What are the specs for this Control Board?

The correct replacement for ICP model RGS120LTBB0AAA — OEM Replacement | 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 RGS120LTBB0AAA — OEM Replacement | Ships Today.

ICP

ICP Furnace Control Board Kit for RGS120LTBB0AAA — OEM Replacement | Ships Today

Name: ICP Furnace Control Board Kit for RGS120LTBB0AAA — OEM Replacement | 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 1183618) is the integrated furnace control (IFC) for the ICP RGS120LTBB0AAA gas furnace. The board is the brain of the furnace — it manages the ignition sequence, monitors safety circuits (limit, pressure switch, flame sense), and times the inducer and blower motors. When it fails you may see no ignition, no blower, error-code flashes on the diagnostic LED, or erratic short-cycling. Supplied as a complete kit for a direct OEM replacement that restores correct, safe sequencing.

Specifications

Spec	Value
Part Number	1183618
Type	Integrated Furnace Control Board Kit
Brand	ICP / Heil / Tempstar
Functions	Ignition, Blower & Inducer Timing, Safety Monitoring
Diagnostics	Onboard LED Fault Codes
Fitment	OEM

Compatibility

Designed for the ICP / Heil / Tempstar / Comfortmaker RGS120LTBB0AAA gas furnace and related models using this control board kit. Match the board's part number, connector layout, and terminal arrangement to your original before ordering.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
Access — Remove the control/blower compartment service panel.
Document — Photograph every harness and the wiring diagram before disconnecting anything.
Remove — Unplug all connectors, note the low-voltage terminal wiring, and unscrew the old board.
Install — Mount the new board, transfer all plugs and terminal wires exactly per your photo, and confirm the ground.
Test — Restore power and run a full heat cycle; confirm ignition, blower, and a normal LED status code.

Signs You Need a Replacement

No ignition or no blower on a heat call
Fault/error code flashing on the diagnostic LED
Furnace short-cycles or behaves erratically
Visible burn marks, corrosion, or a blown fuse on the board

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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 RGS120LTBB0AAA — OEM Replacement | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS120LTBB0AAA — OEM Replacement | 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 RGS120LTBB0AAA — OEM Replacement | 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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