Carrier Alarm Codes List: T051, T052, and Other Alarm Codes Explained
Page 49

Table 29 — Alarm and Alert Codes

ALARM/

ALARM

 

WHY WAS THIS

ACTION TAKEN

RESET

PROBABLE

ALERT

OR

DESCRIPTION

ALARM

BY CONTROL

METHOD

CAUSE

CODE

ALERT

 

GENERATED?

 

 

 

 

 

 

 

 

 

 

 

T051

Alert

Circuit A, Compressor 1

Compressor feedback signal

Circuit A shut down.

Manual

High-pressure or loss-of-

 

 

Failure

does not match relay state

 

 

charge switch open, faulty

 

 

 

 

 

 

control relay or CPCS board,

 

 

 

 

 

 

loss of condenser air, liquid

 

 

 

 

 

 

valve closed, operation

 

 

 

 

 

 

beyond capability.

T052

Alert

Circuit A, Compressor 2

Compressor feedback signal

Circuit A shut down. Circuit

Manual

High-pressure switch open,

 

 

Failure

does not match relay state

restarted in 1 minute. Com-

 

faulty control relay or CPCS

 

 

 

 

pressor A2 not used until

 

board, loss of condenser air,

 

 

 

 

alarm is reset.

 

liquid valve closed, opera-

 

 

 

 

 

 

tion beyond capability.

T053

Alert

Circuit A, Compressor 3

Compressor feedback signal

Circuit A shut down. Circuit

Manual

High-pressure switch open,

 

 

Failure

does not match relay state

restarted in 1 minute. Com-

 

faulty control relay or CPCS

 

 

 

 

pressor A3 not used until

 

board, loss of condenser air,

 

 

 

 

alarm is reset.

 

liquid valve closed, opera-

 

 

 

 

 

 

tion beyond capability.

T054

Alert

Circuit A, Compressor 4

Compressor feedback signal

Circuit A shut down. Circuit

Manual

High-pressure switch open,

 

 

Failure

does not match relay state

restarted in 1 minute. Com-

 

faulty control relay or CPCS

 

 

 

 

pressor A4 not used until

 

board, loss of condenser air,

 

 

 

 

alarm is reset.

 

liquid valve closed, opera-

 

 

 

 

 

 

tion beyond capability.

T055

Alert

Circuit B, Compressor 1

Compressor feedback signal

Circuit B shut down.

Manual

High-pressure or loss-of-

 

 

Failure

does not match relay state

 

 

charge switch open, faulty

 

 

 

 

 

 

control relay or CPCS board,

 

 

 

 

 

 

loss of condenser air, liquid

 

 

 

 

 

 

valve closed, operation

 

 

 

 

 

 

beyond capability.

T056

Alert

Circuit B, Compressor 2

Compressor feedback signal

Circuit B shut down. Circuit

Manual

High-pressure switch open,

 

 

Failure

does not match relay state

restarted in 1 minute. Com-

 

faulty control relay or CPCS

 

 

 

 

pressor B2 not used until

 

board, loss of condenser air,

 

 

 

 

alarm is reset.

 

liquid valve closed, opera-

 

 

 

 

 

 

tion beyond capability.

T057

Alert

Circuit B, Compressor 3

Compressor feedback signal

Circuit B shut down. Circuit

Manual

High-pressure switch open,

 

 

Failure

does not match relay state

restarted in 1 minute. Com-

 

faulty control relay or CPCS

 

 

 

 

pressor B3 not used until

 

board, loss of condenser air,

 

 

 

 

alarm is reset.

 

liquid valve closed, opera-

 

 

 

 

 

 

tion beyond capability.

A060

Alarm

Cooler Leaving Fluid

Thermistor outside range of

Chiller shutdown after

Automatic

Thermistor failure, damaged

 

 

Thermistor Failure (T1)

–40 to 245 F (–40 to 118 C)

pumpdown complete.

 

cable/wire or wiring error.

A061

Alarm

Cooler Entering Fluid

Thermistor outside range of

Chiller shutdown after

Automatic

Thermistor failure, damaged

 

 

Thermistor Failure (T2)

–40 to 245 F (–40 to 118 C)

pumpdown complete.

 

cable/wire or wiring error.

T064

Alert

Circuit A Saturated Con-

Thermistor outside range of

Circuit A shutdown after

Automatic

Thermistor failure, damaged

 

 

densing Thermistor Failure

–40 to 245 F (–40 to 118 C)

pumpdown complete.

 

cable/wire or wiring error.

 

 

(T3)

 

 

 

 

T065

Alert

Circuit B Saturated Con-

Thermistor outside range of

Circuit B shutdown after

Automatic

Thermistor failure, damaged

 

 

densing Thermistor Failure

–40 to 245 F (–40 to 118 C)

pumpdown complete.

