ICP Furnace Control Board for RGS243HDEA0AAAA — Integrated Ignition Control Kit | Ships Today
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Overview
This is the OEM integrated furnace control board kit (OEM part #1183618) for the ICP / Tempstar / Heil RGS243HDEA0AAAA gas furnace. The control board is the brain of the furnace — it manages the ignition sequence, sequences the inducer and blower motors, monitors safety limits and the flame signal, and coordinates the gas valve and igniter. When the board fails the furnace may not start at all, may lock out after a few ignition attempts, may short-cycle, or may run the blower continuously. A cracked solder joint, blown onboard fuse, or burned relay contact on the board is one of the most common causes of a no-heat call on these units. This kit ships as a complete OEM replacement so you restore factory ignition logic and safety timings exactly.
Specifications
| Spec | Value |
|---|---|
| OEM Part Number | 1183618 |
| Description | Kit, Control Board |
| Type | Integrated Furnace Ignition Control |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Application | Gas Furnace |
| Fit | OEM Direct Replacement |
Compatibility
Designed as a direct OEM fit for the ICP Tempstar Heil RGS243HDEA0AAAA gas furnace. Because ICP builds under multiple brand labels, this same board is used across matching Tempstar, Heil, Comfortmaker, and other ICP-family furnaces sharing OEM #1183618. Always confirm the part number printed on your existing board before ordering.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage at the board with a multimeter before touching any terminals.
- Access — Remove the furnace blower-compartment service panel to expose the control board.
- Document — Photograph every wire and connector position on the old board before disconnecting anything.
- Remove — Unplug the molex connectors and individual leads, remove the mounting screws/standoffs, and lift out the failed board.
- Install — Mount the new board on the same standoffs and reconnect every wire and connector exactly per your photos.
- Test — Restore power, initiate a heat call, and confirm the full ignition sequence: inducer, igniter glow, gas valve, flame proof, and blower-on.
Signs You Need a Replacement
- Furnace will not start or has no response to a heat call.
- Repeated ignition lockout or blinking fault/diagnostic LED on the board.
- Blower runs continuously or won't start even though the burners light.
- Visible burn marks, swollen relays, or a blown fuse on the board.
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. 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