Frigidaire FFBN1721TV0

Questions and Answers

B
Brian ReyesAug 6, 2025
What to do if there is a communication fault in my Frigidaire FFBN1721TV0?
- J
  Jane Brown PhDAug 6, 2025
  If you are experiencing a communication fault with your Frigidaire Refrigerator, first check the terminal CN8 of the main control board. Ensure it's properly connected by disconnecting and reconnecting it, and clean away any foreign particles. If the issue persists, the next step is to replace the main control board. If that doesn't resolve the problem, consider replacing the display control board. Finally, ensure that the cables of the main display board are securely connected.
A
Adam EllisAug 12, 2025
How to fix a temperature sensor fault in the fresh-food compartment of my Frigidaire FFBN1721TV0?
- A
  adunnAug 12, 2025
  If you're encountering a temperature sensor fault in the fresh-food compartment of your Frigidaire Refrigerator, start by checking the terminal CN1 to ensure it's properly connected. Disconnect and reconnect it, cleaning away any foreign particles. If the problem continues, remove the refrigerating sensor and compare its readings against the resistance value table. If necessary, replace the main control board. As a final measure, replace the main wiring harness.
S
Samuel SanchezAug 19, 2025
How to troubleshoot a defrost sensor fault in the fresh-food compartment of a Frigidaire FFBN1721TV0 Refrigerator?
- C
  Caleb PalmerSep 12, 2025
  If you have a defrost sensor fault in the fresh-food compartment of your Frigidaire Refrigerator, check the terminal CN3 to ensure it is properly connected. Disconnect and reconnect the terminal, and clean away any foreign particles. If the problem persists, take out the defrost sensor in the fresh-food compartment and inspect the sensor against the resistance value table. If this doesn't resolve the issue, replace the main control board. Finally, consider replacing the main wiring harness.
J
Justin AguilarAug 25, 2025
What to do if the defrost sensor is faulty in the freezer compartment of my Frigidaire Refrigerator?
- D
  davidriosAug 25, 2025
  To resolve a defrost sensor fault in the freezer compartment of your Frigidaire Refrigerator, start by verifying the connection of the terminal CN3. Disconnect and reconnect it, ensuring any foreign particles are removed. If the problem continues, remove the defrost sensor in the freezer compartment and check its readings against the resistance value table. If necessary, replace the main control board. Lastly, replace the main wiring harness if needed.
P
Patrick FisherAug 30, 2025
What should I do if my Frigidaire FFBN1721TV0 displays a fault of humidity sensor?
- B
  briansnyderAug 30, 2025
  If you're encountering a fault with the humidity sensor in your Frigidaire Refrigerator, begin by checking the terminal CN2 of the main control board. Disconnect and reconnect it, ensuring it's free of any foreign particles. Next, verify that the sensor wiring harness is properly connected. If the problem persists, replace the main control board. As another solution, remove and replace the temperature and humidity sensor at the door hinge.

Summary

Important Safety Instructions

Safe Servicing Practices

Guidelines for safe servicing of appliances to prevent injury or damage.

Important Safety Instructions

Safety Precautions and Hazard Warnings

General safety measures, fire, and electrical shock warnings for servicing.

Refrigerant Safety Instructions

Guidelines for safe handling and servicing of refrigerants.

Servicing Workflow: Before, During, After

Steps to follow before, during, and after appliance servicing.

Important Safety Instructions

General Warnings and Precautions

Comprehensive warnings and precautions for appliance operation and servicing.

Important Safety Instructions

Grounding Instructions

Guidelines for proper electrical grounding of the appliance.

ESD Precautions

Measures to protect against ESD when handling electronic components.

Product Information

Model Layout

Diagram showing the physical layout of major refrigerator components.

Product Information

External Dimension

Detailed measurements of the refrigerator's external dimensions in mm.

Product Information

Technical Specification

Key specifications including product name, compressor, climate, voltage, and refrigerant.

Electrical Parameters

Details on electrical components like compressor, motor, and lights.

Defrosting Parts

Information on defrosting period, sensor, thermal fuse, and heater.

