Carrier 30GK manual Alarm codes, Alarm Code Descriptions

Page 33

6.4 - Alarm codes

The following list gives a complete description of each alarm code and its possible cause.

ALARM CODE DESCRIPTIONS

Code

Alarm name

Description

Action

Pumpdown

Reset type

Probable cause

1

Evaporator leaving water thermistor fault

Thermistor outside range

Unit shut down

Yes

Auto

Thermistor or wiring fault or

 

 

 

 

 

 

bad connection

2

Evaporator entering water thermistor fault

Ditto

Unit shut down

Yes

Auto

Ditto

3

Condenser leaving water thermistor fault

Ditto

Heating mode: Unit shut down,

Yes

Auto

Ditto

 

 

 

if control on leaving water.

 

 

 

 

 

 

Cooling mode: no action

 

 

 

4

Condenser entering water thermistor fault

Ditto

Heating mode: Unit shut down,

-

Auto

Ditto

 

 

 

if control on entering water.

 

 

 

 

 

 

Cooling mode: no action

 

 

 

5

Heat reclaim entering water thermistor fault

Ditto

Unit with heat recalaim option:

-

Auto

Ditto

 

 

 

heat reclaim mode shut down,

 

 

 

 

 

 

unit changes over to standard

 

 

 

 

 

 

cooling mode. If not: no action

 

 

 

6

Heat reclaim leaving water thermistor fault

Ditto

None

-

Auto

Ditto

 

 

 

 

 

 

 

7

Outdoor temperature sensor fault

Ditto

Reset: normal setpoint used.

-

Auto, if temp. mea-

Thermistor faulty

 

 

 

Limitation or reset deactivated.

 

sured by sensor

 

 

 

 

 

 

returns to normal

 

8

CHWS (master/slave) fluid thermistor fault

Ditto

Deactivated

-

Ditto

Themistor faulty

9

Suction thermistor fault, compressor A1

Ditto

Circuit A shut down

Yes

Auto

Ditto

10

Suction thermistor fault, compressor B1

Ditto

Circuit B shut down

Yes

Auto

Ditto

11

External 0-10 V dc signal fault

Reset signal outside range

Reset: normal setpoint used

No

Auto

Signal incorrect, wiring error

 

 

 

Limitation or reset deactivated

 

 

 

12

Discharge pressure sensor fault, circuit A

Voltage transmitted by incorrect sensor

Circuit A shut down

Yes

Auto

Sensor fault or wiring error

13

Discharge pressure sensor fault, circuit B

Ditto

Circuit B shut down

Yes

Auto

Ditto

14

Suction pressure sensor fault, circuit A

Ditto

Circuit A shut down

No

Auto

Ditto

15

Suction pressure sensor fault, circuit B

Ditto

Circuit B shut down

No

Auto

Ditto

16

Oil pressure sensor fault, compressor A1

Ditto

Circuit A shut down

No

Auto

Ditto

17

Oil pressure sensor fault, compressor B1

Ditto

Circuit B shut down

No

Auto

Ditto

18

Oil pressure sensor fault, compressor A2

Ditto

Compressor A2 shut down

-

Auto

Ditto

19

Oil pressure sensor fault, compressor B2

Ditto

Compressor B2 shut down

-

Auto

Ditto

20

Oil pressure sensor fault, compressor A3

Ditto

Compressor A3 shut down

-

Auto

Ditto

21

Oil pressure sensor fault, compressor B3

Ditto

Compressor B3 shut down

-

Auto

Ditto

22

Oil pressure sensor fault, compressor A4

Ditto

Compressor A4 shut down

-

Auto

Ditto

23

Oil pressure sensor fault, compressor B4

Ditto

Compressor B4 shut down

-

Auto

Ditto

24

Pumpdown pressure sensor fault, circuit A

Ditto

If circuit is in heat reclaim

-

Auto, if press. mea-

 

 

 

 

mode, it goes to cooling mode.

 

sured by sensor

 

 

 

 

If not, no action

 

returns to normal

 

25

Pumpdown pressure sensor fault, circuit B

Ditto

Ditto

-

Ditto

Ditto

26

Loss of communication with compressor board A1

Communication with the compressor

Circuit A shut down

No

Auto

Wiring fault, faulty module,

 

 

board is lost

 

 

 

incorrect module address

27

Loss of communication with compressor board A2

Ditto

Compressor A2 shut down

No

Auto

Ditto

28

Loss of communication with compressor board A3

Ditto

Compressor A3 shut down

No

Auto

Ditto

29

Loss of communication with compressor board A4

Ditto

Compressor A4 shut down

No

Auto

Ditto

30

Loss of communication with compressor board B1

Ditto

Circuit B shut down

No

Auto

Ditto

31

Loss of communication with compressor board B2

Ditto

Compressor B2 shut down

No

Auto

Ditto

32

Loss of communication with compressor board B3

Ditto

Compressor B3 shut down

-

Auto

Ditto

33

Loss of communication with compressor board B4

Ditto

Compressor B4 shut down

-

Auto

Ditto

34

Loss of communication with EXV board

Ditto

Unit shut down

No

Auto

Wiring bus faulty, incorrect

 

 

 

 

 

 

address or board faulty

35

Loss of communication with NRCP board

The board does not respond

Unit shut down, if heat reclaim mode

No

Auto, if board is

NRCP board faulty

 

 

 

is selected

 

again detected

 

36

Loss of communication with fan board 1

Ditto

Unit shut down, if the number of

No

Auto

Wiring bus faulty, incorrect

 

 

 

fan stages per circuit is less than 3.

