What are the specs for this Control Board?

The correct replacement for ICP model RGS090STCB0AAA — Part 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 RGS090STCB0AAA — Part 1183618 | Ships Today.

ICP

ICP Integrated Furnace Control Board for RGS090STCB0AAA — Part 1183618 | Ships Today

Name: ICP Integrated Furnace Control Board for RGS090STCB0AAA — Part 1183618 | Ships Today
Brand: ICP
SKU: 1183618
Price: 193.70 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This is the genuine OEM integrated furnace control board (kit) for the ICP / Tempstar / Heil RGS090STCB0AAA 90,000 BTU gas furnace, supplied as factory part number 1183618. The control board is the electronic brain of the furnace: it sequences the ignition cycle, monitors the flame sensor and pressure switch, energizes the inducer and gas valve, controls the blower fan timing, and manages safety lockouts. When this board fails the furnace may stop responding to the thermostat entirely, flash a fault/error code at the diagnostic LED, short-cycle, or fail to ignite. The 1183618 kit ships with the board and mounting hardware so you can drop in a complete replacement.

Specifications

Spec	Value
Part Number	1183618 (KIT CONTROL BOARD)
Type	Integrated furnace control board
Brand	ICP / Tempstar / Heil
Fits Model	RGS090STCB0AAA
Line Voltage	120V
Control Voltage	24V
Fitment	OEM replacement

Compatibility

Designed as the factory-correct control board for the ICP/Tempstar/Heil RGS090STCB0AAA gas furnace. Always confirm your existing board's part number and connector layout against 1183618 before ordering. The board is shared across several RGS-series 90K BTU furnace builds, but matching the OEM number guarantees connector and firmware compatibility.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
Access — Remove the furnace blower-compartment service panel.
Document — Photograph every wire harness and connector on the existing board before disconnecting anything.
Remove — Unplug each labeled connector, release the board standoffs/screws, and lift out the failed board.
Install — Mount the new 1183618 board, reconnect each harness exactly per your photos, and confirm the ground.
Test — Restore power, call for heat, and watch the diagnostic LED through a full ignition and blower cycle.

Signs You Need a Replacement

Furnace completely unresponsive to thermostat calls for heat.
Diagnostic LED flashing a hard-lockout or board fault code.
Inducer, igniter, or blower failing to energize in the correct sequence.
Visible scorch marks, corroded relays, or burnt traces on the board.

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...

$193.70

Frequently Asked Questions

Does this Control Board fit my ICP RGS090STCB0AAA — Part 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS090STCB0AAA — Part 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 RGS090STCB0AAA — Part 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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