ICP Furnace Control Board for RGS243HEFA0AAAA — OEM Kit | Ships Today
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Overview
This OEM control board kit (part 1183618) is the brain of your ICP RGS243HEFA0AAAA unit. The integrated furnace control manages the entire heating and cooling sequence — it reads the thermostat, runs the inducer and ignition sequence, sequences the gas valve and blower, monitors limit and pressure safeties, and reports fault codes through its diagnostic LED. When the board fails the symptoms are wide-ranging: no response on a call, the blower or inducer running constantly, ignition that never sequences, or a flashing error code that points back to the board itself. Power surges, blown onboard relays, and burned traces are common failure causes. The kit ships with the mounting hardware and instructions needed for a clean swap.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Function | Ignition, blower, inducer & safety sequencing |
| Diagnostics | Onboard fault-code LED |
| Fit | OEM Replacement Kit |
Compatibility
OEM fit for the ICP / Tempstar / Heil RGS243HEFA0AAAA. Compare the board's connector layout and part number against your existing control before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter.
- Access — Remove the control/blower compartment panel to expose the board.
- Document — Photograph every harness, plug, and terminal before disconnecting — wiring orientation is critical.
- Remove — Unplug each connector, release the board standoffs/screws, and lift out the failed board.
- Install — Mount the new board, transfer any jumpers/links, and reconnect every harness per your photo.
- Test — Restore power and run a full heat and cool cycle, watching the diagnostic LED for normal operation.
Signs You Need a Replacement
- No response from the furnace on a call for heat despite good power and thermostat signal.
- Blower or inducer motor runs continuously or won't start.
- Diagnostic LED flashes a board/control fault code.
- Visible burned relays, scorched traces, or a burnt-electronics smell.
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