What are the specs for this Control Board?

The correct replacement for ICP model RGS243HDAA0AAAA – OEM Kit 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 RGS243HDAA0AAAA – OEM Kit 1183618 | Ships Today.

ICP

ICP Furnace Control Board for RGS243HDAA0AAAA – OEM Kit 1183618 | Ships Today

Name: ICP Furnace Control Board for RGS243HDAA0AAAA – OEM Kit 1183618 | Ships Today
Brand: ICP
SKU: 1183618
Price: 219.70 USD
Availability: InStock

SKU: 1183618 Brand: ICP

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This OEM control board kit (part number 1183618) is the integrated furnace control (IFC) for the ICP / Tempstar / Heil RGS243HDAA0AAAA gas furnace. The control board is the brain of the furnace, sequencing the inducer motor, igniter, gas valve, and blower while continuously monitoring safety limits, flame sense, and pressure switches. When this board fails, the furnace will not light, will short-cycle, or will lock out entirely. Symptoms of a failing board include no response to a thermostat call for heat, a furnace that runs the blower but never ignites, erratic LED diagnostic flash codes, or burnt and discolored relays on the board surface. This is a complete kit supplied to factory specification for a direct, reliable replacement.

Specifications

Spec	Value
Part Number	1183618
Type	Integrated Furnace Control Board Kit
Brand	ICP / Tempstar / Heil
Control Voltage	24V
Fits Model	RGS243HDAA0AAAA
Fit Type	OEM Replacement

Compatibility

Designed specifically for the ICP / Tempstar / Heil RGS243HDAA0AAAA gas furnace. This kit also commonly services related RGS-series furnaces that originally shipped with the 1183618 control. Always confirm your existing board part number before ordering.

Installation Guide

Safety First – Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter before touching the board.
Access – Remove the furnace blower-compartment service panel.
Document – Photograph every wire and connector position on the existing board before disconnecting anything.
Remove – Unplug the molex harnesses and spade terminals, remove the mounting screws, and lift out the old board.
Install – Mount the new board, then reconnect each harness and terminal exactly per your photo.
Test – Restore power, initiate a call for heat, and confirm the full ignition sequence and blower operation.

Signs You Need a Replacement

Furnace does not respond to a thermostat heat call.
Inducer or blower runs but the igniter and gas valve never activate.
Repeated lockouts or erratic diagnostic LED flash codes.
Visible burn marks, scorching, or melted relays on the board.

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 for RG...

$219.70

Frequently Asked Questions

Does this Control Board fit my ICP RGS243HDAA0AAAA – OEM Kit 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS243HDAA0AAAA – OEM Kit 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 RGS243HDAA0AAAA – OEM Kit 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.

Menu