What are the specs for this Control Board?

The correct replacement for ICP model RGS120SRBB0AAA — 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 RGS120SRBB0AAA — OEM Kit 1183618 | Ships Today.

ICP

ICP Furnace Control Board for RGS120SRBB0AAA — OEM Kit 1183618 | Ships Today

Name: ICP Furnace Control Board for RGS120SRBB0AAA — OEM 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 integrated furnace control board kit is the brain of the ICP/Tempstar/Heil RGS120SRBB0AAA gas furnace. It manages the entire heating sequence — inducer start, pressure-switch proving, igniter warm-up, gas valve timing, flame sensing, and blower on/off delays — and provides safety lockout if any step fails. A failed board is a common cause of intermittent no-heat, short cycling, blower running constantly, or the furnace ignoring the thermostat entirely. This listing ships as OEM kit part number 1183618 (KIT CONTROL BOARD), supplied as a complete direct-replacement assembly.

Specifications

Spec	Value
Part Number	1183618
Type	Integrated furnace ignition control board kit
Brand	ICP / Tempstar / Heil
Fits Model	RGS120SRBB0AAA
Voltage	120V primary / 24V control
Fitment	OEM direct replacement kit

Compatibility

Designed for the ICP Tempstar Heil RGS120SRBB0AAA single-stage gas furnace and other ICP-family RGS-series furnaces using this control platform. Match the printed board number against 1183618 to confirm fit before installing.

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 on the existing board before disconnecting anything.
Remove — Unplug each harness, release the mounting screws or standoffs, and lift out the old board.
Install — Mount the new board, then reconnect every harness exactly per your photo, confirming each connector is fully seated.
Test — Restore power, run a full heat cycle, and confirm proper ignition sequence and blower timing. Check the board's diagnostic LED for fault codes.

Signs You Need a Replacement

Furnace does not respond to thermostat calls for heat.
Intermittent no-heat or random short cycling with no other failed component.
Blower runs continuously or fails to start.
Diagnostic LED is dark or flashes a hard-fault / internal-error code.

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 RGS120SRBB0AAA — OEM Kit 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS120SRBB0AAA — 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 RGS120SRBB0AAA — 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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