What are the specs for this Control Board?

The correct replacement for ICP model RGS120STCB0AAA — 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 RGS120STCB0AAA — OEM 1183618 | Ships Today.

ICP

ICP Furnace Control Board Kit for RGS120STCB0AAA — OEM 1183618 | Ships Today

Name: ICP Furnace Control Board Kit for RGS120STCB0AAA — OEM 1183618 | Ships Today
Brand: ICP
SKU: 1183618
Price: 220.94 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 RGS120STCB0AAA gas furnace. The board is the brain of the furnace: it manages the ignition sequence, sequences the inducer and blower motors, monitors the flame sensor and limit/pressure switches, and runs the self-diagnostic LED fault codes. When a control board fails — from voltage surges, cracked solder joints, failed relays, or burned traces — the furnace may be completely dead, get stuck on the blower, fail to ignite, or short-cycle. Supplied as a complete kit, this OEM board restores correct, safe operation.

Specifications

Spec	Value
Part Number	1183618
Type	Integrated Furnace Control Board Kit
Brand	ICP / Tempstar / Heil
Function	Ignition, blower/inducer sequencing, safety monitoring, diagnostics
Fits Model	RGS120STCB0AAA
Supplied As	Complete kit
Fitment	OEM exact replacement

Compatibility

Built for the RGS120STCB0AAA and shared ICP-family chassis sold under ICP, Tempstar, Heil, and Comfortmaker that specify this control board kit. Match your existing board part number before installing.

Installation Guide

Safety First — Disconnect power and shut off gas. Verify zero voltage with a multimeter.
Access — Remove the furnace control/service panel.
Document — Photograph every connector and wire on the existing board before unplugging.
Remove — Unplug all harnesses, remove the mounting screws/standoffs, and lift out the old board.
Install — Mount the new board and reconnect each harness to the identical terminal per your photo.
Test — Restore power and gas, run a full heat cycle, and confirm normal sequencing with no error codes on the diagnostic LED.

Signs You Need a Replacement

Furnace completely dead with no diagnostic LED
No ignition or blower despite a call for heat
Blower runs constantly or short-cycles
Erratic or stuck diagnostic fault codes

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...

$220.94

Frequently Asked Questions

Does this Control Board fit my ICP RGS120STCB0AAA — OEM 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS120STCB0AAA — 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 RGS120STCB0AAA — 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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