ICP Control Board for WPG3484090RKC1 — Integrated Ignition Control Module | Ships Today
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Overview
This genuine OEM control board / integrated ignition control module (part #1178358, with ignition control module #1177661) is the electronic brain of the ICP/Tempstar/Heil WPG3484090RKC1 packaged unit. It manages the entire heating sequence — energizing the inducer, proving the pressure switch, powering the hot surface igniter, opening the gas valve, monitoring flame, and sequencing the blower — while also handling safety lockouts and fault-code diagnostics via its LED. When the board fails, symptoms range from a completely dead unit to erratic operation, blower or inducer that won't start, ignition that never sequences, or repeated unexplained lockouts. Replacing the board with the correct OEM part restores the precise factory ignition timing and safety logic this model depends on.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1178358 (Circuit Board), 1177661 (Ignition Control Module) |
| Type | Integrated Furnace / Ignition Control Board |
| Brand | ICP (Tempstar / Heil) |
| Function | Ignition Sequencing, Flame Sensing, Blower & Safety Control |
| Diagnostics | On-board LED fault codes |
| Fit | OEM Direct Replacement |
Compatibility
Direct OEM fit for the ICP/Tempstar/Heil WPG3484090RKC1 packaged system. Because the board carries model-specific ignition timing and safety logic, use the exact OEM part rather than a generic substitute. Verify the connector layout and part number against your existing board before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the control compartment panel to expose the board.
- Document — Photograph every plug and wire on the board before disconnecting — this is critical for a correct reinstall.
- Remove — Unplug all connectors and remove the mounting screws/standoffs holding the board.
- Install — Mount the new board and reconnect each harness in the exact position shown in your photos.
- Test — Restore power, run a full heat cycle, and confirm proper ignition sequencing with no fault codes on the LED.
Signs You Need a Replacement
- Unit completely dead with confirmed 24V power present
- Inducer, igniter, or blower won't sequence on a call for heat
- Repeated lockouts or erratic, intermittent operation
- Error/fault LED codes pointing to a control failure
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days