Danfoss AR05, Operation Instructions Manual, Page: 24 / 25

24 Reglermanual - VMGFF102
6.4 - Alarm codes (cont.)
Alarm No. Alarm
code Alarm description Reset type Probable cause Action taken by the control
Process faults (cont.)
33 P-29 Communication loss with the System
Manager Automatic when communication is
re-established CCN installation bus defective Unit goes into autonomous mode
34 P-30 Communicaiton loss between
master and slave Automatic when communication is
re-established CCN installation bus defective As above
35 MC-nn Master chiller 1 confi guration error Automatic when the master
confi guration returns to normal or
when the unit is no longer in master/
slave mode Master/slave confi guration error Master/slave mode is stopped
36 FC-n0 No factory confi guration Automatic when the confi guration is
entered The unit size has not been
confi gured Unit is shut down
37 FC-01 Illegal factory confi guration number Manual The unit size has been confi gured
with the wrong value As above
38 P-31 CCN emergency stop Manual Network command As above
39 P-32 Fault water pump 1 Manual Pump overheating or poor pump
connection Unit is completely stopped if there
is no emergency pump
40 P-33 Fault water pump 2 Manual As above As above
41 P-37 Repeated high pressure unloading,
circuit A Automatic Transducer defective or fan circuit
fault None
42 P-38 Repeated high pressure unloading,
circuit B Automatic As above As above
43 P-40 Repeated low suction temperature
unloading in heating mode, circuit A Manual Pressure sensor defective or
refrigerant charge too low Circuit is shut down
44 P-41 Repeated low suction temperature
unloading in heating mode, circuit B Manual As above As above
45 P-43 Heat exchanger temperature too
low, less than 10°C, prevents unit
start-up Automatic when the temperature
detected returns to normal or when
the mode returns to cooling Operating compressor protection
out of range or pressure sensor fault The unit cannot start
46 P-97 Reversed entering/leaving water
sensors Manual Sensor defective, sensors reversed Unit is shut down
48 V0-xx Fault, variable fan speed controller,
circuit A Manual or automatic Speed controller fault or alert Alert: The circuit continues to
operate, the speed controller slows
down the motor.
Alarm: The circuit shuts down.
49 V1-xx Fault, variable fan speed controller,
circuit B As above As above As above
50 V3-xx Fault, variable water pump controller
51 Sr-00 Maintenance service alert Manual The preventive maintenance date
has passed
53 P62-2 Water loop control fault, missing
sensor calibration Automatic if the calibration is valid No calibration
P62-3 Water loop control fault, suction
pressure too low Automatic the fi rst time, if the water
system is supplied with water, the
second time manual if it is the same
day Too little water in the system Unit is shut down
P62-4 Water loop control fault, water pump
has not started
P62-5 Reserved
P62-6 Water loop control fault, water pump
overload Automatic Missing pressure head at the water
pump Unit is shut down
P62-7 Water loop control fault, water fl ow
rate fault Manual Serious water leak, casse pompe Unit is shut down
P62-8 Water loop control fault, water
pressure sensors mixed up Automatic Sensors mixed up Unit is shut down
54 P-63 High pressure fault in circuit A Manual Fan fault Circuit is shut down
55 P-64 High pressure fault in circuit B As above As above As above
56 P-99 Refrigerant leak detected Automatic Refrigerant leak or solvent present in
the machine atmosphere No action