American Standard & Trane OEM Replacement Hot Surface Ignitor

Product Overview

This document provides essential information for the American Standard & Trane OEM Replacement Hot Surface Ignitor, model AUD080R948K5_Ignitor. This component is a silicon-nitride hot surface ignitor designed for use in various American Standard and Trane furnace units. It operates at 80V and includes the necessary bracket and screws for installation.

It serves as a direct replacement for several ignitor models, including IGN104, IGN-104, IGN0104, IGN-0104, IGN00104, IGN117, IGN00117, IGN00145, IGN145, IGN0145, IGN-0145, IGN00117, IGN-0117, IGN0117, A341947P01, and A341948P02.

Safety Information

WARNING: Installation and servicing of heating, ventilation, and air conditioning (HVAC) equipment can be hazardous and requires specific training and knowledge. This product should only be installed and serviced by qualified personnel. Failure to follow these instructions could result in property damage, personal injury, or death.

• Always disconnect power to the furnace before attempting any installation, maintenance, or troubleshooting.
• Wear appropriate personal protective equipment (PPE), including safety glasses and gloves.
• Ensure proper grounding of all electrical connections.
• Refer to the furnace manufacturer's specific installation and service manual for complete instructions.

Setup and Installation

This section outlines the general steps for replacing a hot surface ignitor. Always consult the specific furnace manufacturer's service manual for detailed, model-specific instructions.

1. Power Disconnection: Locate the main power switch for the furnace and turn it off. For added safety, turn off the circuit breaker supplying power to the furnace.
2. Access the Ignitor: Open the furnace access panel to locate the existing hot surface ignitor. It is typically located near the burners.
3. Disconnect Wiring: Carefully disconnect the electrical wires connected to the old ignitor. Note the orientation of the wires if they are not color-coded.
4. Remove Old Ignitor: Unscrew or unclip the old ignitor from its mounting bracket. Some ignitors may be fragile; handle with care.
5. Install New Ignitor: Mount the new AUD080R948K5 ignitor using the provided bracket and screws. Ensure it is securely fastened and positioned correctly according to the furnace manufacturer's specifications.
6. Connect Wiring: Connect the electrical wires to the new ignitor. Ensure connections are secure and correct.
7. Secure Access Panel: Close and secure the furnace access panel.
8. Restore Power: Restore power to the furnace at the circuit breaker and main power switch.
9. Test Operation: Initiate a call for heat to verify the ignitor functions correctly and the furnace cycles properly.

Image: The AUD080R948K5 hot surface ignitor, showing the silicon-nitride element, electrical wires, and the included metal mounting bracket.

Operating Principles

The hot surface ignitor is a critical component in modern gas furnaces, responsible for igniting the gas burners. When the thermostat calls for heat, the furnace control board sends voltage to the ignitor, causing its silicon-nitride element to heat up rapidly to a very high temperature (glowing red/orange).

Once the ignitor reaches its ignition temperature, the gas valve opens, allowing gas to flow over the hot ignitor. The gas ignites, creating a flame. A flame sensor then detects the presence of the flame, signaling the control board to keep the gas valve open and de-energize the ignitor. If no flame is detected, the gas valve will close, and the furnace will attempt to re-ignite or enter a lockout state for safety.

Maintenance

Hot surface ignitors are generally considered maintenance-free components. However, their lifespan can be affected by various factors, including furnace cycling frequency, voltage fluctuations, and environmental conditions.

• Annual Inspection: During routine furnace maintenance by a qualified technician, the ignitor should be visually inspected for cracks, discoloration, or signs of wear.
• Cleanliness: Ensure the area around the ignitor is free from dust, debris, or obstructions that could interfere with its operation or cause premature failure.
• Handling: When handling a new ignitor, avoid touching the silicon-nitride element with bare hands, as oils from the skin can create hot spots and reduce its lifespan.

Troubleshooting

If your furnace is not igniting, the hot surface ignitor may be a potential cause. Always ensure power is disconnected before inspecting components.

• No Glow from Ignitor:
  • Check for power to the furnace.
  • Verify the ignitor wiring connections are secure.
  • Test for voltage at the ignitor terminals when a call for heat is initiated (requires a multimeter and qualified personnel). If voltage is present but no glow, the ignitor is likely faulty and needs replacement.
  • Inspect the ignitor element for visible cracks or breaks. A cracked ignitor will not heat up.
• Ignitor Glows but No Ignition:
  • Ensure the gas supply to the furnace is open.
  • Check for proper gas pressure.
  • Inspect the flame sensor for dirt or corrosion, which can prevent it from detecting the flame.
  • Verify the gas valve is opening.

For complex issues or if you are unsure, it is highly recommended to contact a qualified HVAC technician.

Specifications

Image: The product packaging, indicating "ServiceFirst IGN00145 Ignitor, Silicon-Nitride, 80V" and "Made in Japan".

Warranty and Support

As an Original Equipment Manufacturer (OEM) component from Trane Parts, this ignitor is designed to meet the specifications and quality standards of American Standard and Trane systems. For specific warranty information, please refer to the documentation provided with your furnace or contact Trane Parts directly.

For technical support or assistance with installation, it is recommended to consult a certified HVAC professional or refer to the official service manuals for American Standard and Trane furnace models.

Image: A circular stamp graphic with "TRANE OEM COMPONENT" text, signifying the product's authenticity as an original equipment manufacturer part.