Carrier 30RB012-9 - Diagnostic; Alarm Codification and Reset; Alarm Code Troubleshooting List

13
30RB
The following list describes the possible cause for each alarm code:
Diagnostic
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
TJHOBMTFOEJOH0/0''TJHOBMTUPUIFSFNPUFDPOUSPMBOE
switching on the alarm LED.
Some alarm conditions are automatically reset, others
require the intervention of the operator to search for the
GBVMUSFNPWFJUTDBVTFBOETXJUDIUIFVOJUCBDLPO
.BOVBMSFTFUUJOHPGBMBSNDPOEJUJPOT
Manual resetting of alarm conditions is performed using the
SFNPUF0/0''CVUUPOCZTJNQMZTXJUDIJOH0''BOEUIFO
0/BHBJO
or opening and closing S1 switch (see electrical
connections page 10).
WARNING: NBOVBMSFTFUUJOHDBVTFTUIFEFöOJUJWFMPTTPG
UIFBMBSNDPEFUIFSFGPSFCFGPSFBNBOVBMSFTFUDIFDLUIF
code according to the instruction reported and remove its
cause.
/#5FNQPSBSZQPXFSTVQQMZGBJMVSFUPBVOJUJOBOBMBSN
condition does not reset the unit.
"MBSNDPEJöDBUJPO
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
"MBSNDPEFXJUIQFSTJTUFOUBMBSNDPOEJUJPO
LED on for 1 second
LED o for 1 second
To have the alarm code shown again, press the ECO button
on the remote control.
#ZQSFTTJOHUIF0/0''CVUUPOUIFVOJUJTUVSOFEOFF and
the alarm code is shown again. To restart the unit, remove
UIFBMBSNDBVTFBOEQSFTTUIF0/0''CVUUPOBHBJO
1 + 1 + 1=3 1
31
on the remote control.
5IFBMBSNDPEJöDBUJPOJTCBTFEPOUIFCJOBSZUXPEJHJUDPEF
X1 and X2, as follows:
UIFöSTUöHVSF9øBTIFTBUTFDPOEJOUFSWBMTVOUJMJU
SFBDIFTUIFOVNCFSDPSSFTQPOEJOHUPUIFöSTUEJHJUBGUFSB
QBVTFPGTFDPOETTFDPOEöHVSF9TUBSUTUPøBTIBHBJO
with 1 second intervals until the number corresponding to
the second is reached (only for two-digit codes).
"MBSN Description
Control
action
"MBSN
reset
NFUIPE
1SPCBCMFDBVTF
1 Compressor fault
Compressor
stopped
Manual Compressor overheated
2
Leaving water temperature
probe fault
Unit
stopped
Automatic
Sensor out of range, probe wire interruption or
sensor fault
3
Entering water temperature
probe fault
Unit
stopped
Automatic
Sensor out of range, probe wire interruption or
sensor fault
5 Air temperature probe fault
Unit
stopped
Automatic
Sensor out of range, probe wire interruption or
sensor fault
6 High pressure transducer fault
Unit
stopped
Automatic
Transducer out of range, incorrect transducer
voltage transducer wire interrupted or transducer
fault
11 Low pressure transducer fault
Unit
stopped
Automatic
Transducer out of range, incorrect transducer
voltage transducer wire interrupted or transducer
fault
13
Low refrigerant pressure in the
circuit
Unit
stopped
Automatic/
Manual
-BDLPGSFGSJHFSBOUJOUIFDJSDVJUCMPDLFE
SFGSJHFSBOUöMUFSPSMPXQSFTTVSFUSBOTEVDFSGBVMU
14
High refrigerant pressure in the
circuit
Unit
stopped
Manual
Fan fault, coil obstructed, high outdoor air
temperature
15
High pressure safety switch /
reverse compressor rotation
Unit
stopped
Manual
The safety pressure switch has not been reset after
the last alarm, incorrect compressor connection
16
1MBUFFYDIBOHFSBOUJGSFF[F
protection
Unit
stopped
Automatic/
Manual
Low water ow rate entering or leaving water
probe fault
21
Repeated attainment of low
suction temperature in cooling
(more than six times)
Unit
stopped
Automatic
-PXQSFTTVSFUSBOTEVDFSGBVMUPSMBDLPGSFGSJHFSBOU
in the circuit
22
Repeated attainment of high
pressure condition in cooling
(more than six times)
Unit
stopped
Automatic
High pressure transducer fault high air
temperature, high entering water temperature
26 0VUEPPSJOUFSCMPDLGBVMU
Unit
stopped
Manual Flowswitch tripped or fault, air in the water circuit
33 Maintenance service request
Unit
stopped
Manual -
English