Carrier Pro-Dialog CONTROL 4 Bedienungsanleitung Seite 7
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Code
1
2
3
4
5
11
12
13
14
15
16
21
22
23
24
25
26
31
32
33
34
35
36
41
42
Alarm name
Compressor A1 failure
Compressor A2 failure
Compressor B1 failure
Compressor B2 failure
Outdoor temperature
sensor failure
Discharge pressure trans-
ducer failure, Circuit A
Discharge pressure trans-
ducer failure, Circuit B
Suction pressure sensor
failure, Circuit A
Suction pressure sensor
failure, Circuit B
CCN/clock board failure
Loss of communication
with slave board
Low pressure failure,
circuit A
Low pressure failure,
circuit B
High pressure failure,
circuit A
High pressure failure,
circuit B
High pressure switch not
reset or compressor
reverse rotation, circuit A
High pressure switch not
reset or compressor
reverse rotation, circuit B
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
Indoor fan status
incorrect
Safety loop open
Emergency shut-down
Illegal factory configura-
tion
Alarm description
Motor safety input has opened due
to compressor overtemperature
protection.
As above
As above
As above
Thermistor outside range
Voltage delivered by the sensor is
incorrect
As above
Value read by the sensor is
incorrect
As above
The clock board is no longer
detected
Communication has been lost with
the slave board (circuit B control)
Circuit running and the suction
pressure below threshold
As above
Circuit running and the discharge
pressure exceeds the high pressure
trip point
As above
The high pressure switch has not
been reset following a high pressure
trip or one circuit compressor runs
in reverse rotation
As above
More than 6 successive circuit
capacity unloads because of low
suction temperature.
As above
More than 6 successive circuit
capacity unloads because of high
pressure override.
As above
The thermostat sends a cooling
stage demand, when the indoor fan
is stopped
Safety interlock open during
operation
CCN command received for
emergency shutdown of the unit
Wrong factory configuration
Action taken
Compressor is shut
down
As above
As above
As above
Unit shut down
Circuit A shut down
Circuit B shut down
Circuit A shut down
Circuit B shut down
Unit shut down
Circuit B shut down
Circuit A shut down
Circuit B shut down
Circuit shut down
As above
Circuit shut down
As above
Circuit shut down
As above
None
As above
Unit is prevented
from starting
Unit shut down
Unit shut down
Unit is prevented
from starting
Reset type
Manual
As above
As above
As above
Automatic, if temp. measured by
sensor returns to permitted range
of values
Automatic if the voltage delivered
by the sensor returns to normal
Automatic
Automatic
Automatic
Automatic if board is detected
again
Automatic if communication is re-
established
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
Manual
As above
Manual
As above
Automatic
As above
Manual
Manual
CCN
Automatic
Probable cause
Compressor overheat
As above
As above
As above
Faulty thermistor
Faulty sensor or wiring error
As above
As above
As above
Defective CCN/clock board
Bus wiring fault, wrong software in
slave board or faulty slave board
Shortage of refrigerant, filter
blocked or faulty pressure sensor
As above
Fan circuit fault, high condenser
entering air temperature
As above
The high pressure switch has
not been reset, poor electrical
compressor connection
As above
Faulty pressure sensor, clogged
filter or low refrigerant charge
As above
Faulty transducer, high conden-
ser air temperature, condenser
fouled or fan flow rate too low.
As above
Thermostat faulty, fan faulty
CCN Network command
No factory configuration or
factory configuration error
ALARM CODE DESCRIPTIONS
6.4 - Alarm codes
The following list gives a complete description of each alarm code and its possible cause.
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