the
second time manual if it is the same
day
Manual
Automatic
Manual
Automatic
Manual
As above
Manual
Manual
Probable cause
CCN installation bus defective
Network command
Transducer defective or fan circuit
fault
As above
Pressure sensor defective or
refrigerant charge too low
As above
Operating compressor protection
out of range or pressure sensor fault
Master/slave configuration error
The unit size has not been configured Unit is shut down
The unit size has been configured
with the wrong value
The preventive maintenance date
has passed
Fault in the variable speed controller Unit is shut down
As above
No calibration
Too little water in the system
Pump fault
Missing pressure head at the water
pump
Serious water leak, pump faulty
Sensors mixed up
No calibration
Too little water in the system
Pump fault
Missing pressure head at the water
pump
Serious water leak, pump faulty
Sensors mixed up
Fan fault
As above
Sensor defective, sensors reversed
Sensor defective, sensors reversed
Action taken by the control
Unit goes into autonomous mode
As above
None
As above
Circuit is shut down
As above
The unit cannot start
Master/slave mode is stopped
As above
As above
As above
Unit is shut down
As above
Unit is shut down
Unit is shut down
Unit is shut down
As above
Unit is shut down
As above
Unit is shut down
Unit is shut down
Unit is shut down
Circuit is shut down
As above
Unit is shut down
Unit is shut down