ICP Furnace Control Board Kit for RGS243SREA0AAAA — OEM Part 1183618 | Ships Today

Overview

This is the genuine OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS243SREA0AAAA gas furnace. The integrated furnace control board is the brain of the system — it manages the ignition sequence, blower and inducer timing, safety limit monitoring, and thermostat communication. When the board fails, the furnace may not respond to the thermostat, the blower or inducer may run erratically, the unit may lock out, or diagnostic LED codes may flash. This OEM kit includes the correct board for a reliable, direct replacement.

Specifications

Compatibility

Designed for the ICP / Tempstar / Heil RGS243SREA0AAAA gas furnace and other units originally equipped with control board kit 1183618. Match the part number on your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the furnace control/blower compartment panel.
3. Document — Photograph every wire harness and terminal connection on the old board before disconnecting.
4. Remove — Unplug the harnesses, then unfasten the failed board from its standoffs.
5. Install — Mount the new board and reconnect each harness exactly per your photo, confirming any DIP switch or jumper settings match.
6. Test — Restore power and run a full heat cycle, verifying ignition, blower, and inducer operation with no fault codes.

Signs You Need a Replacement

• Furnace doesn't respond to thermostat calls
• Blower or inducer runs continuously or won't start
• Repeated lockouts or flashing diagnostic LED fault codes
• No ignition sequence despite proper gas and power

Shipping & Returns

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