Carrier Air Conditioner By Control Method Cause Code Alert GENERATED?, Ewt, Fsm, Lcw, Lwt, Mop

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Table 29 — Alarm and Alert Codes (cont)

ALARM/

ALARM

 

WHY WAS THIS

ACTION TAKEN

RESET

PROBABLE

ALERT

OR

DESCRIPTION

ALARM

BY CONTROL

METHOD

CAUSE

CODE

ALERT

 

GENERATED?

 

 

 

 

 

 

 

 

 

 

 

T112

Alert

Circuit A High Suction

If EXV is greater than

Circuit A shutdown after

Manual

Faulty expansion

 

 

Superheat

98%, suction superheat is

pumpdown complete.

 

valve or EXV board,

 

 

 

greater than 75 F (41.7 C)

 

 

low refrigerant

 

 

 

and saturated suction

 

 

charge, plugged fil-

 

 

 

temperature is less than

 

 

ter drier, faulty suc-

 

 

 

MOP for 5 minutes

 

 

tion gas thermistor

 

 

 

 

 

 

(T7) or cooler ther-

 

 

 

 

 

 

mistor (T5).

T113

Alert

Circuit B High Suction

If EXV is greater than

Circuit B shutdown after

Manual

Faulty expansion

 

 

Superheat

98% suction superheat is

pumpdown complete.

 

valve or EXV board,

 

 

 

greater than 75 F (41.7 C)

 

 

low refrigerant

 

 

 

and saturated suction

 

 

charge, plugged fil-

 

 

 

temperature is less than

 

 

ter drier, faulty suc-

 

 

 

MOP for 5 minutes

 

 

tion gas thermistor

 

 

 

 

 

 

(T8) or cooler ther-

 

 

 

 

 

 

mistor (T6).

T114

Alert

Circuit A Low Suction

If EXV is greater than

Circuit A shutdown after

Automatic restart

Faulty expansion

 

 

Superheat

10%, and either suction

pumpdown complete.

after first daily

valve or EXV board,

 

 

 

superheat is less than

 

occurrence.

faulty suction gas

 

 

 

superheat set point –10 F

 

Manual restart

thermistor (T7) or

 

 

 

(5.6 C) or saturated

 

thereafter.

cooler thermistor

 

 

 

suction temperature is

 

 

(T5).

 

 

 

greater than MOP for

 

 

 

 

 

 

5 minutes

 

 

 

T115

Alert

Circuit B Low Suction

If EXV is greater than

Circuit B shutdown after

Automatic restart

Faulty expansion

 

 

Superheat

10%, and either suction

pumpdown complete.

after first daily

valve or EXV board,

 

 

 

superheat is less than

 

occurrence.

faulty suction gas

 

 

 

superheat set point –10 F

 

Manual restart

thermistor (T8) or

 

 

 

(5.6 C) or saturated

 

thereafter.

cooler thermistor

 

 

 

suction temperature is

 

 

(T6).

 

 

 

greater than MOP for

 

 

 

 

 

 

5 minutes

 

 

 

T116

Alert

Circuit A Low Cooler

1. If the saturated suction

1. Mode 7 initiated. No addi-

1. Automatic reset

Faulty expansion

 

 

Suction Temperature

temperature is 24 to

tional capacity increases.

if corrected.

valve or EXV board,

 

 

 

29° F (13.3 to 16.1° C)

Alert not tripped.

 

low refrigerant

 

 

 

below cooler LWT and

 

 

charge, plugged fil-

 

 

 

is also 2° F (1.1° C)

 

 

ter drier, faulty suc-

 

 

 

less than freeze*

 

 

tion gas thermistor

 

 

 

2. If the saturated suction

2. Circuit shutdown without

2. Manual

(T7) or cooler ther-

 

 

 

temperature is 30° F

going through pumpdown.

 

mistor (T5), low

 

 

 

(16.7° C) below cooler

 

 

cooler fluid flow.

 

 

 

LWT and is also 2° F

 

 

 

 

 

 

(1.1° C) less than

 

 

 

 

 

 

freeze* for 10 minutes

 

 

 

T117

Alert

Circuit B Low Cooler

1. If the saturated suction

1. Mode 8 initiated. No addi-

1. Automatic reset

Faulty expansion

 

 

Suction Temperature

temperature is 24 to

tional capacity increases.

if corrected.

valve or EXV board,

 

 

 

29°F (13.3 to 16.1° C)

Alert not tripped.

 

low refrigerant

 

 

 

below cooler LWT and

 

 

charge, plugged fil-

 

 

 

is also 2°F (1.1° C)

 

 

ter drier, faulty suc-

 

 

 

less than freeze*

 

 

tion gas thermistor

 

 

 

2. If the saturated suction

2. Circuit shutdown without

2. Manual

(T8) or cooler ther-

 

 

 

temperature is 30° F

going through pumpdown.

 

mistor (T6), low

 

 

 

(16.7° C) below cooler

 

 

cooler fluid flow.