Product Information

Refrigerating Temperature

Table detailing temperature offsets based on ambient temperature.

Circuit Diagram

Schematic illustrating the electrical connections of the refrigerator components.

Installation and Commissioning

Handling, Location, and Door;Level Adjustment

Procedures for moving, siting, and adjusting the refrigerator for installation.

Product Information

Refrigerating Piping System

Diagram illustrating the flow of refrigerant through the system components.

Product Information

3-Way Valve Operation and Testing

Explains the 3-way valve's function, connections, and testing procedures.

Fan Motor Theory of Operation

Details on how the fan motor speed is controlled by the system.

Removal and Replacement of Parts

Door Seal Removal

Instructions for removing and replacing the refrigerator door seal.

Light Assembly Removal

Procedure for removing and replacing the interior light assembly.

Air Duct Removal (Fresh-food)

Steps to remove and replace the air duct in the fresh-food compartment.

Removal and Replacement of Parts

Fan Motor Removal (Fresh-food)

Steps to remove and replace the fan motor in the fresh-food compartment.

Removal and Replacement of Parts

Fresh-food Sensors and Evaporator

Procedures for removing fresh-food sensors and evaporator.

Removal and Replacement of Parts

Deodorizer Removal

Instructions for removing and replacing the deodorizer unit.

Rollover Beam Removal

Procedure for removing and replacing the rollover beam.

Removal and Replacement of Parts

Freezer Partition Removal

Steps to remove and replace the freezer compartment partition.

Air Duct Removal (Freezer)

Procedure for removing and replacing the air duct in the freezer compartment.

Fan Motor Removal (Freezer)

Instructions for removing and replacing the freezer compartment fan motor.

Removal and Replacement of Parts

Freezer Sensors and Evaporator

Procedures for removing freezer sensors and evaporator.

Removal and Replacement of Parts

External and Control Component Removal

Procedures for removing light switch, sensors, and control panels.

Sealed System

Warnings

Important safety warnings and regulations regarding refrigerant handling and servicing.

Sealed System

System Introduction, Components, and Definitions

Overview of R-134a system, components, and refrigerant terms.

Sealed System

System Charging, Soldering, and Cycle

Procedures for charging refrigerant, soldering, and understanding the cycle.

Sealed System

Recovering Refrigerant

Step-by-step guide for safely removing refrigerant from the system.

Leak Detection and Undercharge

Symptoms and causes of refrigerant leaks or undercharging.

Sealed System

Refrigerant Leak Testing

Methods for identifying and testing for refrigerant leaks.

Internal Leaks and Compressor Replacement

Procedure for detecting internal leaks and replacing the compressor.

Sealed System

System Flushing and Compressor Installation

Procedures for flushing the system and installing a new compressor.

Sealed System

Freezer Evaporator and Suction Line Replacement

Procedure for replacing the freezer evaporator and suction line.

Sealed System

Filter-drier and Condenser Replacement

Procedures for replacing the filter-drier and condenser.

Sealed System

Evacuation and Recharging Equipment Setup

Steps for setting up equipment for evacuation and recharging.

Evacuating the System

Procedure for achieving the required vacuum level in the system.

Sealed System

Charging, Leak Testing, and Equipment

Steps for charging, leak testing, and dedicated equipment requirements.

Sealed System

Vacuum Pump Maintenance and Chart

Guidelines for vacuum pump maintenance and vacuum level chart.

Function & Operation

Control Panel, Locking, Temperature, and Modes

Guide to operating the control panel, locking, temperature, and modes.

Function & Operation

Test Mode, Operating Modes, and Self-Diagnosis

How to use test mode, operating modes, and perform self-diagnosis.

Function & Operation

Display Inspection, Defrost, and Air Circulation

Covers display inspection, defrost principles, and air circulation patterns.

Troubleshooting

Refrigeration Fault Codes and Solutions

List of fault codes, their visibility, and corrective actions.

Troubleshooting

No Cooling Diagnosis

Diagnostic flowchart for 'No Cooling' issues in both compartments.

