ICP Furnace Control Board for WFSR040A030A1 — OEM | Ships Today

Overview

This OEM ICP integrated furnace control board (part #1184783) is the brain of your WFSR040A030A1 system. It manages the entire heating sequence — energizing the inducer, the hot surface igniter, the gas valve, and the blower — while monitoring the pressure switch, flame sensor, and limit controls for safe operation. A failed control board can cause no-heat conditions, short cycling, a blower that won't shut off, or no response at all to the thermostat. Many boards include a diagnostic LED that flashes fault codes; an erratic flash pattern or a dark LED with power present points to a board failure. This genuine OEM replacement restores correct sequencing and safety logic to the unit.

Specifications

Compatibility

Directly fits ICP model WFSR040A030A1 and the matching Tempstar, Heil, and Comfortmaker furnaces built on this control platform. Confirm the OEM part number on your existing board matches 1184783 before installing.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching the board.
2. Access — Remove the furnace control-compartment service panel.
3. Document — Photograph every plug and wire connection on the board before disconnecting anything.
4. Remove — Unplug all harness connectors, remove the mounting screws, and lift out the old board.
5. Install — Mount the new board, then reconnect each connector exactly per your photo.
6. Test — Restore power, run a full heat cycle, and confirm the diagnostic LED shows normal operation.

Signs You Need a Replacement

• No response from the furnace on a call for heat
• Blower runs continuously or won't start
• Diagnostic LED is dark or flashing a hardware fault code
• Intermittent operation, short cycling, or random lockouts

Shipping & Returns

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