What are the specs for this Control Board?

The correct replacement for ICP model RGS303SEFA0AAAA — OEM Furnace Control Board | 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 RGS303SEFA0AAAA — OEM Furnace Control Board | Ships Today.

ICP

ICP Control Board Kit for RGS303SEFA0AAAA — OEM Furnace Control Board | Ships Today

Name: ICP Control Board Kit for RGS303SEFA0AAAA — OEM Furnace Control Board | Ships Today
Brand: ICP
SKU: 1183618
Price: 246.94 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This genuine OEM control board kit, part number 1183618, is the integrated furnace control (IFC) that manages your ICP/Tempstar/Heil furnace's entire heating sequence. The board orchestrates ignition timing, blower and inducer operation, safety lockouts, and communication with the thermostat. It monitors the pressure switch, limit switches, and flame sensor, and runs the ignition sequence in the correct order on every heat call. When a control board fails, the furnace may be completely dead, fail to ignite, run the blower continuously, or flash diagnostic fault codes on the board LED. This kit includes the board for a complete, direct replacement that restores full furnace operation.

Specifications

Spec	Value
Part Number	1183618
Type	Integrated Furnace Control Board Kit
Brand	ICP / Tempstar / Heil / Comfortmaker
Application	Gas Furnace Control
Fitment	OEM Replacement Kit

Compatibility

Direct OEM fit for ICP-family model RGS303SEFA0AAAA and other Tempstar, Heil, and Comfortmaker furnaces specifying control board kit 1183618. Confirm the board part number printed on your existing control before ordering.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
Access — Remove the furnace service panel to reach the control board.
Document — Photograph every wire harness and terminal on the board before disconnecting.
Remove — Unplug the harnesses, release the board standoffs or screws, and lift out the old board.
Install — Mount the new board and reconnect each harness exactly per your photo and the wiring diagram.
Test — Restore power and run a full heat cycle, confirming proper ignition, blower, and inducer operation with no fault codes.

Signs You Need a Replacement

Furnace is completely unresponsive with no LED activity.
Diagnostic fault-code flashes indicating a board failure.
No ignition sequence despite a valid heat call.
Blower or inducer runs continuously or erratically.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns on unused parts. 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 Control Board Kit for RGS303...

$246.94

Frequently Asked Questions

Does this Control Board fit my ICP RGS303SEFA0AAAA — OEM Furnace Control Board | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RGS303SEFA0AAAA — OEM Furnace Control Board | 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 RGS303SEFA0AAAA — OEM Furnace Control Board | 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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