Filter
Top Products
Order No. 13444-76, 06.2005. Supersedes order No.: 13429-76, 06.2004. Manufactured by: Carrier s.a., Montluel, France.
Manufacturer reserves the right to change any product specification without notice. Printed in the Netherlands on chlorine-free paper.
A
LARM
C
ODE
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55-2
55-4
55-5
55-6
ALARM NAME
Low refrigerant pressure failure,
circuit A
Low refrigerant pressure failure,
circuit B
High pressure failure, circuit A
High pressure failure, circuit B
Reverse compressor rotation,
circuit A
Reverse compressor rotation,
circuit B
Water heat exchanger frost
protection
Repeated low evaporator
suction temperature unloading,
circuit A
Repeated low evaporator suction
temperature unloading, circuit B
Repeated high pressure
unloading, circuit A
Repeated high pressure
unloading, circuit B
Repeated high discharge
temperature unloading in
heating mode, circuit A
Repeated high discharge
temperature unloading in
heating mode, circuit B
Repeated low suction
temperature unloading in
heating mode, circuit A
Repeated low suction
temperature unloading in
heating mode, circuit B
Low heat exchanger entering
water temperature in heating
mode
Safety interlock open
Pump #1 fault
Pump #2 fault
CCN emergency stop
Loss of communication with
System Manager
Communication failure with the
master or the slave unit
Initial factory configuration
required
Illegal factory configuration
Master/slave configuration error
Maintenance alerts
Water loop flow rate too low
Maintenance delay, pump 1,
elapsed
Maintenance delay, pump 2,
elapsed
Maintenance delay, water filter,
elapsed
ALARM DESCRIPTION
Circuit running and the suction pressure
below threshold
As above
Circuit running and the discharge pressure
exceeds the high pressure trip point
As above
One circuit compressor runs in reverse
rotation
As above
The heat exchanger entering or leaving
water sensor is below the frost trip point
More than 6 successive circuit capacity
unloads because of low suction temperature
override.
As above
More than 6 successive circuit capacity
unloads because of high pressure override.
As above
More than 8 successive circuit capacity
unloads because of high discharge
temperature
As above
More than 8 successive circuit capacity
unloads because of low suction temperature
As above
Heat exchanger temperature is too low (less
than 10°C), preventing unit start-up
Safety interlock not closed before end of the
start-up delay or opens during operation
Evap. water pump run contact opens while
the pump has received a command to be on
As above
CCN command received to shutdown the
unit
The unit is controlled by a System Manager
and communication with this module is lost
for more than 2 minutes
The master/slave link is broken due to a
loss of communication between the two
units for more than 2 minutes
All factory parameters are zero
Wrong factory configuration
Wrong master/slave configuration
A maintenance alert is active
ACTION TAKEN BY
THE CONTROL
Circuit shut down
As above
Circuit shut down
As above
As above
As above
Unit shut down
Circuit shut down
As above
None
As above
As above
As above
As above
As above
Unit shut down
Unit prevented to start
or shut down
Unit shut down
Unit shut down
Unit shut down
Unit returns to
autonomous operating
mode
As above
Unit prevented to start
As above
Master/slave control
disabled
None
RESET TYPE
Automatic when pressure returns to
normal and if the same fault has not
occurred the same day (machine
equipped with CCN/clock board, If not,
manual)
As above
Manual, the high pressure switch must
be reset manually with the push-button
located on or in the pressure switch
As above
As above
As above
Automatic if the same alarm has not
tripped the same day (machine equipped
with CCN/clock board, If not, manual)
Manual
As above
Automatic
As above
As above
As above
As above
As above
As above
Manual
Manual
Manual
Manual
Automatic when communication is re-
established
As above
Automatic
Automatic
Automatic
Manual
PROBABLE CAUSE
Shortage of refrigerant, filter blocked or
faulty pressure sensor
As above
Fan circuit fault, high condenser
entering air temperature
As above
Incorrect compressor wiring
As above
Low water flow or defective thermistor
Faulty pressure sensor, clogged filter or
low refrigerant charge
As above
Faulty transducer, high condenser
entering air temperature, high entering
water temperature, condenser fouled
fan flow rate too low.
As above
Pressure sensor faulty or heat
exchanger fouled
As above
Pressure sensor faulty, filter obstructed,
shortage of refrigerant, heat exchanger
fouled or fan faulty.
As above
As above
Evaporator pump control or water flow
switch failure
Pump overheat, incorrect pump
connection
As above
Network command
Defective CCN bus wiring or system
module failure
As above
No factory configuration
Factory configuration error
Master or slave configuration error
ALARM CODE DESCRIPTIONS (continued)