What are the specs for this Control Board?

The correct replacement for ICP model RGS243SEFA0AAAA — OEM 1183618 | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your ICP equipment which lists the model number RGS243SEFA0AAAA — OEM 1183618 | Ships Today.

ICP

ICP Furnace Control Board Kit for RGS243SEFA0AAAA — OEM 1183618 | Ships Today

Name: ICP Furnace Control Board Kit for RGS243SEFA0AAAA — OEM 1183618 | Ships Today
Brand: ICP
SKU: 1183618
Price: 246.94 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This OEM ICP control board kit (part number 1183618) is the integrated furnace control (IFC) for the ICP / Tempstar / Heil RGS243SEFA0AAAA gas furnace. The board manages the ignition sequence, blower and inducer timing, safety lockouts, and diagnostic fault codes. When it fails, the furnace may be completely dead, ignore thermostat calls, run the blower continuously, or flash error codes. Supplied as a complete OEM kit, it restores correct sequencing and safety logic that generic boards cannot reliably reproduce.

Specifications

Spec	Value
Part Number	1183618
Description	Kit, Control Board (Integrated Furnace Control)
Type	Furnace Control Board
Brand	ICP / Tempstar / Heil
Fit	OEM Factory Replacement Kit
Application	Gas Furnace Ignition & Blower Control

Compatibility

Engineered for the ICP Tempstar Heil RGS243SEFA0AAAA and related furnaces specifying OEM control board kit 1183618. Compare your existing board's part number and connector layout before installing.

Installation Guide

Safety First — Shut off gas, disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
Access — Remove the blower/control compartment service panel.
Document — Photograph every plug and wire harness on the old board before disconnecting.
Remove — Unplug each connector, release the board standoffs, and lift out the failed control.
Install — Mount the new board on the standoffs and reconnect every harness exactly per your photos.
Test — Restore gas and power, run a full heat cycle, and confirm proper ignition, blower timing, and no fault codes.

Signs You Need a Replacement

Furnace completely unresponsive to thermostat
Blower or inducer runs constantly or not at all
Repeated diagnostic fault-code flashes
No ignition sequence despite good igniter and gas

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

ICP Furnace Control Board Kit fo...

$246.94

Frequently Asked Questions

Does this Control Board fit my ICP RGS243SEFA0AAAA — OEM 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS243SEFA0AAAA — OEM 1183618 | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the control board on my ICP RGS243SEFA0AAAA — OEM 1183618 | Ships Today?

Difficulty: Advanced (1–2 hrs)
Step 1: Turn off breaker. Step 2: PHOTOGRAPH all wire connections before touching anything. Step 3: Label each wire with tape. Step 4: Disconnect all wires, remove old board. Step 5: Mount new board, reconnect all wires matching your photo exactly. Step 6: Restore power and test all modes. Exact part number match is critical.

My HVAC system is completely dead. What could be wrong?

Completely dead HVAC (no LED on board) = failed control board or blown fuse. Check board fuse first (3A or 5A, costs $1–$5). If fuse is good and board has power but no LED, board is dead. Always photograph wiring before replacing.

Is this control board compatible with Bryant or Payne too?

Many ICP parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my ICP control board?

OEM essential. Control boards are model-specific with precise firmware and connector layouts. Aftermarket boards rarely match all functions and can cause intermittent failures or safety issues. Always match the exact OEM part number.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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