 

 

 

LWT and is also 2° F

 

 

 

 

 

 

(1.1° C) less than

 

 

 

 

 

 

freeze* for 10 minutes

 

 

 

T118

Alert

Circuit A Low Oil

Oil pressure switch open

Circuit shutdown without

Manual

Oil pump failure, low

 

 

Pressure

after 1 minute of continu-

going through pumpdown.

 

oil level, switch fail-

 

 

 

ous operation

 

 

ure or compressor

 

 

 

 

 

 

circuit breaker

 

 

 

 

 

 

tripped.

T119

Alert

Circuit B Low Oil

Oil pressure switch open

Circuit shutdown without

Manual

Oil pump failure, low

 

 

Pressure

after 1 minute of continu-

going through pumpdown.

 

oil level, switch fail-

 

 

 

ous operation

 

 

ure or compressor

 

 

 

 

 

 

circuit breaker

 

 

 

 

 

 

tripped.

 

 

 

 

 

 

 

 

LEGEND

CCN

— Carrier Comfort Network

CPCS — Compressor Protection Control System

CXB

— Compressor Expansion Board

EMM

— Energy Management Module

EWT

— Entering Fluid Temperature

EXV

— Electronic Expansion Valve

FSM

— Flotronic™ System Manager

LCW

— Leaving Chilled Water

LWT

— Leaving Fluid Temperature

MBB

— Main Base Board

MOP

— Maximum Operating Pressure

WSM

— Water System Manager

*Freeze is defined as 34° F (1.1 C) for water. For brine fluids, freeze is CSP.1 –8° F (4.4 C) for single set point and lower of CSP.1 or CSP.2 –8° F (4.4 C) for dual set point configuration.

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Contents Safety Considerations ContentsIntroduction ContentsGeneral Unit Sizes and Modular Combinations 30GUN,R Major System ComponentsUnit Sizes and Modular Combinations 30GTN,R Unit Nominal Section a Section B 30GTN,R Tons Unit 30GTN,RThermistor Designations Control Module CommunicationCarrier Comfort Network CCN Interface Status Switches Output RelayPage 24 V Control Schematic, Unit Sizes 24 V Control Schematic, Unit Sizes 080-110, 230B-315B CCN LEN Data Communication Port Main Base Board Operating Data 040-110 130-210Thermistor T3 and T4 Locations Compressor Thermistor Locations T7 and T8 Belden 8205 Regular Wiring Plenum Wiring Alpha 1895 AmericanManufacturer Columbia D6451 Manhattan M13402 M64430 Quabik 6130Compressor Protection Control System Module Sizes Stepper Motor 12 VDC CEPL130351 30GUN,R Part Load Data Percent Displacement, Standard UnitsDisplacement Compressors Approx110, 290B 255A 60 Hz390B 60 Hz 330A/B360B 50 Hz 390B 50 HzB1† A1,B1 A1†,A2,B1 A1*,B1†,B2 Unloaded compressor Two unloaders, both unloaded 170, 270A 190, 290A, 360A/BA1*,B1*,B2 Required Hardware for Additional Unloaders 150-210Head Pressure Control PumpoutPower FAN Arrangement FAN Relay Normal ControlService Test See Both main power Scrolling Marquee DisplayModes GEN.O TestStrt Run Status Mode and Sub-Mode DirectorySUB-MODE Keypad Range Item Expansion Comment Entry View VersOuts Service Test Mode and Sub-Mode DirectorySUB-MODE Keypad Range Item Expansion Comment Entry Test Set Point Mode and Sub-Mode Directory Temperature Mode and Sub-Mode DirectoryPressure Mode and Sub-Mode Directory SUB-MODE Keypad Range Item Expansion Comment Entry GEN.I Inputs Mode and Sub-Mode DirectoryReading and Changing Chilled Fluid Set Point CrctSUB-MODE Keypad Range Item Expansion Comment Entry GEN.O Outputs Mode and Sub-Mode DirectoryConfiguration Mode and Sub-Mode Directory CCN OPT1OPT2 EMM240 RsetExample of Temperature Reset Return Fluid Configuration SUB-MODE Keypad Display Item Expansion Comment Entry RsetSUB-MODE Keypad Entry Display Item Expansion Comment Rset Example of Configuring Dual Chiller Control Master ChillerExample of Configuring Dual Chiller Control Slave Chiller SUB-MODE Keypad Display Item Expansion Comment Entry OPT2 Example of Compressor Lead/Lag ConfigurationTime Clock Mode and Sub-Mode Directory SUB-MODE Keypad Entry Item Expansion Comment Range TimeSetting an Occupied Time Schedule Operating Mode and Sub-Mode DirectoryMode no Item Expansion Description Operating ModesAlarms Mode and Sub-Mode Directory Example of Reading and Clearing AlarmsConfiguration Configuring Temperature ResetMode Keypad SUB-MODE Entry ExpansionRED LED Entry Expansion Configuration Configuring Demand Limit DLS2Troubleshooting To 20 mA Demand LimitingPage Alarm and Alert Codes T051FSM By Control Method Cause Code Alert GENERATED?EWT LCWT170 T153T155 T173T205 T203T204 T206Oil Charge ServiceElectronic Components Compressor OIL RequiredCooler Thermistor Locations Plugs Components for Part Number PluggingCondenser Coils Cooler Head Bolt Tightening Sequence Typical Tube SheetCondenser Fan Adjustment Hz Low Noise Fan Option Units Dimension FAN TypePrinted Circuit Board Connector Refrigerant Feed Components Each circuit hasThermistors Temperature Sensors Drop a 5K Thermistor Temperature F vs Resistance/VoltageDrop B 5K Thermistor Temperature C vs Resistance/Voltage Temp Voltage Resistance Drop 200,510 30GTN,R Units Pressure Switch Settings Psig kPaSwitch Cutout CUT-IN 30GUN,R UnitsPRE-START-UP System CheckMaximum Ambient Temperature 125 Temperature Limits for Standard UnitsTemperature START-UP and OperationNominal and Minimum Cooler Fluid Flow Rates Field WiringRefrigerant Circuit Hgbps ALMCWP Energy Management Module EMM Wiring Compressor Expansion Board CXB Accessory Wiring Description Status Default Units Point Unit Configuration SettingsOPTIONS1 Options Configuration Description Status Default PointAppendix a CCN Tables OPTIONS2 Options ConfigurationAlarmdef Alarm Definition Table Resetcon Temperature Reset and Demand Limit Brodefs Broadcast POC Definition TableCircadio Circuit a Discrete Parameters Aunit General Unit ParametersCircaan Circuit a Analog Parameters Description Status Units Point ForceableCircban Circuit B Analog Parameters Circbdio Circuit B Discrete ParametersOptions Unit Parameters Strthour Description Status Units PointDescription Status Units Point Defaults CurrmodsDescription Status Point CSM/FSM Equipment Table Type 621H, BlockLine Description Point Appendix B Fluid Drop Pressure Curves Cooler Fluid Pressure Drop Curves 30GUN,GUR040-110Cooler Pressure Drop KEY Appendix B Fluid Drop Pressure CurvesCooler Fluid Pressure Drop Curves 30GUN,GUR130-210 Appendix B Fluid Drop Pressure Curves Cooler Fluid Pressure Drop Curves 30GUN,GUR230B-315B Cooler Fluid Pressure Drop Curves 30GTN,GTR040-110 Cooler Fluid Pressure Drop Curves 30GTN,GTR130-210 Appendix B Fluid Drop Pressure Curves Module B 30GTN,GTR230,245 Module B 30GTN,GTR255,290,315 Service Training Call for Free CatalogEquipment Chiller Model no START-UP Checklist for Comfortlink Chiller SystemsRemove and use for job file Preliminary Information Preliminary Equipment Check Check box if complete System Fluid Volume in Loop Type System UnitStart-UpUnit Start-Up Ccnb Description Status Units Value CtrlCcna BaudSlct Heating Cooling Setpoint Select CND.P RMT.A All Units

