ICP Furnace Control Board Kit for RGS243SSFA0AAAA — OEM | Ships Today

Overview

This OEM control board kit (Part No. 1183618) is the brain of your ICP RGS243SSFA0AAAA gas furnace. It manages the entire heating sequence — sequencing the inducer, igniter, gas valve, and blower while continuously monitoring safety switches and flame signal. The kit includes the replacement board and the hardware needed for a clean swap. Control boards fail from heat stress, power surges, corrosion, and aged components. A failed board can cause no-heat, no-blower, erratic short-cycling, blown low-voltage fuses, or a board that won't respond to a thermostat call at all. Many boards also store fault codes via an LED that help confirm the diagnosis.

Specifications

Compatibility

Direct OEM replacement kit for the ICP / Tempstar / Heil RGS243SSFA0AAAA gas furnace. Verify the original part number 1183618 against your existing board before installing, as furnace controls are model-specific.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter.
2. Access — Remove the blower/control compartment panel.
3. Document — Photograph every connector and wire position before unplugging — this is critical for a multi-connector board.
4. Remove — Unplug all harness connectors, remove the mounting screws/standoffs, and lift out the old board.
5. Install — Mount the new board from the kit and reconnect every harness exactly per your photos.
6. Test — Restore power and run a full heat cycle, watching the diagnostic LED for normal operation.

Signs You Need a Replacement

• No response to a thermostat heat call
• Blower or igniter won't energize in sequence
• Repeated short-cycling or blown low-voltage fuse
• Error/fault LED codes or visible burn marks on the board

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.