American Standard & Trane AUD1D120A9601AB Hot Surface Ignitor User Manual

1. Introduction

This document provides comprehensive instructions for the installation, operation, and maintenance of the American Standard & Trane AUD1D120A9601AB Hot Surface Ignitor. This component is an Original Equipment Manufacturer (OEM) replacement part designed for specific American Standard and Trane furnace units. The hot surface ignitor is a critical component in the furnace's ignition system, responsible for igniting the gas burner.

This ignitor is a silicon-nitride type, operating at 80V, and includes the necessary bracket and screws for installation. It is designed to replace various ignitor models, including IGN104, IGN-104, IGN0104, IGN-0104, IGN00104, IGN117, IGN00117, IGN00145, IGN145, IGN0145, IGN-0145, IGN00117, IGN-0117, IGN0117, A341947P01, and A341948P02.

Image 1.1: Official Trane OEM Component Stamp. This image displays a blue and red stamp indicating 'Trane OEM Component', signifying the part's authenticity and quality as an original equipment manufacturer component.

2. Safety Information

WARNING: Installation and service of heating, ventilation, and air conditioning (HVAC) equipment can be hazardous and requires specialized knowledge and training. Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. Read and understand these instructions thoroughly before proceeding. Only qualified service personnel should install or service this equipment.

• Electrical Hazard: Always disconnect all electrical power to the furnace unit before installing or servicing the ignitor. Failure to do so can result in electrical shock, personal injury, or death.
• Gas Hazard: Ensure the gas supply to the furnace is turned off before working on the ignition system. Gas leaks can cause explosions or fires.
• Burn Hazard: Furnace components can be hot. Allow sufficient time for the furnace to cool down before handling any parts.
• Fragile Component: The silicon-nitride ignitor element is fragile. Avoid touching the ignitor element with bare hands or allowing it to strike hard surfaces, as oils from skin or impact can damage it.
• Personal Protective Equipment: Wear appropriate personal protective equipment (PPE), including safety glasses and gloves, during installation and service.

3. Package Contents

Verify that all components listed below are present and undamaged upon opening the package:

• 1x American Standard & Trane AUD1D120A9601AB Hot Surface Ignitor (Silicon-Nitride, 80V)
• 1x Mounting Bracket
• Mounting Screws
• Installation Guide (this document)

Image 3.1: The ignitor as packaged in its box. The box is white with 'ServiceFirst' branding and product details including 'IGN00145, IGNITOR, SILICON-NITRIDE, 80V, INCLUDES BRACKET, SCREWS AND INSTALLERS GUIDE'.

Image 3.2: The AUD1D120A9601AB Hot Surface Ignitor and its mounting bracket. The ignitor features a white ceramic base with a black silicon-nitride element, connected by wires to a white electrical connector. The metal mounting bracket is shown separately.

4. Installation

This procedure should only be performed by a qualified HVAC technician. Ensure all safety precautions in Section 2 are followed before beginning.

4.1 Pre-Installation Steps

1. Turn off the electrical power to the furnace at the main service panel. Verify power is off using a voltage meter.
2. Turn off the gas supply to the furnace.
3. Allow the furnace to cool completely if it has been recently operating.
4. Locate the existing hot surface ignitor within the furnace's burner assembly. It is typically positioned near the gas burners.

4.2 Removing the Old Ignitor

1. Carefully disconnect the electrical connector from the old ignitor.
2. Unscrew any mounting screws securing the ignitor or its bracket to the burner assembly.
3. Gently remove the old ignitor and bracket from the furnace. Note its orientation for proper installation of the new part.

4.3 Installing the New Ignitor

1. Attach the new AUD1D120A9601AB ignitor to the provided mounting bracket using the new screws. Ensure the ignitor is securely fastened and oriented correctly as the old one was.
2. Carefully insert the new ignitor and bracket assembly into the furnace's burner section. Avoid touching the silicon-nitride element.
3. Secure the bracket to the furnace using the provided mounting screws. Do not overtighten.
4. Connect the electrical connector from the furnace wiring harness to the new ignitor. Ensure a snug and secure connection.

4.4 Post-Installation Steps

1. Restore the gas supply to the furnace.
2. Restore electrical power to the furnace at the main service panel.
3. Initiate a call for heat at the thermostat to test the furnace operation. Observe the ignitor for proper glowing and subsequent burner ignition.
4. If the furnace does not operate correctly, refer to the Troubleshooting section or contact a qualified technician.

5. Operation

The AUD1D120A9601AB Hot Surface Ignitor operates automatically as part of the furnace's ignition sequence. When the thermostat calls for heat, the furnace control board sends power to the ignitor, causing its silicon-nitride element to heat up to a high temperature (glow). Once the ignitor reaches the appropriate temperature, the gas valve opens, and the gas flows over the hot ignitor, causing it to ignite. The ignitor then typically de-energizes after the flame is established and sensed by the furnace's flame sensor.

6. Maintenance

The hot surface ignitor is generally a maintenance-free component. However, periodic inspection by a qualified HVAC technician is recommended as part of routine furnace maintenance. During inspection, the technician can check for:

• Cracks or damage to the silicon-nitride element.
• Corrosion or damage to the electrical connections.
• Accumulation of dust or debris around the ignitor.

Keep the furnace area clean and free of obstructions to ensure proper airflow and operation.

7. Troubleshooting

If your furnace is not igniting, the hot surface ignitor may be a contributing factor. Below are common symptoms and potential causes. Always consult a qualified HVAC technician for diagnosis and repair.

8. Specifications

9. Warranty and Support

For information regarding the warranty of your American Standard & Trane AUD1D120A9601AB Hot Surface Ignitor, please refer to the original purchase documentation or contact the seller or Trane Parts directly. Technical support and service should be handled by qualified HVAC professionals.

For further assistance, please contact your authorized Trane Parts dealer or a certified HVAC technician.