Carrier 040-420 specifications Alarm Codes, Action Taken Probable Cause N T R O L

Page 49

Alarm Codes - Following is a detailed description of each alarm code error and possible cause. Manual reset of an alarm is accomplished by moving LOCAWENABLE- STOP-CCN Switch to STOP position, then back to LO- CAL or CCN position. See Table 14 for listing of each alarm code.

Code 0 No alarms exist Codes 1 - 8 Compressor failure

If DSIO-LV or -EXV relay module control relay feed- back switch or signal is sensed as open during operation of a compressor, microprocessor detects this and stops com-

pressor, energizes alarm light, and displays a code of I, 2, 3, 4, 5, 6, 7, or 8 depending on the compressor. Compres- sor locks off; to reset, use manual reset method.

If lead compressor in a circuit shuts down, the other com- pressors in the circuit stop and lock off. Only the alarm mode for lead compressor is displayed.

The microprocessor is also programmed to indicate com- pressor failure if feedback terminal on DSIO-LV or -EXV 53 terminal strip receives voltage when compressor is not supposed to be on.

Table 14 - Alarm Codes

 

 

DISPLAY

 

 

 

 

 

D E S C R I P T I O N

 

ACTION TAKEN

 

C K T

 

 

 

 

PROBABLE CAUSE

 

 

 

 

 

 

 

 

 

 

B Y

C O N T R O L

 

PUMPDOWN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

 

 

 

 

 

-

 

 

0

 

 

 

No Alarms

Exist

 

 

 

 

 

 

 

 

-

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

Compressor Al failure

 

 

 

Circuit

A

shut

down

 

No

Manual

 

High-pressure switch trip, discharge gas

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

thermostat trip, or wiring error

 

2, 3,

4

 

 

Compressor A2, A3, A4 failure

 

Compressor

shut

down

 

Yes

Manual

 

CPCS

Ground

Fault

Protection

 

5

 

 

 

Compressor Bl failure

 

 

 

Circuit

B

shut

down

 

No

Manual

 

 

 

 

 

 

 

 

6, 7,

8

 

 

Compressor B2; 83, 84 failure

 

Compressor

shut

down

 

Yes

Manual

 

 

 

 

 

 

 

 

9

 

 

 

Leaving

water

thermistor

failure

 

Unit

shut

down

 

 

Yes

Auto

I

 

 

 

 

 

 

 

1 0

 

 

 

Entering

water

thermistor failure

 

Unit

shut

down

 

 

Yes

Auto

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermistor

 

or

transducer failure

 

1 9

 

 

 

Compressor Al sensor failure

 

Circuit

A

shut

down

 

Yes

Auto

 

 

 

 

 

 

 

 

 

or wiring error.

 

 

 

2 0

 

 

 

Compressor

Bl

sensor

failure

 

Circuit

B

shut

down

 

Yes

Auto

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 1

 

 

 

Reset

thermistor

failure

 

 

 

Normal

set

point

used

 

N o

Auto

 

 

 

 

 

 

 

 

2 2

 

 

 

Discharge pressure transducer failure, circuit A

Circuit

A

shut

down

 

Yes

Auto.

 

 

 

 

 

 

 

 

2 3

 

 

 

Discharge pressure transducer failure, circuit B

Circuit

B

shut

down

 

Yes

Auto

 

 

 

 

 

 

 

 

2 4

 

 

 

Suction pressure transducer failure, circuit A

Circuit

A

shut

down

 

N o

Auto

 

Transducer failure or wiring error

 

2 5

 

 

 

Suction pressure transducer failure, circuit B

Circuit

B

shut

down

 

N o

Auto.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 6

 

 

 

Oil pressure transducer failure, circuit A

Circuit

A

shut

down

 

N o

Auto.

 

 

 

 

 

 

 

 

2 7

 

 

 

Oil pressure transducer failure, circuit

B

Circuit

B

shut

down

 

N O

Auto

 

 

 

 

 

 

 

 

2 8

 

 

 

Transducer

supply

voltage

low

 

Unit

shut

down

 

 

N o

Auto

 

Unit voltage low or PSI faulty

 

2 9

 

 

 

Interlock

switch

 

oaen

 

 

 

Unit

shut

down

 

 

 

N o

Manual

 

Chilled

water

pump

inoperative

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 0

 

 

4-20

mA

reset

input

failure

 

 

Normal

set

point

used

 

N o

Auto

 

 

 

 

 

 

 

 

31

 

 

4-20

mA

demand limit failure

 

Demand

limit

ignored

 

N o

Auto

 

 

 

 

 

 

 

 

3 2

 

 

 

Loss of communication with DSIO-LV

Unit

shut

down

 

 

 

N o

Auto.

