What are the specs for this Control Board?

The correct replacement for ICP model RGS243LSEA0AAAA — 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 RGS243LSEA0AAAA — OEM 1183618 | Ships Today.

ICP

ICP Furnace Control Board Kit for RGS243LSEA0AAAA — OEM 1183618 | Ships Today

Name: ICP Furnace Control Board Kit for RGS243LSEA0AAAA — OEM 1183618 | Ships Today
Brand: ICP
SKU: 1183618
Price: 246.94 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This is the genuine OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS243LSEA0AAAA gas furnace. The integrated furnace control board is the brain of the system — it manages the entire heating sequence, including the inducer motor, hot surface igniter, gas valve, blower timing, flame sensing, and safety lockouts. It monitors limit and pressure switches and shuts the furnace down if a fault is detected. When the board fails from power surges, corrosion, failed relays, or burnt traces, the furnace may not respond to the thermostat, may short-cycle, or may lock out entirely. This kit restores full, code-compliant control.

Specifications

Spec	Value
Part Number	1183618 (Kit Control Board)
Type	Integrated Furnace Control Board
Brand	ICP / Tempstar / Heil
Function	Ignition, blower, inducer & safety control
Application	Gas furnace
Fit	Genuine OEM Kit

Compatibility

Factory replacement kit for the ICP/Tempstar/Heil RGS243LSEA0AAAA furnace and related ICP-family models that use this control board. Compare the connector layout and part number on your existing board before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
Access — Remove the furnace control/blower compartment panel.
Document — Photograph every wire harness and connector position on the old board.
Remove — Unplug each connector, remove the mounting screws/standoffs, and lift out the failed board.
Install — Mount the new board and reconnect every harness to the matching plug per your photos.
Test — Restore power, call for heat, and verify the full ignition and blower sequence runs without fault codes.

Signs You Need a Replacement

Furnace does not respond to the thermostat
No power to igniter, inducer, gas valve, or blower
Repeated lockouts or erratic LED fault codes
Visible burnt traces, melted connectors, or corroded relays

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 RGS243LSEA0AAAA — OEM 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS243LSEA0AAAA — 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 RGS243LSEA0AAAA — 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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