Troubleshooting

Cooling Issues in Both Compartments

Flowchart for diagnosing cooling issues in both compartments.

Troubleshooting

Compressor Failure Diagnosis

Diagnostic flowchart for compressor failure issues.

Troubleshooting

Defrosting Problems Diagnosis

Flowchart for diagnosing and resolving defrosting problems.

Troubleshooting

Fan Failure Diagnosis

Diagnostic flowchart for fan motor failure issues.

Troubleshooting

Interior Lights Not Switching Off

Flowchart for troubleshooting interior lights that do not switch off.

Electrical Diagrams

Main Board Connections

Diagram and description of the main control board connections.

Electrical Diagrams

Power Supply Circuit

Schematic and explanation of the refrigerator's power supply circuit.

Electrical Diagrams

Door Switch Test Circuit

Diagram of the test circuit for the fresh-food compartment door switches.

Electrical Diagrams

Freezer Fan Motor Circuit

Schematic of the freezer compartment fan motor circuit.

Electrical Diagrams

Sensor Test Circuit

Diagram of the test circuit for various temperature sensors.

Electrical Diagrams

Sensor Resistance Values (R;T)

Table of resistance values for sensors at different temperatures.

Summary

Important Safety Instructions

Safe Servicing Practices

Guidelines for safe servicing of appliances to prevent injury or damage.

Important Safety Instructions

Safety Precautions and Hazard Warnings

General safety measures, fire, and electrical shock warnings for servicing.

Refrigerant Safety Instructions

Guidelines for safe handling and servicing of refrigerants.

Servicing Workflow: Before, During, After

Steps to follow before, during, and after appliance servicing.

Important Safety Instructions

General Warnings and Precautions

Comprehensive warnings and precautions for appliance operation and servicing.

Important Safety Instructions

Grounding Instructions

Guidelines for proper electrical grounding of the appliance.

ESD Precautions

Measures to protect against ESD when handling electronic components.

Product Information

Model Layout

Diagram showing the physical layout of major refrigerator components.

Product Information

External Dimension

Detailed measurements of the refrigerator's external dimensions in mm.

Product Information

Technical Specification

Key specifications including product name, compressor, climate, voltage, and refrigerant.

Electrical Parameters

Details on electrical components like compressor, motor, and lights.

Defrosting Parts

Information on defrosting period, sensor, thermal fuse, and heater.

Product Information

Refrigerating Temperature

Table detailing temperature offsets based on ambient temperature.

Circuit Diagram

Schematic illustrating the electrical connections of the refrigerator components.

Installation and Commissioning

Handling, Location, and Door;Level Adjustment

Procedures for moving, siting, and adjusting the refrigerator for installation.

Product Information

Refrigerating Piping System

Diagram illustrating the flow of refrigerant through the system components.

Product Information

3-Way Valve Operation and Testing

Explains the 3-way valve's function, connections, and testing procedures.

Fan Motor Theory of Operation

Details on how the fan motor speed is controlled by the system.

Removal and Replacement of Parts

Door Seal Removal

Instructions for removing and replacing the refrigerator door seal.

Light Assembly Removal

Procedure for removing and replacing the interior light assembly.

Air Duct Removal (Fresh-food)

Steps to remove and replace the air duct in the fresh-food compartment.

Removal and Replacement of Parts

Fan Motor Removal (Fresh-food)

Steps to remove and replace the fan motor in the fresh-food compartment.

Removal and Replacement of Parts

Fresh-food Sensors and Evaporator

Procedures for removing fresh-food sensors and evaporator.

Removal and Replacement of Parts

Deodorizer Removal

Instructions for removing and replacing the deodorizer unit.

Rollover Beam Removal

Procedure for removing and replacing the rollover beam.

Removal and Replacement of Parts

Freezer Partition Removal

Steps to remove and replace the freezer compartment partition.

Air Duct Removal (Freezer)

Procedure for removing and replacing the air duct in the freezer compartment.

Fan Motor Removal (Freezer)

Instructions for removing and replacing the freezer compartment fan motor.

Removal and Replacement of Parts

Freezer Sensors and Evaporator

Procedures for removing freezer sensors and evaporator.