I

Wiring error or

faulty

module

 

3 3

 

 

 

Loss of communication with DSIO-EXV

Unit

shut

down

 

 

N o

Auto

or improper address

code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 4

 

 

 

Loss

of

communication with

4 In/4

Out module

Unit

shut

down

 

 

Yes

Auto

 

 

 

 

 

 

 

 

3 5

 

 

 

Not

used

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

-

 

 

 

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

I

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*

 

 

 

 

 

 

 

 

3 6

 

 

 

Low refrigerant pressure circuit A

 

 

 

 

 

 

 

 

 

No

 

Low refrigerant charge, plugged filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*

 

drier,

faulty

EXV

 

 

3 7

 

 

 

Low refrigerant pressure circuit B

 

 

 

 

 

 

 

 

 

No

 

Low refri erant charge, plugged filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

drier. fau I” tv EXV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

~,

 

3

 

 

 

 

3 8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

Manual

 

Faulty EXV, transducer, or thermistor

 

 

3 9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

Manual

 

Faultv EXV, transducer, or thermistor.

 

4 0

 

 

 

oil

pressure

 

circuit

A

 

 

Circuit

A

shut

down

 

N o

Manual

 

Low oil level, circuit breaker trip,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

faulty

EXV,

crankcase

heater,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or Pressure Transducer

 

4 1

 

 

 

oil

pressure

 

circuit

B

 

 

Circuit

B

shut

down

 

No

Manual

 

Low oil level, circuit breaker trip,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

fautty

EXV,

crankcase

heater,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or oressure

 

transducer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 2

 

 

 

Cooler

freeze

protection

 

 

 

Unit

shut

 

down

 

 

No

 

 

Low water flow or faulty thermistor

 

4 3

 

 

 

Low cooler water flow

 

 

 

Unit

shut

 

down

 

 

No

Manual

 

Chilled

water

pump failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or faulty

thermistor

 

 

4 4

 

 

 

Low suction temperature circuit A

 

Circuit

A

shut

down

 

No

Manual

 

Faulty

EXV

or

thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

after

10

minutes

 

 

 

 

 

 

 

 

 

 

 

 

4 5

 

 

 

Low suction temperature circuit B

 

Circuit

B

shut

down

 

N o

Manual

 

Faulty

EXV

or

thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

afler 10 minutes

 

 

 

 

 

 

 

 

 

 

 

 

4 6

 

 

 

High suction superheat circuit A

 

Circuit

A

shut

down

 

Yes

Manual

 

Low charge, faulty EXV or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I thermistor, or plugged filter drier

 

4 7

 

 

 

High suction superheat circuit B

 

Circuit

B

shut

down

 

Yes

Manual

 

Low charge, faulty EXV or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

thermistor, or plugged filter drier.

 

4 8

 

 

 

Low suction superheat circuit A

 

Circuit

A

shut

down

 

Yes

Manual

 

Faulty

EXV

or

thermistor

 

4 9

 

 

 

Low suction superheat circuit B

 

Circuit 6 shut down

 

Yes

Manual

 

Faultv

EXV

or

thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

 

 

 

Illegal

configuration

 

 

 

 

Unit

cannot

start

 

-

Manual

 

Configuration

error

 

 

5 1

 

 

 

Initial

configuration

required

 

Unit

cannot

start

 

-

Manual

 

Configuration

omitted

 

 

5 2

 

 

 

Emergency stop by CCN command

 

Unit

shut

 

down

 

 

Yes

C C N

 

Network

command.

 

 

 

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

*Reset

 

automatic first

time, manual if repeated same day

 

 

 

 

 

 

