ICP Furnace Control Board Kit for RGS150LTCA0AAAA — OEM 1183618 | Ships Today

Overview

This is the genuine OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS150LTCA0AAAA gas furnace. The integrated furnace control board is the brain of the furnace: it sequences ignition, energizes the igniter and gas valve, runs the inducer and blower motors, monitors the pressure switch, flame sensor, and limit safeties, and flashes diagnostic fault codes. When the board fails you can see no response to a heat call, blower or inducer that won't run, intermittent operation, erratic cycling, or blank/garbled fault codes. This kit restores reliable, code-correct furnace control.

Specifications

Compatibility

Fits the ICP-family RGS150LTCA0AAAA and the related RGS150 platform marketed as Tempstar, Heil, and Comfortmaker. Confirm OEM number 1183618 and the board's connector layout against your existing control before ordering.

Installation Guide

1. Safety First — Disconnect power to the furnace and verify zero voltage with a multimeter.
2. Access — Remove the blower/service panel to expose the control board.
3. Document — Photograph every plug and wire on the board before disconnecting — connector position is critical.
4. Remove — Unplug all harnesses, remove the mounting screws/standoffs, and lift out the old board.
5. Install — Mount the new board and reconnect each harness to the matching terminal exactly per your photo; set any DIP switches/jumpers to match the original.
6. Test — Restore power, call for heat, and verify the full ignition sequence, blower operation, and a clear status/fault code.

Signs You Need a Replacement

• No response to a heat call — igniter, inducer, and blower stay dead
• Blower or inducer that won't start or won't shut off
• Erratic cycling or intermittent operation
• Blank, frozen, or nonsensical diagnostic LED codes

Shipping & Returns

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