Air Conditioner specifications

Carrier Air Conditioners have long been synonymous with reliability and innovation in climate control. Founded by Willis Carrier, the inventor of modern air conditioning, the brand has continuously set industry standards through state-of-the-art technologies and features designed to enhance indoor comfort.

One of the standout features of Carrier air conditioners is their energy efficiency. Many models are equipped with advanced inverter technology, allowing the compressor to adjust its speed based on the cooling demand. This results in decreased energy consumption, which not only reduces utility bills but also lessens the environmental impact. Recognizing the importance of sustainable practices, Carrier has integrated eco-friendly refrigerants into their systems, further promoting energy-efficient operations.

Carrier also emphasizes user comfort through its variable speed systems. These systems maintain consistent temperatures while minimizing temperature fluctuations, ensuring an even distribution of cool air throughout the home. Additionally, many Carrier models come with advanced air filtration systems, designed to capture allergens, dust, and other particulates, thereby improving indoor air quality.

The smart technology featured in Carrier air conditioners plays a key role in modern convenience. Many units are compatible with smart home systems, allowing users to control settings remotely via smartphones or voice-activated devices. With features like programmable thermostats, users can easily set cooling schedules to match their lifestyle, ensuring comfort while maximizing energy savings.

Durability and noise reduction are also central to the Carrier brand. Many models are designed with sound-dampening features, making them some of the quietest units on the market. This is particularly advantageous for residential use, where noise can disrupt daily activities and sleep.

In terms of design, Carrier air conditioners come in various styles and capacities to suit a wide range of spaces, from compact apartment units to large central systems for sprawling homes. Their extensive warranty and service offerings further reinforce Carrier’s commitment to customer satisfaction.

In conclusion, Carrier air conditioners represent a perfect blend of cutting-edge technology, energy efficiency, and user comfort. Their emphasis on sustainability and smart features positions them as a leading choice for homeowners seeking reliable and innovative climate control solutions. Whether for cooling a small room or an entire house, Carrier remains a trusted name in air conditioning.
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