What are the specs for this Control Board?

The correct replacement for ICP model RGX048KRXA0AAA — 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 RGX048KRXA0AAA — OEM Kit 1183618 | Ships Today.

ICP

ICP Furnace Control Board for RGX048KRXA0AAA — OEM Kit 1183618 | Ships Today

Name: ICP Furnace Control Board for RGX048KRXA0AAA — 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 / Heil / Tempstar RGX048KRXA0AAA gas furnace. The control board is the brain of the furnace — it sequences ignition, monitors safety limits and flame, controls the inducer and blower motors, and manages the 24V thermostat signals. It operates on a 120V line input and a 24V control circuit. When this board fails, the furnace will not run reliably or will not run at all, so a genuine replacement restores correct, code-compliant operation.

Specifications

Spec	Value
OEM Part Number	1183618 (KIT CONTROL BOARD)
Type	Integrated Furnace Control Board Kit
Brand	ICP / Heil / Tempstar / Comfortmaker
Line Voltage	120V
Control Voltage	24V
Fits Model	RGX048KRXA0AAA
Fitment	OEM Exact Replacement

Compatibility

Designed as a direct OEM replacement for the ICP-family gas furnace RGX048KRXA0AAA and is sold by Heil, Tempstar, and Comfortmaker under the same International Comfort Products platform. Always confirm the part number printed on your existing board matches 1183618 before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter before touching any wiring.
Access — Remove the furnace blower-compartment service panel to expose the control board.
Document — Photograph every wire and connector position on the old board before disconnecting anything.
Remove — Unplug the wiring harnesses and molex connectors, remove the board mounting screws/standoffs, and lift out the failed board.
Install — Mount the new board on the same standoffs and reconnect every harness exactly as photographed.
Test — Restore power, run a heat call from the thermostat, and confirm a full ignition and blower sequence with no fault LED codes.

Signs You Need a Replacement

Furnace is completely dead with no LED status light on the board.
Inducer or blower motor will not start or runs erratically.
Repeated lockouts or error flash codes that persist after checking igniter and flame sensor.
Visible burn marks, scorched traces, or a blown onboard fuse.

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 RGX048KRXA0AAA — OEM Kit 1183618 | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGX048KRXA0AAA — 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 RGX048KRXA0AAA — 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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