 

cable/wire or wiring error.

 

 

(T4)

 

 

 

 

T066

Alert

Circuit A Saturated Suction

Thermistor outside range of

Circuit A shutdown after

Automatic

Thermistor failure, damaged

 

 

Thermistor Failure (T5)

–40 to 245 F (–40 to 118 C)

pumpdown complete.

 

cable/wire or wiring error.

 

 

 

 

(EXV only)

 

 

T067

Alert

Circuit B Saturated Suction

Thermistor outside range of

Circuit B shutdown after

Automatic

Thermistor failure, damaged

 

 

Thermistor Failure (T6)

–40 to 245 F (–40 to 118 C)

pumpdown complete.

 

cable/wire or wiring error.

 

 

 

 

(EXV only).

 

 

T068

Alert

Compressor A1 Suction

Thermistor outside range of

Circuit A shutdown after

Automatic

Thermistor failure, damaged

 

 

Gas Thermistor Failure (T7)

–40 to 245 F (–40 to 118 C)

pumpdown complete.

 

cable/wire or wiring error.

 

 

 

 

(EXV only).

 

 

T069

Alert

Compressor B1 Suction

Thermistor outside range of

Circuit B shutdown after

Automatic

Thermistor failure, damaged

 

 

Gas Thermistor Failure (T8)

–40 to 245 F (–40 to 118 C)

pumpdown complete.

 

cable/wire or wiring error.

 

 

 

 

(EXV only).

 

 

 

 

 

 

 

 

 

T073

Alert

Outside Air Thermistor

Thermistor outside range of

Temperature reset disabled.

Automatic

Thermistor failure, damaged

 

 

Failure (T9)

–40 to 245 F (–40 to 118 C)

Chiller runs under normal

 

cable/wire or wiring error.

 

 

 

 

control/set points.

 

 

T074

Alert

Space Temperature

Thermistor outside range of

Temperature reset disabled.

Automatic

Thermistor failure, damaged

 

 

Thermistor Failure (T10)

–40 to 245 F (–40 to 118 C)

Chiller runs under normal

 

cable/wire or wiring error.

 

 

 

 

control/set points.

 

 

 

 

 

 

 

 

 

T077

Alert

Circuit A Saturated

Saturated suction is

Circuit A shutdown after

Automatic

Faulty expansion valve or

 

 

Suction Temperature

greater than leaving fluid

pumpdown complete.

 

EXV board, faulty cooler suc-

 

 

exceeds Cooler Leaving

temperature for more than

 

 

tion thermistor (T5) or leav-

 

 

Fluid Temperature

5 minutes

 

 

ing fluid thermistor (T1).

T078

Alert

Circuit B Saturated

Saturated suction is

Circuit B shutdown after

Automatic

Faulty expansion valve or

 

 

Suction Temperature

greater than leaving fluid

pumpdown complete

 

EXV board, faulty cooler suc-

 

 

exceeds Cooler Leaving

temperature for more than

 

 

tion thermistor (T6) or leav-

 

 

Fluid Temperature

5 minutes

 

 

ing fluid thermistor (T1).

T079

Alert

Lead/Lag Thermistor Failure

Thermistor outside range of

Lead/lag algorithm runs

Automatic

Dual chiller LWT thermistor

 

 

 

–40 to 245 F (–40 to 118 C)

using Master LWT sensor

 

failure, damaged cable/wire

 

 

 

 

Master is lead chiller.

 

or wiring error.

