What are the specs for this Control Board?

The correct replacement for ICP model RGS120LEAB0AAA — OEM 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 RGS120LEAB0AAA — OEM Kit 1183618 | Ships Today.

ICP

ICP Integrated Furnace Control Board for RGS120LEAB0AAA — OEM Kit 1183618 | Ships Today

Name: ICP Integrated Furnace Control Board for RGS120LEAB0AAA — OEM Kit 1183618 | Ships Today
Brand: ICP
SKU: 1183618
Price: 245.70 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This is the OEM integrated furnace control board kit (part number 1183618) for the ICP / Heil / Tempstar RGS120LEAB0AAA gas furnace. The control board is the brain of the furnace — it sequences the ignition cycle, monitors the flame sensor and pressure switches, controls the inducer and blower motors, and manages the 24V thermostat call. A failed board is one of the most common causes of a furnace that will not start, short-cycles, or locks out on safety. This kit ships with the board and the mounting hardware needed for a direct OEM replacement, preserving the factory ignition logic and safety timings.

Specifications

Spec	Value
Part Number	1183618
Type	Integrated Furnace Control Board (Kit)
Brand	ICP / Heil / Tempstar
Control Voltage	24V
Function	Ignition sequencing, blower/inducer control, safety monitoring
Fit	OEM Replacement

Compatibility

Designed as a direct replacement for the ICP / Heil / Tempstar / Comfortmaker RGS120LEAB0AAA furnace and other models that originally shipped with the 1183618 control board kit. Always match the part number printed on your existing board before ordering.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
Access — Remove the furnace control/blower access panel.
Document — Photograph every wire and connector location on the existing board before disconnecting.
Remove — Unplug the low-voltage and line-voltage harnesses, release the board standoffs/screws, and lift out the old board.
Install — Mount the new board on the same standoffs and reconnect each harness exactly per your photos.
Test — Restore power, initiate a heat call, and confirm a full ignition cycle with no fault codes on the diagnostic LED.

Signs You Need a Replacement

Furnace will not ignite or fails to respond to a thermostat call
Repeated lockouts or a flashing diagnostic fault LED
Blower or inducer motor will not start or runs continuously
Visible scorching, burnt traces, or corrosion on the board

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 Integrated Furnace Control B...

$245.70

Frequently Asked Questions

Does this Control Board fit my ICP RGS120LEAB0AAA — OEM Kit 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS120LEAB0AAA — OEM 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 RGS120LEAB0AAA — OEM 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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