ICP Control Board Kit for RGS300SDFA0AAAA — OEM Ignition | Ships Today
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Overview
This genuine OEM control board kit (part #1183618) for the ICP/Tempstar/Heil RGS300SDFA0AAAA is the furnace's integrated ignition control — the brain that manages the entire heating sequence. It sequences the inducer, igniter, gas valve, and blower; monitors safety inputs such as limit switches, pressure switches, and the flame signal; and protects the system through timed trials for ignition and safe lockouts. When the board fails, the furnace may not respond to the thermostat, may lock out repeatedly, may fail to energize the igniter or blower, or may run erratically. Supplied as a kit for a complete, correct replacement, this OEM board restores reliable, code-compliant operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Function | Ignition & Sequence Control |
| Fit | OEM |
Compatibility
Engineered for the ICP RGS300SDFA0AAAA and shared across the Tempstar, Heil, Comfortmaker, and International Comfort Products furnace families that use this control. Confirm part number 1183618 against your existing board before ordering, and verify any kit revision instructions included.
Installation Guide
- Safety First — Disconnect power at the switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the furnace service panel to reach the control board.
- Document — Photograph every wire harness and terminal connection before disconnecting.
- Remove — Unplug the harnesses, transfer connections, and unfasten the old board from its standoffs.
- Install — Mount the new board on the standoffs and reconnect each harness to the matching terminal per your photo and the kit instructions.
- Test — Restore power, call for heat, and confirm the full sequence: inducer, ignition, flame proof, and blower.
Signs You Need a Replacement
- Furnace does not respond to the thermostat
- Repeated ignition lockouts or error codes on the board LED
- Igniter, inducer, or blower fails to energize in sequence
- Erratic operation or no heat despite good upstream components
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