Vicue SEN01114 Furnace Flame Sensor Manual

1. Introduction

This manual provides essential information for the safe and effective installation, operation, and maintenance of the Vicue SEN01114 Furnace Flame Sensor. This component is a critical safety device designed to ensure the proper functioning of your furnace by detecting the presence of a flame during operation. Please read these instructions thoroughly before proceeding with installation or any maintenance.

Image 1.1: Two Vicue SEN01114 Furnace Flame Sensors.

2. Safety Information

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. Installation and service must be performed by a qualified installer, service agency, or the gas supplier.

• Always disconnect electrical power to the furnace before servicing to prevent electrical shock.
• Turn off the gas supply to the furnace before working on gas components to prevent gas leaks or explosions.
• Wear appropriate personal protective equipment (PPE), such as gloves and eye protection.
• Ensure the work area is well-ventilated.
• Verify that the replacement part is compatible with your specific furnace model.

3. Product Overview

The Vicue SEN01114 is a high-quality replacement flame sensor designed for use in various Trane and American Standard furnace models. Its primary function is to detect the presence of a flame in the burner assembly. If a flame is not detected after ignition, the sensor signals the furnace control board to shut off the gas supply, preventing the accumulation of unburnt gas and ensuring safety.

Key Features:

• Direct replacement for part numbers: SEN01114, SEN337, SEN0337, SEN441, SEN0441, SEN491, SEN00491, SEN1114, PSE-T19, B340888-2.
• Constructed from durable materials for reliable performance and longevity.
• Ensures safe furnace operation by monitoring flame presence.

Compatible Furnace Models (Partial List):

This sensor is compatible with a wide range of Trane/American Standard furnaces, including but not limited to models such as AUY120R9V5W6, CDB060A936D3, CDB060A937D3, CDB080A945D3, CDB100A945D3, CDB100A960D3, ADC1B040A9241AA, ADD1B060A9361AA, ADE1B080A9451AA, AUC1B080A9421AA, and many others listed in the product description.

4. Installation

The installation of the flame sensor is a straightforward process, but it requires adherence to safety protocols. If you are not comfortable performing this task, please contact a qualified HVAC technician.

1. Power and Gas Disconnection: Locate your furnace's circuit breaker and turn off the electrical power. Also, turn off the gas supply valve to the furnace.
2. Access the Burner Compartment: Remove the furnace access panel(s) to expose the burner assembly and flame sensor.
3. Locate the Old Sensor: Identify the existing flame sensor. It is typically a thin metal rod with a ceramic insulator, positioned in the path of the burner flame.
4. Disconnect and Remove: Carefully disconnect the wire leading to the old flame sensor. Using a wrench or nut driver, unfasten the mounting screw(s) that secure the sensor to the burner assembly. Gently pull out the old sensor.
5. Install New Sensor: Insert the new Vicue SEN01114 flame sensor into the mounting bracket. Ensure it is positioned correctly, mimicking the orientation of the old sensor. Secure it with the mounting screw(s), ensuring it is snug but not overtightened.
6. Reconnect Wiring: Attach the wire to the terminal of the new flame sensor. Ensure a secure connection.
7. Restore Power and Gas: Replace the furnace access panel(s). Turn the gas supply back on, then restore electrical power to the furnace at the circuit breaker.
8. Test Operation: Initiate a heating cycle on your thermostat to test the furnace. Observe the ignition sequence to ensure the burners light and remain lit.

Image 4.1: Simplified installation overview.

5. Operating Principle

The flame sensor operates on the principle of flame rectification. When the furnace ignites, the flame creates a conductive path for a small electrical current. The flame sensor detects this current, signaling to the furnace's control board that a flame is present and stable. If the sensor does not detect this current (meaning no flame is present or the flame is unstable), the control board will shut off the gas valve to prevent unburnt gas from accumulating, which is a critical safety measure.

Image 5.1: Flame sensor detecting furnace flame.

6. Maintenance

Regular maintenance of your furnace, including the flame sensor, is crucial for efficient and safe operation. Over time, the flame sensor can accumulate carbon deposits, which can interfere with its ability to detect the flame accurately.

• Annual Inspection: It is recommended to have your furnace, including the flame sensor, inspected annually by a qualified technician.
• Cleaning: If carbon buildup is observed on the flame sensor, it can often be cleaned. With the power and gas disconnected (as per Section 2), carefully remove the sensor and gently clean the metal rod with fine-grit sandpaper or steel wool. Avoid bending the rod or damaging the ceramic insulator. Reinstall the sensor as per Section 4.
• Replacement: If cleaning does not resolve issues, or if the sensor shows signs of physical damage (cracks in ceramic, severe corrosion), it should be replaced.

7. Troubleshooting

A malfunctioning flame sensor is a common cause of furnace issues. If your furnace is exhibiting the following symptoms, the flame sensor may need attention:

• Furnace Not Igniting: The furnace attempts to ignite but fails, or the igniter glows but no flame appears.
• Furnace Ignites Then Shuts Off Quickly: The burners light for a few seconds and then extinguish, often repeating this cycle multiple times. This is a common symptom of a dirty or faulty flame sensor failing to prove the flame.
• Furnace Stalling Frequently: The furnace cycles on and off more often than usual, or struggles to maintain consistent heat.

If you experience these issues, inspect the flame sensor for carbon buildup and clean it as described in the Maintenance section. If the problem persists, consider replacing the sensor.

Image 7.1: Common issues resolved by a functional flame sensor.

8. Specifications

9. Warranty and Support

For information regarding product warranty, returns, or technical support, please contact the manufacturer, Vicue, directly through their official customer service channels. Keep your purchase receipt as proof of purchase.