 

 

address or board faulty

 

 

 

If not, circuit A shut down

 

 

 

37

Loss of communication with fan board 2

Ditto

Circuit B shut down

No

Auto

Ditto

38

Loss of communication with 4xAI - 2xAO board 1

Ditto

Unit shut down or no action

No

Auto

Ditto, depending on

 

 

 

 

 

 

configuration

39

Loss of communication with 4xAI - 2xAO board 2

Ditto

Compressors or circuit shut down

No

Auto

Ditto, depending on

 

 

 

 

 

 

configuration

40

Pumpdown fault, circuit A

End of pumpdown conditions not

Circuit A shut down

No

Manual

EXV or sensor faulty

 

 

satisfied

 

 

 

 

41

Pumpdown fault, circuit B

Ditto

Circuit B shut down

No

Manual

Ditto

42

Evaporator frost protection

Unit operating: units shut down if

Unit shut down

No

Auto first time,

Low water flow or

 

 

temp. < defrost threshold.

 

 

then manual

thermistor defective

 

 

Unit shut down: if temp < threshold

 

 

 

 

 

 

and evaporator heater on for more

 

 

 

 

 

 

than 10 mins.

 

 

 

 

43

Low evaporator water flow rate.

 

Unit shut down

No

Manual

Water pump faulty

44

Low suction temperature, circuit A

Circuit operating: saturated suction

Circuit A shut down

No

Manual

Low charge, filter dirty

 

 

temp. < defrost threshold and < leaving

 

 

 

ot thermistor faulty

 

 

water -16°C for more than 10 mins.

 

 

 

 

45

Low suction temperature, circuit B

Ditto

Circuit B shut down

No

Manual

Ditto

46

High suction overheat, circuit A

EXV fully open

Circuit A shut down

Yes

Manual

Ditto

47

High suction overheat, circuit B

Ditto

Circuit B shut down

Yes

Manual

Ditto

48

Low suction overheat, circuit A

EXV in min. position, and circuit

Circuit A shut down

Yes

Manual

EXV or thermistor or

 

 

superheat below superheat setpoint

 

 

 

transducer defective

 

 

-5.5 K, saturated suction temp. above

 

 

 

 

 

 

MOP for 5 mins.

 

 

 

 

33

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Contents 30GK Series PRO-DIALOG Control Installation, operation and maintenance instructionsTable of Contents Safety Considerations Diagnostics Troubleshooting Safety Considerations GeneralAvoiding electrocution Abbreviations used General DescriptionGeneral Control board Hardware DescriptionElectronic boards Control boxRed LED Board addressesGreen LED Orange LED CCN/clock boardEvaporator leaving water temperature sensor Evaporator entering water temperature sensorCondenser entering and leaving water temperature sensors Heat reclaim condenser entering/leaving water temperaturesUser connections Description Connector Terminal ChannelAvailable Terminals RemarksLocal interface general features Setting UP PRO-DIALOG Plus ControlMain interface Main Interface Button Name DescriptionUnit start/stop control Stopping the unit in local modeDescription Starting unit and selecting an operating typeMenus Modifying the value of a parameter/access to a sub- menuSelecting a menu Selecting a menu itemStructure MenuStatus Menu treeInformation Menu Format Units Description Description of the Information menuTemperatures Menu Format Units Comments Description of the Temperatures menuDescription of the Pressures menu Pressures Menu Format Units CommentsSetpoints Menu Format Units Range Comments Description of the Setpoints menuDescription of the Outputs/Tests menu General Description of the Inputs menuMenu description Inputs Menu Format Units CommentsFormat Units Description Description of the Configuration menu General PasswordManual tests SUB-MENU Holiday Configuration SUB-MENU Period ConfigurationUser 1 Configuration SUB-MENU Format Units Default Comments Description of the User 1 Configuration sub-menuDescription of the User 2 Configuration sub-menu Description of Date and Time configuration sub MenuDate & Time Configuration SUB-MENU Format Comments Description of the Holidays sub-menus Typical timer programDescription of the Broadcast sub-menu Item # Format CommentsDescription of the Alarms History menu Description of the Alarms menuBroadcast Configuration SUB-MENU Item # Format Comments Alarms Menu Item # Format DescriptionMaintenance menu description Runtime menu description Description of the Runtimes 2 menuDescription of the Runtimes 1 menu PRO-DIALOG Plus Control Operation Chilss Contact Type Mode ShutdownStart/stop control Heating/cooling selectionCondenser water pump control Evaporator water pump control Control interlock contactEvaporator heater control Control pointDemand limit Demand limit by 0-10 V d.c. signalCapacity control Determining the lead circuitControlling the EXV Slave compressor start-up sequenceHead pressure control on air-cooled units Head pressure control on water-cooled unitsHigh pressure load shedding function Master/slave assemblyPumping down Controlling Pro-Dialog Plus units with a System ManagerDisplaying alarms Diagnostics TroubleshootingResetting alarms Optional heat reclaim moduleAlarm Code Descriptions Alarm codesCCN DGT only for units with low-temperature option Compressor faults 6.4.1.1 GeneralCompressor protection devices Starter Guard

30GK specifications

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Overall, the Carrier 30GK chiller represents a perfect balance of cutting-edge technology, energy efficiency, and sustainability. Its features make it a leading choice in the market, suited for those looking to invest in high-quality and dependable cooling solutions.
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