What are the specs for this Control Board?

The correct replacement for ICP model RGS303HREA0AAAA — 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 RGS303HREA0AAAA — Kit 1183618 | Ships Today.

ICP

ICP Furnace Control Board for RGS303HREA0AAAA — Kit 1183618 | Ships Today

Name: ICP Furnace Control Board for RGS303HREA0AAAA — Kit 1183618 | Ships Today
Brand: ICP
SKU: 1183618
Price: 246.94 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This OEM control board kit (part number 1183618) is the integrated furnace control (IFC) for the ICP / Tempstar / Heil RGS303HREA0AAAA gas furnace. The board is the brain of the furnace: it sequences the inducer, igniter, gas valve, and blower, monitors the pressure switch and flame sensor, and runs the safety lockout logic. When it fails, the entire heat cycle stops. Common symptoms include a furnace that is completely dead with no LED, an LED flashing a fault code that does not clear, the inducer or blower not energizing, or intermittent operation that worsens with heat. Because the board is shipped as a complete kit, it includes the mounting hardware and connectors needed for a clean swap. Replacing a failed IFC restores full automatic operation and the built-in safety interlocks.

Specifications

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

Compatibility

Designed for the ICP family RGS303HREA0AAAA furnace and the matching Tempstar, Heil, Comfortmaker, and Arcoaire models built on the same control platform. Confirm the OEM kit number 1183618 against your unit's wiring diagram before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
Access — Remove the blower-compartment service panel to expose the control board.
Document — Photograph every wire and connector on the old board before disconnecting anything.
Remove — Label and unplug each harness, remove the mounting screws, and lift out the old board.
Install — Mount the new board from the kit and reconnect every harness exactly per your photo.
Test — Restore power, run a full heat cycle, and confirm the status LED reads normal with no fault codes.

Signs You Need a Replacement

Furnace is completely dead with no control-board LED.
LED flashes a hard fault code that will not clear after reset.
Inducer, igniter, or blower fails to energize in sequence.
Intermittent shutdowns or scorched/corroded traces 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...

$246.94

Frequently Asked Questions

Does this Control Board fit my ICP RGS303HREA0AAAA — Kit 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS303HREA0AAAA — 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 RGS303HREA0AAAA — 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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