What are the specs for this Control Board?

The correct replacement for ICP model RGS243SFEA0AAAA — OEM Furnace Control 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 RGS243SFEA0AAAA — OEM Furnace Control Kit 1183618 | Ships Today.

ICP

ICP Control Board for RGS243SFEA0AAAA — OEM Furnace Control Kit 1183618 | Ships Today

Name: ICP Control Board for RGS243SFEA0AAAA — OEM Furnace Control Kit 1183618 | Ships Today
Brand: ICP
SKU: 1183618
Price: 193.70 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This OEM integrated furnace control board kit (part #1183618) is the central electronic brain of your ICP / Tempstar / Heil RGS243SFEA0AAAA gas furnace. It manages the ignition sequence, blower and inducer timing, safety lockouts, and communication between the thermostat, igniter, gas valve, and pressure switches. When this board fails, the furnace can no longer safely sequence a heat call. Common failure symptoms include no ignition, the furnace failing to start, a blower that runs constantly or not at all, error/flash codes on the diagnostic LED, or intermittent no-heat conditions during cold weather. The board operates on a 24V control circuit and includes onboard diagnostics to speed troubleshooting.

Specifications

Spec	Value
Part Number	1183618
Type	Integrated Furnace Control Board (Kit)
Brand	ICP / Tempstar / Heil
Control Voltage	24V
Fitment	OEM Direct Replacement
Application	Gas Furnace

Compatibility

Engineered as a direct OEM replacement for the ICP / Tempstar / Heil RGS243SFEA0AAAA gas furnace and compatible models across the Comfortmaker and Heil family that share this control platform. Always verify 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.
Access — Remove the furnace blower/control compartment door.
Document — Photograph every wire and connector position on the old board before disconnecting.
Remove — Unplug the molded harness connectors, disconnect the spade terminals, and unscrew the failed board from its standoffs.
Install — Mount the new board, then reconnect each harness and terminal exactly per your photo.
Test — Restore power, run a heat call, and confirm proper ignition, blower, and inducer sequencing on the diagnostic LED.

Signs You Need a Replacement

Furnace will not ignite or fails to respond to a heat call
Diagnostic LED shows a fault/lockout flash code
Blower or inducer motor runs continuously or never starts
Intermittent no-heat or random shutdowns

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 Control Board for RGS243SFEA...

$193.70

Frequently Asked Questions

Does this Control Board fit my ICP RGS243SFEA0AAAA — OEM Furnace Control Kit 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS243SFEA0AAAA — OEM Furnace Control 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 RGS243SFEA0AAAA — OEM Furnace Control 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.

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