Inducer motor runs continuously but burners do not light.

Safety: Turn off power and gas before servicing.

Steps to check:

• Check error code: Look at the Heil furnace LED to see if a specific code is present; follow that code's troubleshooting.
• Inspect pressure switch: Ensure the pressure switch is not stuck closed at rest using a multimeter (should be open with inducer off).
• Check ignitor wiring: Verify the ignitor plug is fully seated and wires are intact.
• Inspect rollout and limit switches: Look for tripped manual-reset rollout switches and reset only once if no damage is visible.

When to call a pro: If the inducer runs indefinitely without ignition, a technician should diagnose the control board logic, pressure switch operation, and safety circuits.