Removal and Replacement of Parts

External and Control Component Removal

Procedures for removing light switch, sensors, and control panels.

Sealed System

Warnings

Important safety warnings and regulations regarding refrigerant handling and servicing.

Sealed System

System Introduction, Components, and Definitions

Overview of R-134a system, components, and refrigerant terms.

Sealed System

System Charging, Soldering, and Cycle

Procedures for charging refrigerant, soldering, and understanding the cycle.

Sealed System

Recovering Refrigerant

Step-by-step guide for safely removing refrigerant from the system.

Leak Detection and Undercharge

Symptoms and causes of refrigerant leaks or undercharging.

Sealed System

Refrigerant Leak Testing

Methods for identifying and testing for refrigerant leaks.

Internal Leaks and Compressor Replacement

Procedure for detecting internal leaks and replacing the compressor.

Sealed System

System Flushing and Compressor Installation

Procedures for flushing the system and installing a new compressor.

Sealed System

Freezer Evaporator and Suction Line Replacement

Procedure for replacing the freezer evaporator and suction line.

Sealed System

Filter-drier and Condenser Replacement

Procedures for replacing the filter-drier and condenser.

Sealed System

Evacuation and Recharging Equipment Setup

Steps for setting up equipment for evacuation and recharging.

Evacuating the System

Procedure for achieving the required vacuum level in the system.

Sealed System

Charging, Leak Testing, and Equipment

Steps for charging, leak testing, and dedicated equipment requirements.

Sealed System

Vacuum Pump Maintenance and Chart

Guidelines for vacuum pump maintenance and vacuum level chart.

Function & Operation

Control Panel, Locking, Temperature, and Modes

Guide to operating the control panel, locking, temperature, and modes.

Function & Operation

Test Mode, Operating Modes, and Self-Diagnosis

How to use test mode, operating modes, and perform self-diagnosis.

Function & Operation

Display Inspection, Defrost, and Air Circulation

Covers display inspection, defrost principles, and air circulation patterns.

Troubleshooting

Refrigeration Fault Codes and Solutions

List of fault codes, their visibility, and corrective actions.

Troubleshooting

No Cooling Diagnosis

Diagnostic flowchart for 'No Cooling' issues in both compartments.

Troubleshooting

Cooling Issues in Both Compartments

Flowchart for diagnosing cooling issues in both compartments.

Troubleshooting

Compressor Failure Diagnosis

Diagnostic flowchart for compressor failure issues.

Troubleshooting

Defrosting Problems Diagnosis

Flowchart for diagnosing and resolving defrosting problems.

Troubleshooting

Fan Failure Diagnosis

Diagnostic flowchart for fan motor failure issues.

Troubleshooting

Interior Lights Not Switching Off

Flowchart for troubleshooting interior lights that do not switch off.

Electrical Diagrams

Main Board Connections

Diagram and description of the main control board connections.

Electrical Diagrams

Power Supply Circuit

Schematic and explanation of the refrigerator's power supply circuit.

Electrical Diagrams

Door Switch Test Circuit

Diagram of the test circuit for the fresh-food compartment door switches.

Electrical Diagrams

Freezer Fan Motor Circuit

Schematic of the freezer compartment fan motor circuit.

Electrical Diagrams

Sensor Test Circuit

Diagram of the test circuit for various temperature sensors.

Electrical Diagrams

Sensor Resistance Values (R;T)

Table of resistance values for sensors at different temperatures.

Frigidaire FFBN1721TV0 Specifications

General

Type	freestanding
Style	bottom freezer
Color	stainless steel, brushed steel
Number of Doors	4
Total Capacity	17.4 cubic feet
Refrigerator Capacity	11.9 cubic feet
Freezer Capacity	5.5 cubic feet
Defrost System	manual
Number of Refrigerator Shelves	3
Temperature Control	electronic
Interior Light	led
Dispenser	none
Ice Maker	no
Water Filter	no
Smart Home	no
Annual Energy Consumption	507 kilowatt hours
Voltage	115 volts