35
P-01 Water heat exchanger frost protection Automatic if the same alarm has
not tripped during the last 24
hours, otherwise manual
Water ow rate to low or
defective thermistor
Unit is shut down
P-05 Low suction temperature, circuit A Automatic when the temperature
returns to normal, and if this alarm
has not appeared during the last
24 hours, otherwise manual
Pressure sensor defective,
EXV blocked or low
refrigerant charge
Circuit is shut down
P-06 Low suction temperature, circuit B As above As above As above
P-07 Low suction temperature, circuit C As above As above As above
P-08 High superheat, circuit A As above As above
If free-cooling option is
used: 3-way valve position
incorrect
As above
P-09 High superheat, circuit B As above As above As above
P-10 High superheat, circuit C As above As above As above
P-11 Low superheat, circuit A As above As above
If free-cooling option is
used: 3-way valve position
incorrect
As above
P-12 Low superheat, circuit B As above As above As above
P-13 Low superheat, circuit C As above As above As above
P-14 Water ow control and customer interlock fault Automatic if the unit is in manual
shut-down status, otherwise
manual
Evaporator pump defect or
water ow switch fault
Unit is shut down
P-15 Condenser water ow controller fault Manual Sensor defective The heat reclaim mode is stopped
P-16 Compressor A1 not started or no pressure increase Manual Connection problem Compressor is shut down
P-17 Compressor A2 not started or no pressure increase Manual Connection problem As above
P-18 Compressor A3 not started or no pressure increase Manual Connection problem As above
P-19 Compressor A4 not started or no pressure increase Manual Connection problem As above
P-20 Compressor B1 not started or no pressure increase Manual Connection problem As above
P-21 Compressor B2 not started or no pressure increase Manual Connection problem As above
P-22 Compressor B3 not started or no pressure increase Manual Connection problem As above
P-23 Compressor B4 not started or no pressure increase Manual Connection problem As above
P-24 Compressor C1 not started or no pressure increase Manual Connection problem As above
P-25 Compressor C2 not started or no pressure increase Manual Connection problem As above
P-26 Compressor C3 not started or no pressure increase Manual Connection problem As above
P-27 Compressor C4 not started or no pressure increase Manual Connection problem As above
P-28 Control box thermostat or phase reversal detected Automatic when the contact closes
again
Control box badly
ventilated or poor
electrical connection
Unit is shut down
P-29 Communication loss with the System Manager Automatic when communication is
re-established
CCN installation bus
defective
Unit goes into autonomous mode
P-30 Communicaiton loss between master and slave Automatic when communication is
re-established
CCN installation bus
defective
As above
MC-nn Master chiller No. 1 conguration error at nn Automatic when the master
conguration returns to normal or
when the unit is no longer in
master/slave mode
Master/slave conguration
error
Master/slave mode is stopped
FC-n0 No factory conguration Automatic when the conguration
is entered
The unit size has not been
congured
Unit is shut down
FC-01 Illegal factory conguration number Manual The unit size has been
congured with the wrong
value
As above
P-31 CCN emergency stop Manual Network command As above
P-32 Fault water pump 1 Manual Pump overheating or poor
pump connection
Unit is completely stopped if there is
no emergency pump
P-33 Fault water pump 2 Manual Pump overheating or poor
pump connection
As above
P-34 Reclaim operation failure, circuit A Manual Sensor defective or low
condenser water ow rate
The heat reclaim mode of the circuit
is stopped
P-35 Reclaim operation failure, circuit B Manual Sensor defective or low
condenser water ow rate
As above
P-37 Repeated high pressure unloading, circuit A Automatic Transducer defective or
ventilation circuit fault
None
P-38 Repeated high pressure unloading, circuit B Automatic As above As above
P-39 Repeated high pressure unloading, circuit C Automatic As above As above
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
P-41 Repeated low suction temperature unloading in
heating mode, circuit B
Manual As above As above
P-42 Repeated low suction temperature unloading,
circuit C
Manual As above As above
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
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