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This genuine OEM hot surface igniter assembly covers the ignition components for the ICP / Tempstar / Heil WPG4424090LKB1 package gas/electric unit, including the ignitor (part number 1177663) and the igniter control board (part number 1186861). On a call for heat, the control board sequences the inducer and then sends voltage to the hot surface igniter, which glows red-hot to light the main burners. The igniter is the most failure-prone part in a gas heat cycle because the silicon-carbide or silicon-nitride element is brittle and degrades with every heat cycle. A cracked igniter or a board that no longer energizes it is the classic cause of a furnace that clicks, runs the inducer, but never lights.
| Spec | Value |
|---|---|
| Part Numbers | 1186861 (Control Board Igniter), 1177663 (Ignitor) |
| Type | Hot Surface Igniter |
| Brand | ICP / Tempstar / Heil |
| Function | Burner Ignition |
| Fit | OEM Direct Replacement |
Designed for the WPG4424090LKB1 package gas unit and related ICP, Tempstar, Heil, and Comfortmaker gas furnaces using this igniter and ignition control. Match your existing part numbers before ordering.
Ships same day on orders placed before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.