ICP Furnace Control Board Kit for RGS240LSFA0AAAA — OEM | Ships Today

Overview

This OEM control board kit (ICP part number 1183618) is the integrated furnace control that manages the entire heating sequence on your ICP / Tempstar / Heil RGS240LSFA0AAAA. The board coordinates ignition timing, inducer and blower operation, safety interlocks, and self-diagnostic fault codes. When the board fails, the furnace may not respond to the thermostat, may short-cycle, may run the blower continuously, or may flash error codes with no heat. Supplied as a complete kit, this OEM replacement restores correct sequencing and safety logic with the exact firmware and connector layout your furnace expects.

Specifications

Compatibility

Direct OEM replacement kit for the ICP Tempstar Heil RGS240LSFA0AAAA gas furnace. ICP control boards are model-specific — match the kit number 1183618 to your unit's parts list before installing, as connector pinouts and firmware vary across furnace families.

Installation Guide

1. Safety First — Disconnect power at the furnace and breaker, then verify zero voltage with a multimeter before touching the board.
2. Access — Remove the control compartment service panel.
3. Document — Photograph every harness connector and wire position on the existing board before unplugging.
4. Remove — Unplug each connector, release the board standoffs or screws, and lift the old board out.
5. Install — Mount the new board, transfer any jumpers or links from the kit instructions, and reseat each connector per your photo.
6. Test — Restore power and run a full heat cycle, confirming clean ignition, proper blower timing, and no fault codes.

Signs You Need a Replacement

• Furnace unresponsive to thermostat calls
• Persistent diagnostic fault codes or LED error flashes
• Short-cycling or blower that won't shut off
• Visible burn marks, corrosion, or blown components on the board

Shipping & Returns

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