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This OEM ignition assembly for the ICP / Tempstar / Heil WPG4304040LKB1 covers both the hot surface igniter (part 1177663) and the matching ignition control board (part 1186861). The hot surface igniter is a silicon element that glows orange-hot when energized, lighting the burners at the start of every heat cycle. The control board sequences the ignition — energizing the igniter, opening the gas valve, and proving flame before allowing the cycle to continue. Igniters are brittle and degrade with each heat cycle until they crack or fail to reach ignition temperature, while a failed board causes lockouts, no ignition, or short cycling. Replacing the worn igniter and, where needed, the control board restores reliable, safe lighting.
| Spec | Value |
|---|---|
| Igniter Part Number | 1177663 |
| Control Board Part Number | 1186861 |
| Type | Hot Surface Igniter w/ Ignition Control Board |
| Brand | ICP (Tempstar / Heil) |
| Igniter Voltage | 120V |
| Fitment | OEM Replacement |
Designed as a direct OEM fit for the ICP / Tempstar / Heil WPG4304040LKB1 packaged gas furnace. Both components are the factory-specified parts for this model, so they install without adapters. Verify which part has failed — many no-heat calls are solved by the igniter alone.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.