-Compressor Protection Control Module ES - Power Supply

49

Page 48 Page 50
Image 49
Page 48 Page 50
Contents Contrc Unit Model Unit Sizes and Modular CombinationsSource PSI Keypaddisplay Ground Fault InterrupterRELAY, B FieldCompressor Protection Control Module Cpcs LOCAL/ENABLE-STOP-CCN Switch Positions and OperationThermistor and Transducer Locations ThermistorsControl Steps CapacityLoading Sequence a Loading Sequence B Unit Control Steps060A\~**Hz Capacity Control Steps, 040-070 cantLoading Sequence a Loading Sequence B Unit Oy&ya Capacity Control Steps, 040-070 cantFBI 08Aqy,y AitiA4l&pi’ BP’ StepsLoading Loading Sequence B Unit Control Wtf2Z$’ Altt BittAltt Loading Sequence a Loading Equence B Unit’tt Amrox$-t&Z3 Loading Sequence a Quence B Unit Control Displacement Compressors UWrW Arwox A2.p $#l 110 50 HzAlt,Blv Loading Equence a Displacement Compressors MvroxEquence B 130, 24OA Awrox Drt,t130,24OA 130, 240ALoading Equence a Unit Attll’T3g A2.pLoading Sequence a Sequence B Unit $$V Control Size Steps LOAD11Loadin Sequence B Unit 8514w Displacement Compressors UVvW PWproxB2,B3 Al% Al’,BILoading Sequence B Unit Capacity Control Steps, 225, 250,280 30GT Displacement Compressors AwoxLoac \IG Sequence a Loading Sequence B Unit Loac Capacity Control Steps, 225, 250,280 cant30GT 250 Capacity Control Steps, 225, 250, 280 cant1G Sequence a Loading Sequence B Unit ControlFAN Arrangement FAN Numbers Contactor Controlled Condenser Fan SequenceFAN Arrangement FAN Numbers Condenser Fan Sequence cant~jACToR 30GT250 60 HzKeypad and Display Module Usage Keypad and Display Module Also Called HsioFunctions and Subfunctions Accessing Functions and SubfunctionsFunctions Operation Keypad Display Description Entry ResponseKeypad Directory Subfunction Keypadentry Display Comment Keypad Directory cant Status cantPressure AnalogSubfunction Keypad Entry Display Comment Outputs Subfunction Outputs DisplayOutputs HgbraSubfunction Keypad Entry Display Comment Override Keypad Directory cant Test cantClock Select QzqKeypad Directory Schedule cant Keypad Directory cant Service cord Keypad Directory cant Operationat and Mode Display Codes Example 1 Reading Alarm CodesExample 2 Reading Current Operating Modes Local on Cool Alarms Modes Local on M O D EKeypad Display Example 4 Reading and Changing Chilled Water Set Point Example 3 Using Test FunctionKeypad Display Comments Entry Response Keypad Display Comments Example 5 Using Return Water Temperature ResetCRST2 CrstiReset Reference Temperature Outdoor AIR 1OR Space Temp Example 6 Changing Reset TypeEKE FLD CFG Ertyp Lstyp Demand Keypad Display Entry ResponsePpiq Demand Limiting Example 8 Setting Time of Day Day of WeekMAX Demand Kimax = Adjustable Field Configurations Factory Configuration KeystrokesDisplay Example 9 Using the Schedule FunctionExample 10 Holiday Schedule Function Example 9 Using the Schedule Function cantComplete Unit Stoppage Complete unit stop Typical Stoppage Faults and Reset TypesAction Taken Probable Cause N T R O L Alarm CodesPage Page R ’ S ’ SlTnanz CGF SwitchCompressor Contactor Relay SNBFig. IOD 24-V Safety Circuit Wiring 225, 250, and 280 Units Electronil c Expansion Valve EXV Page Thermistor and Pressure Transducer Locations Suction Refrigerant Temperature Sensor T7, T8 040-210Associated Modular Units Pressure Transducer 2i.b Voltage Resistance Drop Voltage DropLine Transducer Each Compressor Equalizer OIL Pressure Suction Pressure Sight GlassPSIO, SIO Address Selector Control ModulesProcessor Module Psio Sensor Bus Wiring CommunicationsComm Troubleshooting 1NO. of Accessory Standard and Accessory UnloadersCircuit Circuit B Or2 30GN190-210 3OGT225,250,280 080-110 SO/SO Hz and 130 60 Hz Accessory Unloader Control WiringTLN HgbprLmyTEF4 Contactor Switch Circuit Breaker TransformerModule STAGE2J7-15 ModuleThermistor ElJ7-16Remote Dual Set Point Control InstallationPage Page Copyright 1994 Carrier Corporation

040-420 specifications

The Carrier 040-420 is a highly regarded commercial HVAC unit specifically designed for efficient heating and cooling in medium- to large-sized buildings. Known for its reliability and advanced technology, this system is ideal for a variety of applications ranging from offices to industrial spaces.

One of the main features of the Carrier 040-420 is its energy efficiency. The unit utilizes advanced compressors and a high-efficiency heat exchanger, which work together to minimize energy consumption while maximizing performance. This is crucial in today’s energy-conscious environment, as businesses strive to reduce operational costs and their carbon footprint. The unit also boasts a high SEER (Seasonal Energy Efficiency Ratio) rating, making it an attractive option for those looking to lower their utility bills.

Equipped with advanced inverter-driven technology, the Carrier 040-420 allows for precise control of indoor climate conditions. This means that the system can adjust its output according to the actual cooling or heating demand of the space, resulting in enhanced comfort and reduced energy waste. The inverter technology also contributes to quieter operation, allowing for a more pleasant indoor environment.

Another feature that sets the Carrier 040-420 apart is its smart controls. The unit can be integrated with Carrier’s Building Automation Systems, enabling remote monitoring and management. This allows facility managers to optimize energy use and immediately respond to any performance issues. Additionally, the unit is compatible with various control interfaces, making it easy for users to adjust settings or schedule operations according to the building's occupancy patterns.

The robust design of the Carrier 040-420 ensures longevity and durability, even in harsh environmental conditions. Its weatherproof casing protects the internal components, enhancing the unit's performance and reliability over time. Maintenance is simplified with accessible design features, allowing technicians to conduct service checks and repairs without extensive downtime.

Overall, the Carrier 040-420 stands out as a modern HVAC solution that combines energy efficiency, advanced technologies, and user-friendly features. Its commitment to performance and sustainability makes it an ideal choice for businesses looking to enhance comfort while being mindful of their energy consumption. With its blend of innovation and reliability, the Carrier 040-420 continues to be a preferred option in the commercial HVAC market.
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