What are the specs for this Control Board?

The correct replacement for ICP model RGS183LDAA0AGAA — 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 RGS183LDAA0AGAA — OEM Kit 1183618 | Ships Today.

ICP

ICP Furnace Control Board for RGS183LDAA0AGAA — OEM Kit 1183618 | Ships Today

Name: ICP Furnace Control Board for RGS183LDAA0AGAA — 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 is the genuine OEM integrated furnace control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS183LDAA0AGAA gas furnace. The control board is the brain of the furnace — it sequences the ignition cycle, monitors safety limits and flame, controls the inducer and blower motors, and manages the 24V control circuit to the thermostat. A failed board is one of the most common reasons a furnace will not start, short cycles, or locks out on a fault code. Symptoms of a failing control board include no response to a thermostat call, the blower or inducer running continuously, intermittent no-heat conditions, blown low-voltage fuses, or LED diagnostic flash codes indicating a board fault.

Specifications

Spec	Value
Part Number	1183618
Type	Integrated Furnace Control Board Kit
Brand	ICP / Tempstar / Heil
Control Voltage	24V
Fits Model	RGS183LDAA0AGAA
Fitment	OEM Direct Replacement

Compatibility

Engineered as a direct OEM replacement for the ICP-built RGS183LDAA0AGAA gas furnace and equivalent Tempstar, Heil, Comfortmaker, and Carrier-family units that originally shipped with control board 1183618. Always confirm 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 before touching wiring.
Access — Remove the furnace front service panel to expose the control board.
Document — Photograph every wire and connector position before disconnecting anything.
Remove — Unplug the wiring harnesses, release the board mounting standoffs/screws, and lift out the old control board.
Install — Seat the new board on the standoffs, fasten it, and reconnect every harness exactly per your photos.
Test — Restore power, initiate a heat call, and confirm a full ignition sequence and proper blower operation with no fault codes.

Signs You Need a Replacement

Furnace does not respond to a thermostat heat call
Blower or inducer motor runs continuously or won't start
Repeated diagnostic flash-code lockouts
Visible burn marks, corrosion, or blown 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 Furnace Control Board for RG...

$246.94

Frequently Asked Questions

Does this Control Board fit my ICP RGS183LDAA0AGAA — OEM Kit 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS183LDAA0AGAA — 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 RGS183LDAA0AGAA — 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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