Carrier Aquasnap Junior 30RA Serie Manual De Uso página 17

30RA/30RH "B" Puron
Diagnostics
The electronic control on the machine continuously monitors its
operation. In the event of a malfunction, it activates a relay whose
contact generates a coded alarm signal sending ON/OFF signals to
the remote control and switching on the alarm LED
Some alarm conditions are automatically reset, others require the
intervention of the operator to search for the fault, remove its cause
and switch the unit back on.
Manual resetting of alarm conditions
Manual resetting of alarm conditions is performed using the
remote ON/OFF button by simply switching OFF and then ON again
or opening and closing S1 switch (see electrical connections page 11).
WARNING: manual resetting causes the definitive loss of the alarm
code; therefore, before a manual reset, check the code according to
the instruction reported and remove its cause.
N.B. Temporary power supply failure to a unit in an alarm condition
does not reset the unit.
Alarm codification
The alarm code generated by a failure, is shown to the operator
one time only, and the unit remains in alarm status. To have the
alarm code shown again, press the ECO button on the remote
control.
The alarm codification is based on the binary two-digit code X1 and
The following list describes the possible cause for each alarm code:
Alarm Description
code
1 Compressor fault
2 Leaving water temperature
probe fault
3 Entering water temperature
probe fault
4 Defrost probe fault
5 Air temperature probe fault
6 High pressure transducer fault
11 Low pressure transducer fault
13 Low refrigerant pressure
in the circuit
14 High refrigerant pressure
in the circuit
15 High pressure safety switch /
reverse compressor rotation
16 Plate exchanger
anti-freeze protection
Repeated attainment of low
21 suction temperature in cooling
(more than six times)
22 Repeated attainment of high
pressure condition in cooling
(more than six times)
23 Repeated attainment of high
discharge temperature in heating
24 Repeated attainment of low
suction temperature in heating
25 Low entering water
temperature in heating
26 Outdoor interblock fault
31 CCN emergency shut-down
32 Loss of communication with the
Flotronic or Chiller System Manager in local mode
33 Maintenance service request
X2, as follows:
the first figure X1 flashes at 1 second intervals until it reaches the
number corresponding to the first digit, after a pause of 2 seconds,
. second figure X2 starts to flash, again with 1 second intervals until
the number corresponding to the second is reached (only for two-
digit codes).
Alarm code 31 with persistent alarm
condition
To have the alarm code shown again, press the ECO button on the
remote control.
By pressing the ON/OFF button, the unit is turned OFF and the
alarm code is shown again. To restart the unit, remove the alarm
cause and press the ON/OFF button again.
Control Alarm reset
action method
Compressor stopped Manual
Unit stopped Automatic
Unit stopped Automatic
Unit stopped Automatic
Unit stopped Automatic
Unit stopped Automatic
Unit stopped Automatic
Automatic/
Unit stopped
Manual
Unit stopped Manual
Unit stopped Manual
Automatic/
Unit stopped
Manual
Unit stopped Automatic
Unit stopped Automatic
Unit stopped Automatic
Unit stopped Automatic
Unit stopped Automatic
Unit stopped Manual
Unit stopped Automatic
The unit operates
Automatic
Unit stopped Manual
1 + 1 + 1=3 1
31
LED on for 1 second
LED off for 1 second
Probable cause
Compressor overheated
Sensor out of range, probe wire interruption
or sensor fault
Sensor out of range, probe wire interruption
or sensor fault
Sensor out of range, probe wire interruption
or sensor fault
Sensor out of range, probe wire interruption
or sensor fault
Transducer out of range, incorrect transducer voltage
transducer wire interrupted or transducer fault
Transducer out of range, incorrect transducer voltage
transducer wire interrupted or transducer fault
Lack of refrigerant in the circuit, blocked
refrigerant filter or low pressure transducer fault
Fan fault, coil obstructed, high outdoor
air temperature
The safety pressure switch has not been reset after
the last alarm, incorrect compressor connection
Low water flow rate entering or leaving
water probe fault
Low pressure transducer fault,
refrigerant filter blocked
or lack of refrigerant in the circuit
High pressure transducer fault
high air temperature,
high entering water temperature
Low water flow rate entering or leaving
water probe fault
Low pressure transducer fault, refrigerant filter
blocked or lack of refrigerant in the circuit
Entering water temperature too low,
entering or leaving water probe fault
Flowswitch tripped or fault, air in the water circuit
Network control
CCN bus wiring defect or
fault in the system
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E N G L I S H
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