What are the specs for this Control Board?

The correct replacement for ICP model RGS300HEAA0AAAA — 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 RGS300HEAA0AAAA — Ships Today.

ICP

ICP Integrated Furnace Control Board for RGS300HEAA0AAAA — Ships Today

Name: ICP Integrated Furnace Control Board for RGS300HEAA0AAAA — Ships Today
Brand: ICP
SKU: 1183618
Price: 188.50 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This OEM Integrated Furnace Control (IFC) board, ICP part number 1183618, is the central electronic brain of your RGS300HEAA0AAAA gas furnace. It manages the complete heating sequence — inducer start-up, hot surface igniter timing, gas valve actuation, blower delays, and continuous flame and pressure-switch safety monitoring. Operating on a 24V control circuit, the board interprets thermostat calls and orchestrates every component in the correct order. When a control board fails, the furnace may not respond to the thermostat at all, may lock out after a few ignition attempts, run the blower constantly, or short-cycle without producing steady heat. A flashing diagnostic LED on the board, no inducer operation, or a furnace that powers up but never ignites are classic signs the control has failed.

Specifications

Spec	Value
Part Number	1183618
Type	Integrated Furnace Control Board (Kit)
Brand	ICP / Tempstar / Heil
Control Voltage	24V
Function	Ignition, gas valve, blower & inducer control with safety lockout
Fitment	OEM direct replacement

Compatibility

Designed as a direct OEM replacement for the ICP/Tempstar/Heil RGS300HEAA0AAAA gas furnace and the broader RGS300 family. ICP manufactures under several brand names (Tempstar, Heil, Comfortmaker, Arcoaire), so this board services equivalent units across those lines. Always confirm the part number printed on your existing board matches 1183618 before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter before touching any wiring.
Access — Remove the furnace service/blower panel to expose the control board.
Document — Photograph every wire and connector position before disconnecting anything.
Remove — Unplug the molded harness connectors, release the board mounting standoffs or screws, and lift out the old control.
Install — Seat the new board on the standoffs, reconnect each harness per your photo, and ensure connectors click fully home.
Test — Restore power, send a heat call from the thermostat, and confirm the full ignition sequence and blower operation while watching the diagnostic LED.

Signs You Need a Replacement

Furnace does not respond to thermostat heat calls.
Ignition lockout or diagnostic LED flashing a fault code.
Blower runs continuously or never starts.
Inducer or gas valve fails to energize in sequence.

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 Integrated Furnace Control B...

$188.50

Frequently Asked Questions

Does this Control Board fit my ICP RGS300HEAA0AAAA — Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS300HEAA0AAAA — 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 RGS300HEAA0AAAA — 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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