What are the specs for this Control Board?

The correct replacement for ICP model RGS303SFEA0AAAA — 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 RGS303SFEA0AAAA — OEM 1183618 | Ships Today.

ICP

ICP Furnace Control Board Kit for RGS303SFEA0AAAA — OEM 1183618 | Ships Today

Name: ICP Furnace Control Board Kit for RGS303SFEA0AAAA — 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 a genuine OEM control board kit, part number 1183618, for the ICP / Tempstar / Heil RGS303SFEA0AAAA gas furnace. The integrated furnace control board is the brain of the system — it manages the ignition sequence, monitors safety limits and flame, sequences the inducer and blower, and drives the gas valve based on thermostat demand. When the board fails, symptoms range from a completely dead furnace to erratic operation, blower problems, ignition lockouts, and fault-code flashes on the diagnostic LED. This kit supplies the factory-matched replacement board with the correct firmware and connectors for a clean, plug-in repair.

Specifications

Spec	Value
OEM Part Number	1183618
Type	Integrated Furnace Control Board Kit
Brand	ICP / Tempstar / Heil
Application	Gas Furnace Ignition & Sequencing Control
Fitment	OEM Direct Replacement

Compatibility

Factory-specified control board for the ICP Tempstar Heil RGS303SFEA0AAAA and used across related ICP-family furnace platforms. Confirm your existing board is part number 1183618 and that the connector layout matches before ordering.

Installation Guide

Safety First — Disconnect power at the switch and breaker, then verify zero voltage with a multimeter before touching the board.
Access — Remove the furnace control/blower compartment service panel.
Document — Photograph every plug and wire connection on the old board before disconnecting — connector position matters.
Remove — Unplug each harness, release the board standoffs or screws, and lift out the old board.
Install — Mount the new board, then reconnect every harness to its matching terminal exactly per your photo.
Test — Restore power, run a full heat cycle, and confirm the diagnostic LED shows normal operation with no fault codes.

Signs You Need a Replacement

Furnace is completely unresponsive with no diagnostic LED activity.
Persistent fault-code flashes pointing to the control board.
Blower or inducer runs continuously or fails to sequence correctly.
Intermittent ignition lockouts after other components test good.

Shipping & Returns

Ships same day on orders placed 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 RGS303SFEA0AAAA — OEM 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS303SFEA0AAAA — 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 RGS303SFEA0AAAA — 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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