Diagnostics - Carrier AQUASNAP JUNIOR 30RHX Installation Manual

30RHX

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. 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).
The following list describes the possible cause for each alarm code:
Alarm
Description
code
1 Compressor fault
Leaving water temperature
2
probe fault
Entering water temperature
3
probe fault
4 Defrost probe fault
5 Air temperature probe fault
6 High pressure transducer fault
11 Low pressure transducer fault
Low refrigerant pressure
13
in the circuit
High refrigerant pressure
14
in the circuit
Plate exchanger
16
anti-freeze protection
Repeated attainment of low
21 suction temperature in cooling
(more than six times)
Repeated attainment of high
22
pressure condition in cooling
(more than six times)
Repeated attainment of high
23
discharge temperature in heating
Repeated attainment of low
24
suction temperature in heating
Low entering water
25
temperature in heating
26 Outdoor interblock fault
31 CCN emergency shut-down
Loss of communication with the
32
Flotronic or Chiller System Manager in local mode
33 Maintenance service request
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.
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
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
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
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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