ICP Hot Surface Igniter for WPG4484115LKA1 — OEM 1177663/1186861 | Ships Today

Overview

This OEM hot surface igniter is the direct-fit replacement for the ignition assembly on the ICP/Tempstar/Heil WPG4484115LKA1 gas furnace, covering OEM part numbers 1177663 (IGNITOR) and 1186861 (CONTROL BOARD IGNITER). The igniter is a 120V silicon-based element that glows red-hot on a heat call to light the main burners. It is the single most common failure point in a modern furnace's heating sequence. When an igniter cracks or its element ages out, the furnace will cycle through its trial-for-ignition, fail to light, and lock out — leaving you with a blower that runs but no heat. Replacing this wear item restores reliable, on-demand ignition.

Specifications

Compatibility

Engineered for the ICP/Tempstar/Heil WPG4484115LKA1 packaged gas unit and shared-platform furnaces using the same ignition control. Always confirm your unit's model and serial tag before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter and shut off the gas.
2. Access — Remove the furnace service panel to expose the burner assembly.
3. Document — Photograph the igniter mounting and wire routing before disconnecting.
4. Remove — Unplug the igniter connector and remove the mounting screw; lift the brittle old igniter out without touching the element.
5. Install — Mount the new igniter handling it only by its ceramic base, secure the screw, and reconnect the plug per your photo.
6. Test — Restore gas and power, trigger a heat call, and confirm the igniter glows and the burners light.

Signs You Need a Replacement

• Furnace blower runs but no heat / no burner flame
• Control board locks out after multiple ignition attempts
• Igniter shows no glow or a visible crack in the element
• Intermittent ignition that worsens over time

Shipping & Returns

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