Carrier PRO-DIALOG PLUS 50AZ - Page 29

29
ALARM
CODE
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
60
61
62
63
64
65
66
ALARM NAME
Low refrigerant pressure failure,
circuit A
Low refrigerant 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
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
Indoor fan status
Filter dirty or addtional heating
stage fault
Fire alarm
Thermostat failure
Heating coil frost protection
CCN emergency stop
Loss of communication with
master unit
Initial factory configuration
required - code 1
Illegal factory configuration
Maintenance alerts
High alarm - room temperature
Low alarm - room temperature
High alarm - outdoor
temperature
Low alarm - outdoor
temperature
High alarm - room humidity
Low alarm - room humidity
Room air quality alarm
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
Circuit compressor runs in reverse rotation
As above
More than 6 successive circuit capacity
unloads because of low suction tempe-
rature 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 tempe-
rature
As above
The fan has shut down even though it has
received a command to run.
The filter dirty detection contact is open or
the heating stage fault contact is open
The anti-fire contact is open.
The unit is controlled by an external ther-
mostat and this simultaneously sends a
heating or cooling command.
The heat exchanger water temperature is
under 1.1°C.
CCN command received to shutdown the
unit
The unit is controlled by a master unit (and
the communication with this unit has been
established) and the communication with
this module has been lost for 2 minutes.
All factory parameters are zero
Wrong factory configuration
A maintenance alert is active
The measured value is higher than the
alarm threshold.
The measured value is lower than the alarm
threshold.
The measured value is higher than the
alarm threshold.
The measured value is lower than the alarm
threshold.
The measured value is higher than the
alarm threshold.
The measured value is higher than the
alarm threshold.
The measured value is higher/lower than
the alarm threshold.
ACTION TAKEN BY
THE CONTROL
Circuit shut down
As above
Circuit shut down
As above
As above
As above
As above
As above
None
As above
As above
As above
As above
As above
The indoor fan has shut
down and all functions
have been deactivated.
The heating stages have
been switched off.
The indoor fan has shut
down. If the unit includes
a fire damper, this is
closed. If the unit inclu-
des an economiser, this
is kept fully open. All
functions are deacti-
vated.
The indoor fan shuts
down. All functions are
deactiated.
The indoor fan shuts
down, the heating valve
is closed (coil energised)
and all functions are
deactivated.
Unit shut down
The unit returns to an
autonomous operating
mode.
Unit prevented to start
As above
None
None
None
None
None
None
None
None
RESET TYPE
Automatic when pressure returns to
normal and if the same fault has not
occurred the same day
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
Manual
As above
Automatic
As above
As above
As above
As above
As above
Manual
As above
As above
As above
As above
As above
Automatic when the communication with
the master unit has been reestored.
Automatic
Automatic
Manual
Automatic when the measured value
returns to the admissible range.
Automatic when the measured value
returns to the admissible range.
Automatic when the measured value
returns to the admissible range.
Automatic when the measured value
returns to the admissible range.
Automatic when the measured value
returns to the admissible range.
Automatic when the measured value
returns to the admissible range.
Automatic when the measured value
returns to the admissible range.
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
Faulty pressure sensor, clogged filter or
low refrigerant charge
As above
Faulty transducer, high condenser
entering air temperature, too high,
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
Belt torn
Air flow too low
Low water flow
Network command
No factory configuration
Factory configuration error
ALARM CODE DESCRIPTIONS (continued)