ICP Hot Surface Igniter for WPG4484130LKB1 — OEM 1186861/1177663 | Ships Today

Overview

This OEM hot surface igniter (HSI) is the direct-fit ignition component for the ICP Tempstar Heil WPG4484130LKB1 gas furnace, covering OEM part numbers 1186861 (control board igniter) and 1177663 (ignitor). The igniter is energized at the start of each heating cycle and glows to a high temperature to light the burner gas. Made from a durable silicon-nitride/carbide element, it is one of the most common wear items in any hot surface ignition furnace. When it fails, the furnace will draw the inducer and open the gas valve but never light, producing no heat and often a flashing control-board fault code.

Specifications

Compatibility

Engineered for the ICP / Tempstar / Heil WPG4484130LKB1 furnace. This igniter also services many ICP-family models that share the 1186861 / 1177663 ignition assembly. Always confirm your existing part number before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the burner-compartment service panel.
3. Document — Photograph the igniter bracket and wire routing before disconnecting.
4. Remove — Unplug the igniter connector and remove the mounting screw. Handle the old igniter by the ceramic base only.
5. Install — Mount the new igniter without touching the element, reconnect the harness, and reinstall the screw.
6. Test — Restore power and run a heating cycle; confirm the igniter glows and the burners light within seconds.

Signs You Need a Replacement

• Furnace runs the inducer but never lights the burners.
• No glow visible through the sight port during the ignition sequence.
• Igniter is cracked, blistered, or shows a broken element.
• Control board reports an ignition-failure or lockout fault code.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.