How to replace the igniter in the York TM8V 80% AFUE Two Stage Variable Speed Furnace?

Replacing the igniter in your York TM8V 80% AFUE Two-Stage Variable Speed Furnace is a relatively straightforward process, but it requires careful handling and attention to safety. The igniter is a crucial component responsible for igniting the furnace's burners, so it's essential to ensure it's in good working condition. Here's a step-by-step guide on how to replace the igniter:

Tools and Materials Needed:
* Replacement igniter (ensure it's compatible with your specific York TM8V model)
* Screwdriver set (Phillips and flathead)
* Nut driver or socket set
* Safety glasses and gloves
* Electrical tape
* Voltmeter (optional)


Safety Precautions:
* Turn Off Power: Before starting any maintenance, turn off the power to the furnace at the circuit breaker or disconnect switch to prevent electrical shock.
* Wait for Cooling: Allow the furnace to cool down completely before attempting any maintenance. This ensures safety and prevents burns.
* Wear Safety Gear: Always wear safety glasses and gloves when working on HVAC equipment.


Replacing the Igniter:
1. Locate the Igniter:
The igniter is typically located near the burner assembly inside the furnace. It's a small, rectangular or oval-shaped component. Refer to your furnace's user manual for the exact location if you are unsure.
2. Disconnect the Power:
Double-check that the power to the furnace is turned off at the circuit breaker or disconnect switch.
3. Remove Access Panels:
Access to the igniter may require removing one or more access panels on the furnace. Use a screwdriver to loosen and remove the screws holding these panels in place. Set the panels aside.
4. Identify the Igniter Wiring:
Examine the wiring connected to the igniter. There are typically two wires attached to it—one leading to the control board and another to the igniter itself. Carefully note their positions for reinstallation.
5. Disconnect the Igniter Wires:
Carefully disconnect both wires from the igniter. To prevent confusion when reconnecting, you can label them or use electrical tape to mark which wire goes where.
6. Remove the Old Igniter:
The igniter is usually held in place by one or more screws or clips. Use a screwdriver or nut driver to remove these fasteners and carefully detach the old igniter from its bracket or mounting point. Take care not to damage any other components during this process.
7. Install the New Igniter:
Position the new igniter in the same location and orientation as the old one. Secure it in place using the screws or clips that you removed in the previous step. Ensure it is properly seated and aligned.
8. Reconnect the Igniter Wires:
Reattach the wires to the new igniter. Connect each wire to its corresponding terminal. Make sure the connections are secure.
9. Reassemble Access Panels:
Place any removed access panels back onto the furnace and secure them with the screws you removed earlier.
10. Turn On Power:
Restore power to the furnace by flipping the circuit breaker or reconnecting the disconnect switch.
11. Test the Furnace:
Set your thermostat to call for heating, and observe the furnace's operation. The new igniter should glow red-hot, igniting the burners. If it does not, or if you encounter any issues, turn off the furnace immediately and seek professional assistance.
12. Optional Testing with Voltmeter:
If you have a voltmeter, you can measure the voltage at the igniter terminals to ensure it's receiving power when the furnace is in heating mode. Be cautious and refer to your furnace's manual for specific voltage requirements.

By following these steps, you can replace the igniter in your York TM8V 80% AFUE Two-Stage Variable Speed Furnace. Regular maintenance and ensuring that critical components like the igniter are in good working order are essential for the efficient and reliable operation of your furnace. If you encounter any difficulties or are uncertain about any step, it's advisable to seek assistance from a qualified HVAC technician to ensure the job is done correctly.