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General| Brand | Trane Technologies |
|---|---|
| Model Number | 4TWV8049A1000B |
| Category | Heat Pump |
| SEER Rating | 18 |
| HSPF Rating | 10 |
| Refrigerant Type | R-410A |
| Voltage | 208/230 V |
| Phase | 1 |
| Unit Weight | 280 lbs |
Lists specific models of variable speed heat pumps and air conditioners.
Warning about electrical hazards and lockout/tagout procedures.
Details on R-410A refrigerant, PVE oil, and system handling.
Caution regarding hot surfaces, specifically the compressor.
Warning about refrigerant under pressure and recovery procedures.
Importance of proper grounding devices and their reinstallation.
Warning about abrupt release of system charge from service valves.
Guidelines for brazing and leak testing mechanical connections.
Warning about high leakage current and earth connection.
Warning about high voltage and waiting periods before servicing.
Lists compatible indoor units and accessories for variable speed systems.
Cautionary notes on cleaning the outdoor coil to protect electrical components.
Specifies the operating temperature ranges for cooling and heating.
Table detailing specifications for Heat Pump models.
Continues the table of specifications for Heat Pump models.
Table detailing specifications for Air Conditioner models.
Continues the table of specifications for Air Conditioner models.
Prescribes subcooling charging for matched systems with indoor TXVs/EEVs.
Table providing R-410A refrigerant charging data based on liquid temperature.
Details the weigh-in method for system charging.
Explains the symbols and wire colors used in the wiring diagram.
Provides important notes regarding power supply and wiring compliance.
Describes the function and connection of the outdoor temperature sensor.
Describes the function and connection of the electronic expansion valve.
Describes the function and connection of the communicating display assembly.
Describes the fan speed signal connection.
Describes the LSOV connection.
Describes the HPCO connection and function.
Describes other key connection points on the IVSC board.
Table detailing LED indicators, their rates, descriptions, and indications.
Explains sump heat control guidelines and operation.
Overview of the IVSC, communication, and system data flow.
Details the operation of the system in cooling mode.
Details the operation of the system in heating mode.
Explains the defrost mode initiation from cycling stage.
Explains the defrost mode initiation from modulating stage.
Explains how demand defrost is measured and determined.
How fault conditions are indicated and defrost is enabled.
How defrost initiation is calculated based on temperature differences.
Illustrates the menu path for initiating forced defrost.
Details the Compressor Dome Temperature Sensor, its readings, and connections.
Details the Ambient Temperature Sensor, its readings, and required functions.
Details the Coil Temperature Sensor, its readings, and functions.
Details the Suction Temperature Sensor, its readings, and functions.
Details the Suction Line Pressure Transducer, its readings, and required functions.
Lists alert codes related to control failures and their causes.
Lists alerts for high pressure monitor faults and their causes.
Lists alerts for ground faults and their causes.
Lists alerts related to communication errors and their causes.
Lists alerts related to sensor faults and their causes.
Lists alerts for parameter and communication issues.
Lists alerts related to drive current failures.
Lists alerts for inverter temperature failures.
Lists alerts for supply voltage failures.
Lists alerts related to drive failures (gate, motor, stall).
Lists alerts for initialization and configuration errors.
Lists alerts related to startup algorithm failures.
Lists alerts for protection algorithm faults.
Continues listing protection algorithm fault codes.
Lists alerts related to protection derating faults.
Continues listing protection derating fault codes.
Lists MOC protection derating fault codes.
Lists alerts related to evacuation mode.
Lists MOC internal error alerts.
Lists alerts for control board temperature issues.
Lists alerts related to outdoor fan faults.
Lists alerts for unit bus communication faults.
Describes keypad error conditions.
Shows the refrigeration circuit for a 2-ton heat pump.
Shows the refrigeration circuit for a 3-ton heat pump.
Shows the refrigeration circuit for a 4-ton heat pump.
Shows the refrigeration circuit for another 4-ton heat pump.
Shows the refrigeration circuit for a 5-ton heat pump.
Shows the refrigeration circuit for a 2-ton air conditioner.
Shows the refrigeration circuit for a 3-ton air conditioner.
Shows the refrigeration circuit for a 4-ton air conditioner.
Shows the refrigeration circuit for a 5-ton air conditioner.
Explains the function of external shutdown for load shedding.
Shows the IVSC board and its connection points for load shedding.
Troubleshooting steps for when no LEDs are lit.
Flowchart for diagnosing breaker trips and related faults.
Steps for troubleshooting drive current failures and compressor start issues.
Steps to verify compressor parameters and model match.
Flowchart for running and interpreting the drive diagnostic test.
Procedure for verifying compressor shorts.
Procedure for verifying compressor winding opens.
Identifies causes and actions for excessive rectifier/inverter temperature.
Troubleshooting steps for a stuck closed EEV.
Troubleshooting steps for a stuck open EEV.
Procedure to check EEV sensor calibration.
Describes the home screen layout and system status display.
Displays system status, demand, speed, and sensor readings.
Shows drive parameters like power, voltage, amps, and temperatures.
Displays system run times and cycle counts.
Shows currently active alerts and their details.
Displays stored alerts, counts, and time since occurrence.
Lists configurable system parameters and options.
Notes on blower delays and EMI settings.
Initiates the drive diagnostic test.
Procedure for running the outdoor fan test.
Notes on performing the forced defrost test.
Notes for performing EEV tests.
Notes for performing LSOV tests.
Notes for executing the evacuation mode.
Notes on initiating and using charging modes.
Displays cooling pressure curves for model 4TWV8024A.
Displays cooling pressure curves for model 4TWV8036A.
Displays cooling pressure curves for model 4TWV8037A.
Displays cooling pressure curves for model 4TWV8048A.
Displays cooling pressure curves for model 4TWV8049A.
Displays cooling pressure curves for model 4TWV8060A.
Displays cooling pressure curves for model 4TTV8024A.
Displays cooling pressure curves for model 4TTV8036A.
Displays cooling pressure curves for model 4TTV8037A.
Displays cooling pressure curves for model 4TTV8048A.
Displays cooling pressure curves for model 4TTV8060A.
Table showing sound power levels for various models and conditions.
Table showing sound pressure levels at different distances.
Continues table of sound power levels.
Continues table of sound pressure levels.
Process for warranty claims related to the variable speed control drive.
Steps required for obtaining pre-authorization for warranty claims.
