ICP Furnace Control Board Kit for RGS300HTFA0AAAA — Integrated Ignition Control | Ships Today
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Overview
This OEM control board kit (part 1183618) is the brain of your ICP / Tempstar / Heil RGS300HTFA0AAAA package unit. The integrated control manages the ignition sequence, inducer and blower timing, flame sensing, safety lockouts, and the 24V signals to the gas valve and relays. When the board fails, the symptoms range widely: no response on a call for heat, blower or inducer that won't start or won't stop, intermittent lockouts, or flashing diagnostic LED fault codes. Because the board ties every major function together, a failed control is a frequent cause of hard-to-diagnose, intermittent furnace problems. This kit ships with the correct OEM board for direct replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Heil / Tempstar |
| Control Voltage | 24V |
| Function | Ignition, blower & safety control |
Compatibility
Direct-fit replacement for the ICP/Heil/Tempstar RGS300HTFA0AAAA model and related RGS-series units that specify this control kit. Verify the connector layout and part number against your existing board before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker; verify zero voltage with a multimeter.
- Access — Remove the control/blower compartment panel.
- Document — Photograph every plug, wire, and connector position before disconnecting — this is critical for a control board.
- Remove — Unplug each harness, release the board mounting standoffs/screws, and lift out the old board.
- Install — Mount the new board, then reconnect every harness to the matching connector per your photos.
- Test — Restore power, run a full heat and cool cycle, and confirm correct timing with no fault codes.
Signs You Need a Replacement
- No response from the furnace on a call for heat
- Flashing diagnostic LED fault codes pointing to the control
- Blower or inducer motor that won't start or won't shut off
- Random lockouts or intermittent operation with no other failed component
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