49

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Image 49
Page 48 Page 50
Contents Contents Safety ConsiderationsGeneral ContentsIntroduction Unit Sizes and Modular Combinations 30GTN,R Major System ComponentsUnit Sizes and Modular Combinations 30GUN,R Unit Nominal Section a Section B 30GTN,R Tons Unit 30GTN,RCarrier Comfort Network CCN Interface Control Module CommunicationThermistor Designations Output Relay Status SwitchesPage 24 V Control Schematic, Unit Sizes 24 V Control Schematic, Unit Sizes 080-110, 230B-315B CCN LEN Data Communication Port Main Base Board 040-110 130-210 Operating DataThermistor T3 and T4 Locations Compressor Thermistor Locations T7 and T8 Manufacturer Regular Wiring Plenum Wiring Alpha 1895 AmericanBelden 8205 Columbia D6451 Manhattan M13402 M64430 Quabik 6130Compressor Protection Control System Module Sizes Stepper Motor 12 VDC CEPL130351 Displacement Compressors Part Load Data Percent Displacement, Standard Units30GUN,R Approx255A 60 Hz 110, 290B360B 50 Hz 330A/B390B 60 Hz 390B 50 HzB1† A1,B1 A1†,A2,B1 A1*,B1†,B2 Unloaded compressor Two unloaders, both unloaded 190, 290A, 360A/B 170, 270AA1*,B1*,B2 150-210 Required Hardware for Additional UnloadersPumpout Head Pressure ControlFAN Arrangement FAN Relay Normal Control PowerScrolling Marquee Display Service Test See Both main powerGEN.O Test ModesSUB-MODE Keypad Range Item Expansion Comment Entry View Run Status Mode and Sub-Mode DirectoryStrt VersSUB-MODE Keypad Range Item Expansion Comment Entry Test Service Test Mode and Sub-Mode DirectoryOuts Pressure Mode and Sub-Mode Directory Temperature Mode and Sub-Mode DirectorySet Point Mode and Sub-Mode Directory Reading and Changing Chilled Fluid Set Point Inputs Mode and Sub-Mode DirectorySUB-MODE Keypad Range Item Expansion Comment Entry GEN.I CrctConfiguration Mode and Sub-Mode Directory Outputs Mode and Sub-Mode DirectorySUB-MODE Keypad Range Item Expansion Comment Entry GEN.O OPT2 OPT1CCN EMMRset 240SUB-MODE Keypad Display Item Expansion Comment Entry Rset Example of Temperature Reset Return Fluid ConfigurationExample of Configuring Dual Chiller Control Slave Chiller Example of Configuring Dual Chiller Control Master ChillerSUB-MODE Keypad Entry Display Item Expansion Comment Rset Time Clock Mode and Sub-Mode Directory Example of Compressor Lead/Lag ConfigurationSUB-MODE Keypad Display Item Expansion Comment Entry OPT2 SUB-MODE Keypad Entry Item Expansion Comment Range TimeOperating Mode and Sub-Mode Directory Setting an Occupied Time ScheduleOperating Modes Mode no Item Expansion DescriptionExample of Reading and Clearing Alarms Alarms Mode and Sub-Mode DirectoryMode Keypad SUB-MODE Configuring Temperature ResetConfiguration Entry ExpansionRED LED Entry Expansion Configuration DLS2 Configuring Demand LimitTo 20 mA Demand Limiting TroubleshootingPage T051 Alarm and Alert CodesEWT By Control Method Cause Code Alert GENERATED?FSM LCWT155 T153T170 T173T204 T203T205 T206Electronic Components ServiceOil Charge Compressor OIL RequiredCooler Thermistor Locations Components for Part Number Plugging PlugsCooler Head Bolt Tightening Sequence Typical Tube Sheet Condenser CoilsDimension FAN Type Condenser Fan Adjustment Hz Low Noise Fan Option UnitsRefrigerant Feed Components Each circuit has Printed Circuit Board ConnectorThermistors Temperature Sensors Drop B 5K Thermistor Temperature F vs Resistance/VoltageDrop a 5K Thermistor Temperature C vs Resistance/Voltage Temp Voltage Resistance Drop 200,510 Switch Cutout CUT-IN Pressure Switch Settings Psig kPa30GTN,R Units 30GUN,R UnitsSystem Check PRE-START-UPTemperature Temperature Limits for Standard UnitsMaximum Ambient Temperature 125 START-UP and OperationRefrigerant Circuit Field WiringNominal and Minimum Cooler Fluid Flow Rates CWP ALMHgbps Energy Management Module EMM Wiring Compressor Expansion Board CXB Accessory Wiring OPTIONS1 Options Configuration Unit Configuration SettingsDescription Status Default Units Point Description Status Default PointAlarmdef Alarm Definition Table OPTIONS2 Options ConfigurationAppendix a CCN Tables Brodefs Broadcast POC Definition Table Resetcon Temperature Reset and Demand LimitCircaan Circuit a Analog Parameters Aunit General Unit ParametersCircadio Circuit a Discrete Parameters Description Status Units Point ForceableCircbdio Circuit B Discrete Parameters Circban Circuit B Analog ParametersOptions Unit Parameters Description Status Units Point StrthourCurrmods Description Status Units Point DefaultsLine Description Point CSM/FSM Equipment Table Type 621H, BlockDescription Status Point Cooler Fluid Pressure Drop Curves 30GUN,GUR040-110 Appendix B Fluid Drop Pressure CurvesCooler Fluid Pressure Drop Curves 30GUN,GUR130-210 Appendix B Fluid Drop Pressure CurvesCooler Pressure Drop KEY 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 Call for Free Catalog Service TrainingRemove and use for job file Preliminary Information START-UP Checklist for Comfortlink Chiller SystemsEquipment Chiller Model no Preliminary Equipment Check Check box if complete UnitStart-Up System Fluid Volume in Loop Type SystemUnit Start-Up Ccna Description Status Units Value CtrlCcnb 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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